74results about How to "Realize reasonable recycling" patented technology

The invention provides an insect prevention biological fertilizer for honey pomelo, a method for preparing the insect prevention biological fertilizer and application thereof, and belongs to the field of agricultural planting. The insect prevention biological fertilizer comprises raw materials including, by weight, 50-60 parts of coconut shells, 10-15 parts of sawdust, 10-15 parts of corncobs, 20-25 parts of straw, 10-15 parts of bran, 5-10 parts of pomelo branches, 30-40 parts of chicken manure, 25-30 parts of pig manure, 150-200 parts of plant extracting agents and 0.08-0.12 part of complex microbial agents. The raw materials are fermented to obtain the insect prevention biological fertilizer. The invention further provides a method for applying the insect prevention biological fertilizer for the honey pomelo. The insect prevention biological fertilizer, the methods and the application have the advantages that a formula for the insect prevention biological fertilizer and the methods are combined with one another, and accordingly the survival rate of honey pomelo plants can be increased; diseases and insect pests further can be prevented, and the production cost can be saved; soil in planting lands further can be improved, the insect prevention biological fertilizer and the methods are environmentally friendly and are applicable to systematically planting the honey pomelo plants on a large scale.

The invention discloses a planting method for growing grass and breeding sheep cyclically in a hillside orchard. According to the method, naturally-growing crab grass and interplanted pasture in the orchard are used as substrate fodder for breeding the sheep, and sheep shed rubbish produced in sheep breeding is used as organic fertilizer for fruit trees after being subjected to harmless treatment. The method includes the specific steps that by using pasture-ryegrass which is interplanted in gaps of the orchard, 2-3 sheep are bred in each mu of orchard in a captive mode, and the ryegrass and the crab grass which are harvested in each mu of orchard are provided for the 2-3 sheep as the fodder; the sheep shed rubbish is subjected to harmless treatment after being collected and serves as the organic fertilizer which can be applied to the orchard. According to the method, in common hillside orchards in the Yangtze River delta region, by building sites for breeding sheep around the orchards and growing fine pasture in gaps between fruit trees to breed the sheep, the cyclic development mode of growing the grass and breeding the sheep in the orchards is realized, the technology of quantifiably allocating the different ecological niches of the fruit trees, the sheep and the pasture is achieved, and economic benefits, ecological benefits and social benefits are achieved at the same time.

The invention discloses a desulfurized flue gas dehumidification and water recovery system and method. The system comprises a dehumidifier, a heat exchanger, a flash evaporator and a steam compressor. A moisture absorption solution in the dehumidifier makes contact with desulfurized flue gas, water in the desulfurized flue gas is removed, and a dilute solution is obtained; the dilute solution flowing out of the dehumidifier enters the heat exchanger for heat exchange, and a high-temperature dilute solution is obtained; the high-temperature dilute solution flowing out of the heat exchanger enters the flash evaporator for flash evaporation, a regenerated moisture absorption solution and low-pressure steam are obtained, the moisture absorption solution enters the dehumidifier, the desulfurized flue gas is dehumidified, the low-pressure steam is compressed through the steam compressor and then enters the heat exchanger, and the dilute solution is heated. After the steam generated in the flash evaporation process is compressed to increase the boiling point, a heating heat source used as the dilute solution is condensed and subjected to heat release, heat needed by regeneration of the dilute solution does not need to be supplied by the exterior, and the energy consumption and operating cost of the desulfurized flue gas solution dehumidification system are reduced to the maximum degree.

The invention relates to a planting method for hylocereus undulatus Britt. and belongs to the field of agricultural planting. The method comprises the steps of selecting land suitable for planting hylocereus undulatus Britt., selecting hylocereus undulatus Britt. seedlings, and transplanting the seedlings to the land, the columnar cultivation technology being used for planting; applying fertilizer three times every year and applying fertilizer a prepared from homemade organic fertilizer, nitrogen fertilizer, and phosphate fertilizer or fertilizer b prepared from homemade organic fertilizer, phosphate fertilizer, potash fertilizer and magnesium fertilizer in different planting periods, wherein the homemade organic fertilizer is prepared from rotten hylocereus undulatus Britt. branches, straw, corncobs, bagasse, duck feces, sheep feces, and human excrement and urine according to a specific ratio; performing pinching and flower cutting timely, and cultivating the plants until the plants bear fruits. The planting method is simple in operation, can increase the survival rate and the growth rate of plants, reduces the production cost, is suitable for large-scale systematic breeding and is highly practical; obtained fruits are nutritious.

The invention discloses an LNG gasification system based on a double-heat-source heat pump. The LNG gasification system comprises an LNG gasification heating expansion main circuit, an expansion electricity generation unit, a double-heat-source heat pump unit and an automatic control unit. According to the LNG gasification system, the double-heat-source heat pump is introduced, solar energy and air energy serve as gasification system base load heat sources to supply needed heat for LNG gasification, and therefore efficient LNG gasification is achieved; LNG cold energy electricity generation is utilized for supplying energy for power utilization equipment like a compressor and a process pump in the system and supplying cold for an optimized cold energy user end outside the system in a cold air or chilled water or other modes, and therefore reasonable recycle of the LNG cold energy can be achieved flexibly; according to hourly gas requirements and hourly cold supply requirements of a typical design day of a natural gas user end and the optimized cold energy user, a cold storage tank, an inverter compressor, a standby heater and various flow regulation components are adopted, and the system can operate stably under different working conditions through multiple adjustments by a control system.

The invention relates to a planting method for citrus reiculata Blanco and belongs to the field of agricultural planting. The planting method specifically comprises the following steps that firstly, land suitable for planting citrus reiculata Blanco is selected, and citrus reiculata Blanco plants free of diseases are selected and transplanted into the land in the aspect ratio of (2.7-3)m:(3.8-3.9)m; thin fertilizer is frequently applied each year, and home-made compound fertilizer prepared from home-made organic fertilizer, phosphate fertilizer, potassium fertilizer and magnesium fertilizer is used for fertilizing every 2-3 months, wherein the home-made organic fertilizer is prepared from citrus reiculata Blanco decayed branches, rice straw, egg shells, orange peels, peanut hulls, sheep manure and human excreta in a specific proportion; prevention and treatment of plant diseases and pests are paid attention to, and cultivation is carried out until fruit bearing. The integral planting method is scientific and reasonable, the survival rate of citrus reiculata Blanco plants can be high, plant diseases and pests can be prevented, fertilizer can be saved, production cost can be reduced, the acre yield of crops can be increased, obtained fruits are rich in nutrition, and the planting method is suitable for large-scale systematic reproduction and high in practical operability.

The invention provides a red pulp honey pomelo seedling breeding method and belongs to the field of crop planting. The seedling breeding method comprises the steps of selecting a land suitable for redpulp honey pomelo growth to carry out preparation, adding a biological fertilizer fermented by 40-45 parts of banana stalk, 20-25 parts of peanut shell, 10-15 parts of pond sludge, 8-10 parts of vinasse dregs, 10-15 parts of fungi bag powder, 10-15 parts of human excreta, 35-40 parts of goat manure, 0.05-0.08 part of complex microbial inoculant and 12-15 parts of plant extract into a planting pit, transplanting rootstock seedlings which grow to 20-25cm into the planting pit, and finally, selecting red pulp honey pomelo scions free of plant diseases and insect pests to conduct grafting. The red pulp honey pomelo seedling breeding method can allow seedlings to grow to trees in advance, increase the survival rate of rootstocks and red pulp honey pomelo plants, improve disease-resistant performance, prevent plant diseases and insect pests and save production costs and is suitable for large-scale systematic planting.

The invention discloses an air energy soil-thermal storage heating and cooling device for fruit and vegetable plastic sheds or greenhouses in cold areas, and particularly relates to an air energy soil-thermal storage heating and cooling device which solves the problems of current heating energy waste of winter plastic sheds in the cold areas, failure in cooling in summer, high maintenance cost and disadvantages in planting. Vertical U-shaped ground heat exchangers are respectively communicated with a first by-pass pipe and a first circulating pump through communication of a low-temperature side water supply pipe, and the first by-pass pipe is communicated with a second circulating pump; the first circulating pump is communicated with a heat pump unit which is communicated with a low-temperature side return water pipe; the heat pump unit is communicated with the second circulating pump which is communicated with a fan coil; the fan coil is respectively communicated with a second by-pass pipe and a first valve, the second by-pass pipe is communicated with the low-temperature side return water pipe, and the first valve is communicated with the heat pump unit; and the low-temperature side return water pipe is communicated with the vertical U-shaped ground heat exchangers.

The invention provides a planting method for grapes and belongs to the field of agricultural planting. The method comprises the following steps: firstly, selecting the land suitable for the growth of grapes and constructing a rain shelter; before planting, ploughing in soil and applying a base fertilizer prepared from a self-made organic fertilizer, a phosphorus fertilizer and a calcium fertilizer, wherein the self-made organic fertilizer is prepared by mixing and fermenting grape vines, bean pulp, wheat bran cakes, peanut dregs, shaddock peel, fish bones, crab shells and chicken manure; while planting, covering a mulching film after planting with the planting water; applying different fertilizers in different growth periods of the grapes after planting, and periodically trimming, pinching and thinning spikes, thereby guaranteeing the reasonable growth of fruits; and paying attention to insect disease prevention and control, and cultivating till fruiting. According to the planting method provided by the invention, the survival rate of the grapes can be increased, the insect disease can be prevented and controlled, the fertilizers can be saved, the fruiting yield can be increased, and the planting cost can be lowered; the produced grapes are rich in nutrition and taste fragrant and sweet; and the planting method is suitable for large-scale symmetric planting and is favorable for increasing the yield and income of farmer households.

The invention discloses a recycling method of 1-phenyl-5-hydroxytetrazole, and belongs to the technical field of medicinal chemistry. The preparation method comprises the following steps: a byproduct1-phenyl-5-hydroxytetrazole generated in preparation process of a rosuvastatin calcium intermediate is converted into 1-phenyl-5-mercaptotetrazole; and meanwhile, the 1-phenyl-5-mercaptotetrazole is further used for preparing a rosuvastatin calcium intermediate or rosuvastatin calcium. According to the method disclosed by the invention, reasonable recycling of the byproduct 1-phenyl-5-hydroxytetrazole is realized, the raw materials are fully utilized, the production cost of rosuvastatin calcium and the intermediate thereof is reduced, and the emission of three wastes is reduced.

The invention provides a disease prevention plantation method for navel orange and belongs to the field of agricultural planting. The method comprises following steps: selecting soil which is suitable for the growth of navel orange and performing land preparing; selecting proper navel orange scion, stocks and interstock for grafting; after survival, regularly applying base fertilizer prepared from self-made organic fertilizer, nitrogenous fertilizer, phosphate fertilizer and potash fertilizer, wherein the self-made organic fertilizer is prepared from mixing and fermenting Chinese milk vetch, rice bran, tea seed cake, bean dregs, blue algae, marigold, derris, zeolite powder, chicken manure and decay accelerator; field management is carried out until fruit harvesting. The plantation method of the invention can increase the survival rate of navel orange grafting and the quality of products, save planting fertilizer and prevent disease and increase output; the method is suitable for large scale systematic plantation and can increase output and income for farmers.

The invention provides a plantation method for navel orange and belongs to the field of agricultural planting. The method comprises following steps: selecting soil which is suitable for the growth of navel orange and performing land preparing; selecting suitable navel orange seedlings and transplanting the seedlings to the field and then watering for field planting; before field planting, applying base fertilizer prepared from self-made organic fertilizer, nitrogenous fertilizer, phosphate fertilizer and potash fertilizer to planting pits, wherein self-made organic fertilizer is prepared by mixing and fermenting alfalfa, cassava residue, cottonseed cake, straws, water hyacinth, snowpoppy, tobacco leaf rod, pond mud, pig manure and decay accelerator; reasonably applying fertilizer according to the age of young trees; performing field management until fruit harvesting. The plantation method of the invention can increase the fruit set percentage, save fertilizer, increase output and prevent disease and increase nutrition value of the products; the method is suitable for large scale systematic plantation and can increase output and income for farmers.

The invention provides an enhanced composite insulator umbrella skirt sheath, which consists of the following ingredients in parts by mass: 95 to 105 parts of methyl vinyl silicone rubber, 4 to 6 parts of ferric oxide, 4 to 6 parts of hydroxy silicone oil, 1.5 to 2.5 parts of sulfurizing agents, 58 to 77 parts of ceramic powder, 62 to 83 parts of aluminum hydroxide and 1 to 3 parts of coloring agents. The ceramic powder is proportionally added in the umbrella skirt sheath, and the ceramic powder is obtained through crushing the recovered waste and abandoned ceramic insulator ceramic bodies and processing the recovered waste and abandoned ceramic insulator ceramic bodies into powder. The ceramic powder is added into the umbrella skirt sheath to be used as reinforcing agents for totally replacing white carbon black and partially replacing aluminum hydroxide, and the mechanical intensity and the electric performance of the silicon rubber can be improved. The waste and abandoned ceramic insulator ceramic bodies are effectively utilized to be used as raw materials for producing the umbrella skirt sheath, the reasonable cyclic utilization of the resources are realized, and good economic benefits and environment benefits are realized.

The present invention relates to a rose organic compound fertilizer and a manufacturing method thereof and belongs to the field of fertilizers for flowers. The organic compound fertilizer comprises the following raw materials in parts by weight: 20-25 parts of rose rotten branches, 15-20 parts of plant ash, 25-30 parts of straws, 15-20 parts of sesame residues, 10-15 parts of animal bone powders, 10-20 parts of shell, 12-18 parts of cow dung, 0.2-0.5 part of urea, 0.15-0.3 part of calcium superphosphate, 0.2-0.3 part of magnesium sulfate, 0.1-0.3 part of potassium sulfate and 0.005-0.01 part of decay accelerating agent. According to the invention, the rose organic compound fertilizer can improve the utilization rate of fertilizers and reduce the planting cost. Meanwhile, the rose organic compound fertilizer can improve the acre yield of roses and prevent the occurrence of diseases and insect pests. Obtained roses are good in quality. Therefore, the rose organic compound fertilizer is suitable for large-scale planting.

The invention provides a cultivation method of selenium-rich kumquats and belongs to the field of agricultural planting. The cultivation method specifically includes: firstly, selecting the land fit for growth of the kumquats for soil preparation; selecting suitable kumquat seedlings for planting and applying base fertilizer prepared from self-made organic fertilizer, phosphate fertilizer and potash fertilizer in planting pits before planting, wherein the self-made organic fertilizer is prepared from mixed fermentation of kumquat rotten branches, red-pine rotten branches, peanut meal, pineapple leaves, spartina alterniflora loisel, sweet photo vines, charcoal dust, pomegranate bark, pig manure and a rush corrosion inhibitor; irrigating planting water after the seedlings are transplanted to the land; performing reasonable field management till harvest of fruit. With the cultivation method, percentage of fertile fruit of the kumquats can be increased, the fertilizer is saved, the yield is increased, selenium content in the fruit is increased, nutrition value of the products is increased, and the method is suitable for large-scale systematic planting and can increasing the yield and income of farmers.

The invention provides a gardening cultivation method of passion fruits, which belongs to the technical field of agricultural planting. The cultivation method comprises the following steps: selectingmature passion fruits with no disease or pest as seeds; transplanting seedlings after germination and seedling of the seeds; putting up a passion fruit climbing frame on a road before transplantation,excavating a planting pit; putting a homemade base fertilizer into the planting pit, wherein the homemade base fertilizer is formed by fermenting passion fruit vines, watermelon vines, tomato seedlings, banana stalks, humus soil, furfural residues, human wastes, chicken manure, a decomposition catalyst and a plant extractant; applying the fertilizer and trimming after transplantation, so as to complete gardening cultivation of the passion fruits. According to the gardening cultivation method provided by the invention, the survival rate and the yield of the passion fruits are improved, the cost is reduced, and the diseases are prevented; in addition, a comfortable corridor environment is provided by cultivating the passion fruits along the road; therefore, the method is applicable to large-scale systematic cultivation promotion, and a scenery line can be provided for an agricultural planting base.

The invention relates to a rose planting method, and belongs to the field of flower planting. The method comprises the following steps: selecting a land suitable for planting roses, building a greenhouse, applying a self-made base fertilizer which is prepared by organic fertilizer, phosphatic fertilizer and magnesium fertilizer to the land and arranging furrows, transplanting the rose plants; using a self-made composite organic fertilizer prepared from the self-made organic fertilizer, the phosphate fertilizer, a potash fertilizer and the magnesium fertilizer in winter every year; frequently applying a thin fertilizer in the daily time, spraying a nutrient solution which is prepared by the self-made organic fertilizer, the phosphate fertilizer and the potash fertilizer at a certain time interval, wherein the self-made organic fertilizer is prepared by fermenting rose rot branches, soybean meal, peanut residue, pomelo peel, fish bone, crab shell and human excrement and urine according to specific proportion; finally performing pruning and pest killing. According to the overall planting method provided by the invention, the survival rate of the rose plants is high, diseases and insect pests can be prevented, the fertilizer is saved, the production cost is reduced, the yield of crops per mu is increased, the quality of the obtained roses is good, and the method is suitable for large-scale system reproduction and strong in actual operability.

The present invention relates to a method for preparing silicon nitride by using recovery purification silicon wafer sawdust powder. The method is characterized by comprising the following steps: 1) adding silicon wafer sawdust powder to a container, introducing a protection gas, carrying out first heating under the protection of the protection gas, and carrying out a first thermal insulation treatment to obtain a powder A; 2) carrying out second heating on the powder A under the protection of the protection gas, carrying out a second thermal insulation treatment, and cooling to a room temperature to obtain a powder B, wherein the powder A is maintained to continuously rotate during the thermal insulation process; and 3) carrying out third heating on the powder B under the protection of the protection gas, carrying out a third thermal insulation treatment, and cooling to a room temperature to obtain the silicon nitride. With the method of the present invention, reasonable recovery utilization of a large amount of silicon wafer sawdust produced by photovoltaic industry can be achieved so as to reduce solar photovoltaic power generation cost.

The invention discloses a lactide continuous melt crystallization purification system and method. The system comprises a mixed feeding system, a crude lactide crystallization section, a crystal sweating purification section and a mother liquor crystallization recovery section. The mixed feeding system is connected with the crude lactide crystallization section through a pumping pipeline. A crystal mush outlet is formed in the bottom of the crude lactide crystallization section and is connected with the crystal sweating purification section, and the top of the crude lactide crystallization section is provided with a mother liquor outlet connected with the mother liquor crystallization recovery section. A product outlet and a backflow liquid inlet are formed in the bottom of the crystal sweating purification section, and a mother liquor outlet is formed in the top of the crystal sweating purification section and is connected with the crude lactide crystallization section. A crystal slurry outlet is formed in the bottom of the mother liquor crystallization recovery section and connected with a solid-liquid separation system, and a solid phase outlet is connected with a mixed feeding system. A circulating branch is arranged at a liquid phase outlet and returns to the mother liquor crystallization recovery section. By adopting the system and the method disclosed by the invention, efficient separation and purification of the crude lactide can be realized, and the system has the advantages of high product purity, low system energy consumption, high yield, continuous and stable operation and the like.

The invention provides a method for planting citrus in alkaline soil, and belongs to the field of citrus plantation. 300-400 kg / mu of a base fertilizer is applied to soil before plantation, the soil is plowed to achieve uniform mixing of the base fertilizer and the soil, and the soil is leveled and stands for 7-10 d for later plantation. The base fertilizer is obtained by fermenting the followingraw materials, by weight, 80-100 parts of farm manure, 35-40 parts of vermiculite powder, 2-4 parts of trace elements and 1-2 parts of a microbial agent; and the trace elements comprise, weight, 3-5 parts of EDTA-Fe, 10-15 parts of potassium dihydrogen phosphate, 5-8 parts of magnesium sulfate, 3-4 parts of calcium sulfate and 1-2 parts of sodium borate. The method for planting citrus in alkalinesoil can improve soil hardening, adjust the pH value of the soil and reduce heavy metal pollution in the soil in order to improve the soil fertility, is suitable for large-scale systematic application, and can increase the yield and the income of peasant households.

The invention provides a method for collecting surplus heat of iron alloy pouring, which can not only effectively cool alloy pouring ingot (temperature range: 1250-200 DEG C), but also can furthest recover heat energy in the alloy pouring ingot, and obtain better dust-removing effect, therefore, the invention also provides a special device of the method for collecting the surplus heat of the iron alloy pouring. The method is characterized in that heat energy in the alloy pouring ingot is directly sent into a heat pipe steam generator through an insulating flue by using a high-temperature resisting catching cover, the heat pipe steam generator realizes heat exchange and produces steam, and smoke out of the heat pipe steam generator is discharged into air after dust is removed by a dust remover. The special device comprises a smoke catcher which is connected with the heat pipe steam generator, and the heat source output end of the heat pipe steam generator is connected with the dust remover.

The invention relates to a method for planting Hongyang kiwis, and belongs to the field of agricultural planting. The method particularly comprises the following specific steps: firstly, selecting a field for planting the Hongyang kiwis, selecting seedlings as rootstocks and transplanting the seedlings to the field, and planting in an aspect ratio of (1.7-2.0)m:(2.5-3.0)m; sowing wild Hongyang kiwi seeds to obtain seedlings, taking branches of the seedlings as scions, and grafting the scions onto the rootstocks; apply a self-made compound fertilizer once every 4 months in each year, wherein the self-made compound fertilizer is prepared from an organic fertilizer, a phosphate fertilizer and a potassium fertilizer by fermenting rotten kiwi branches, rice straw, bagasse, soybean meal, animal bone meal, cow dung and pig manure according to specific proportions; paying attention to control of pests and diseases, and culturing until fruiting. The overall planting method provided by the invention is scientific and reasonable; by the method, the survival rate of Hongyang kiwi plants is high, the pests and the diseases can be controlled, the fertilizer is saved, the production cost is reduced, the crop yield per mu (a Chinese area unit) is increased, and obtained fruits are rich in nutrition; the method is applicable to large-scale systematic propagation; the actual operability is strong.

The invention relates to a plantation method of dragon fruits and belongs to the field of agricultural plantation. The method comprises the following steps: first of all, selecting a land suitable for planting the dragon fruits, selecting dragon fruit seedlings, transplanting the seedlings to a field, and planting the seedlings by use of a columnar cultivation technology; fertilizing three times a year respectively by use of a fertilizer a prepared by a self-made organic fertilizer, a nitrogen fertilizer and a phosphate fertilizer and a fertilizer b prepared by the self-made organic fertilizer, the phosphate fertilizer, a potash fertilizer and a magnesium fertilizer in different plantation periods, wherein the self-made organic fertilizer is prepared by a dragon fruit decayed branches, pineapple leaves, coconut shells, lichee shells, pig manure, chicken manure and night soil according to specific proportions; and performing pinching and flower trimming timely, and cultivating until fruits are grown. The plantation method of the dragon fruits is simple to operate and can improve the survival rate of plants. The growth speed is fast, the production cost is low, nutrition of obtained fruits is rich, the method is suitable for large-scale symmetric breeding, and the practicality is high.

The present invention provides a method for adjusting performance of soil in a citrus orchard, and belongs to the field of citrus plantation. The method comprises the steps of spreading a nutrition material of 500-700 kg per mu to the soil and plowing and stirring the soil uniformly, and after 5-7 days, adding a soil conditioner of 20-30 kg per mu to the soil and plowing and stirring the soil uniformly; wherein the nutrition material is composed of raw materials including, by weight, 30-40 parts of brown coal powder, 80-90 parts of modified bentonite, 20-25 parts of EDTA-Fe, 12-15 parts of EDTA-Mg, and 400-500 parts of traditional Chinese medicine slag. According to the method, the harden soil can be improved, the soil pH value is can be adjusted, heavy metal pollution in the soil can be reduced, and therefore the soil fertilizer can be increased. The method is suitable for large-scale systematic application to increase production and income for farmers.

The invention provides a high-yield rice planting method and belongs to the field of agricultural planting. The high-yield rice planting method specifically comprises the following steps that land suitable for rice growth is firstly selected and prepared, and a base fertilizer prepared from a home-made organic fertilizer, a phosphate fertilizer and a potash fertilizer is applied to soil, wherein the home-made organic fertilizer is prepared by mixing and fermenting banana stems, passion fruit shells, green algae, shiitake mushroom residues, bagasse, peanut bran, eucalyptus leaves, chicken manure, pig manure and a composting catalyst; soaked seeds are put in seedling raising fields for seedling raising, seedlings are transplanted to the land after 20-24 days, and fertilization and management are regulated and controlled in different periods of rice growth after transplantation till harvesting is completed. By adopting the high-yield rice planting method, the survival rate of rice can be improved, fertilizers can be saved, the yield can be increased, the nutrition value of products can be improved, the yield and incomes can be increased for farmers, and the high-yield rice planting method is suitable for large-scale systematic planting.

The invention provides a sagittaria sagittifolia planting method and belongs to the field of agriculture planting. The method specifically comprises the following steps that a terminal bud with a strong and complete corm is selected for seedling, field planting is performed after the terminal bud grows to 20-25 cm, before field planting, a base fertilizer which is prepared from a self-prepared organic fertilizer, a phosphatic fertilizer and a potassic fertilizer is applied in a planting field, wherein the self-prepared organic fertilizer is prepared through mixed fermentation of wheat straw, sagittaria sagittifolia blades, peanut bran, furfural residue, beanstalk, sheep manure, a broad bean root extract, a blue-green algae extract and an additive; reasonable field management is performed after field planting until harvesting. According to the planting method, the survival rate of the sagittaria sagittifolia seedlings can be improved, disease can be prevented, the yield and the corm nutritive value are improved, the fertilizer is saved, the sagittaria sagittifolia is suitable for large-scale systematized planting, and both production and income of a grower can be increased.

The invention provides a cultivation method of seedless watermelons and belongs to the field of agricultural planting. The cultivation method specifically comprises the following steps: firstly, selecting and preparing soil suitable for seedless watermelons to grow, and applying a base fertilizer prepared from a self-made organic fertilizer, a phosphorus fertilizer and a potassium fertilizer to the soil, wherein the self-made organic fertilizer is prepared by carrying out mixed fermentation on cucumber stems, straws, mushroom residues, watermelon vines, cassava wastes, orange peels, pig manure, pond sludge, faecal matters and a corrosion catalyst; then, placing the treated seedless watermelon seeds into a seedling raising tray for raising seedlings; next, transplanting the seedlings to a field, and watering for field planting; and carrying out reasonable management until harvesting. The invention provides the cultivation method of the seedless watermelons. By using the method, the survival rate and taste quality of the seedless watermelons can be improved, resources can be saved, artificial consumption can be reduced, furthermore, the nutrient value of a product is increased, and therefore, the cultivation method is suitable for large-scale systematized plantation and capable of increasing the production and income of growers.

The invention provides a method for planting navel oranges, and belongs to the field of agricultural plantation. The method specifically comprises the following steps: firstly selecting a land suitable for the growth of the navel oranges for soil preparation, selecting proper navel orange seedlings for planting, applying a base fertilizer prepared from a homemade organic fertilizer, a phosphatic fertilizer and a potash fertilizer in planting cavities prior to planting, wherein the homemade organic fertilizer is prepared from mixed fermentation of rotted branches of navel oranges, rotted branches of Japan cypress, bean pulp, sugarcane tops, cornstalks, banana skin, animal bone powder, commeline communis, pig manure and a decay promoter; transplanting the navel orange seedlings in a land, and irrigating planting water; and performing reasonable field management until fruits are harvested. By virtue of the planting method provided by the invention, the percentage of fertile fruits of the navel oranges can be improved, the fertilizers are saved, the yield is improved, diseases are prevented, the nutritive values of the products are improved, the planting method is suitable for large-scale planting, and the yield and the incomings of growers can be improved.

The invention relates to an energy recovery method of an electric vehicle, in particular to a downhill energy recovery control method and system for a pure electric mining truck, and aims to solve thetechnical problem that an existing energy recovery method for the pure electric mining truck cannot meet the energy recovery requirement under the condition that the gradient is 15%-50%. The method comprises the steps of collecting whole vehicle information in real time; calculating the vehicle speed, the transmission target gear, the motor braking torque and the recyclable electric quantity under the current slope; judging whether the recyclable electric quantity is smaller than the rechargeable electric quantity of the battery; judging whether the motor braking torque meets the current gearbraking torque requirement of the transmission; determining to start an n-th-gear retarder; judging whether the residual electric quantity of the battery reaches the charging upper limit of the battery; judging whether the current gradient is smaller than a gradient set value; the invention further provides an energy recovery system for realizing the method. The energy recovery system comprises atransmission, a retarder, a whole vehicle mechanical brake, a motor, a motor controller, a battery and a whole vehicle controller.

The invention relates to a method of planting Dendrobium officinale and belongs to the field of agricultural planting. The method comprises the steps of first, selecting a Dendrobium officinale planting land, building a greenhouse, transplanting tissue culture seedlings of Dendrobium officinale to a culture medium made by mixing self-made organic fertilizer, fine river sand, limestone, brick rubble, tree bark, wood chips, rice straw, mushroom residue and sawdust, wherein the self-made organic fertilizer is made by fermenting cotton seed cake, soybean meal, river mud, chicken manure and duck manure at a specific ratio; paying attention to field managements, including irrigation, applying nutrient solution and pesticides, and harvesting after 3 years of cultivation. The overall planting method provided herein is scientific and reasonable, provides high survival rate of Dendrobium officinale plants, can also prevent disease and pest damage, save fertilizers, reduce production cost and increase the survival rate of Dendrobium officinale, enables high property of Dendrobium officinale, and is suitable for large-scale systematic reproduction and is high in practical operability.