105results about How to "Improve seedling retention rate" patented technology

The invention discloses a planting method for regulating and controlling continuous cropping obstacles of atractylides macrocephala koidz, which comprising the following steps of: applying 40 to 100g of lime nitrogen to each square meter of a continuous cropping field, performing deep tillage, watering soil by using 500 to 1,000 times of prochloraz or fluazinam, covering by using a thin film for 15 to 20 days, uncovering the thin film, ventilating for 10 to 15 days, and planting the atractylides macrocephala koidz and applying 0.5 to 3.5kg of biological organic fertilizer per 5 square meters; and irrigating the root of the atractylides macrocephala koidz once by using 500 to 1,000 times of the prochloraz or the fluazinam or hymexazol before disease outbreak in June and July; or the planting method comprises the following steps of: ploughing and covering the thin film after the crop rotation of spring corn, irrigating until water is above the soil surface, keeping hermetic for 20 to 90 days, and uncovering the thin film to plant the atractylides macrocephala koidz. By the planting method, the incidence rate of diseases such as root rot, southern blight and the like of the atractylides macrocephala koidz is reduced greatly, the seedling survival rate of the atractylides macrocephala koidz is improved, and the yield of atractylides macrocephala koidz rhizomes is improved. Simultaneously, the utilization rate of land can be improved to improve economic benefits.

The invention provides a high-yield planting method for soybean, relating to the planting methods of crops and solving the problems that seeds are wasted due to the high density of seedling strains, and the flowers of the soybean fall in a flowering stage and the pods of the soybean fall in a podding stage because the soybeans are subjected to the deficiencies of moisture, nutrients and light in both a seedling stage and a growing stage, which directly results in the low yield of the soybean. The high-yield planting method provided by the invention comprises the following steps of: (1) selecting a relatively-flat land plot suitable for the crop rotation of main crops; (2) carrying out soil and ridge digging in autumn, breaking a plough sole by digging in autumn so as to deepen a plough layer year by year; (3) selecting soybean seeds; (4) carrying out seed dressing by using a boron and molybdenum trace fertilizer and soybean rhizobia; (5) sowing and fertilizing, wherein the spacing among strains is 13-21 cm, and the strains of once-sown fully-standing seedlings per mou are 5,000-6,000; and (6) carrying out intertillage for 2-3 times, and spraying a mixed solution of a soybean accelerating and controlling agent and EM (Erythromycin) original dew in an initial bloom stage per mou. The high-yield planting method for the soybean has the advantages that: the soybean can have abundant of moisture, nutrients and light in both the seedling stage and the growing stage by adopting the spacing among strains of 13-21 cm, the flowers and the pods of the soybean do not fall, therefore, the yield of the soybean is increased, the ratio of fully-standing seedlings is high, and the seeds are saved.

The invention belongs to the technical field of crop planting and cultivation in specific soil, and provides a planting method for quinoa in an inland soda saline-alkaline land to solve problems likelow seedling emergence rate, susceptibility to saline-alkaline stress in a seedling stage and field waterlogging for quinoa planting in a soda saline-alkaline land. The planting method comprises the following steps: with a desalting agent as a core, and by cooperation with agricultural process and chemical measures, constructing a drainage ditch; carrying out soil preparation in autumn; carrying out soil treatment before sowing in spring, and carrying out deep plowing and shallow rotary tillage; soaking seeds with the desalting agent before sowing; and spraying a biological agent in the seedling stage so as to protect seedlings. According to the invention, chemical improvement measures are adopted to neutralize salt and alkali, and irrigation is performed to wash salt, so the damage degreeof salt and alkali to the quinoa is reduced; fine tillage is performed for soil before sowing, and the depth of sowing is controlled, so germination of small-grained quinoa seeds is promoted; biological improvement measures are adopted for soaking and coating of quinoa seeds before sowing, and the biological agent is sprayed in the seedling stage, so the saline-alkali resistance of seeds and seedlings is improved, and the purpose of improving the seedling emergence rate and the seedling protection rate is achieved; and simple operation and significant effects are achieved. The planting methodprovided by the invention has a certain promotion action to planting popularization of the quinoa in the soda saline-alkali land.

The invention relates to a method for cultivation of seedlings of bulbus fritillariae cirrhosae through devices. The method comprises the step of the site selection process, the step of greenhouse building key point process, the step of the seed after-ripening processing process, the seedling management process and the like. The method is characterized in that greenhouse cultivation is carried out on the seedlings of the bulbus fritillariae cirrhosae with the age ranging from one year to three years, the optimum temperature, the optimum humidity, the optimum overshadowing degree and the best fertilizer and water conditions required by growth of the seedlings are provided for the seedlings, and the rate of emergence of seeds and the bulblet seedling survival rate of the seeds namely the overyear bulblet survival rate are increased, so that a large number of seedlings of the bulbus fritillariae cirrhosae are produced, and the foundation is laid for achieving artificial cultivation industrialization of bulbus fritillariae cirrhosae commodity medicinal materials.

The invention relates to a sexual propagation and cultivation method for Unibract fritillary Bulb, which adopts seedling culture tray type or seedling culture bag type method. The seeding can be carried out in autumn or in spring, the methods such as reasonable close planting, seedling culture tray or seedling culture bag type method, centralized multilayer stack are adopted to realize the rapid and high efficient propagation of the Unibract fritillary Bulb in seedling stage. The method can greatly reduce the management cost of the Unibract fritillary Bulb in seedling stage, effectively control the propagation and harm of diseases, insects, weeds and rats to the Unibract fritillary Bulb in seedling stage, improves germination rate of the seeds and the survival rate of seedlings and reduces workload of digging; compared with general digging process, the method can not cause injury or loss to bulbs of the Unibract fritillary Bulb, thereby obviously improving the sexual propagation coefficient and economic efficiency of the Unibract fritillary Bulb, obviously improving land use rate; therefore, the method is a practical technique.

The invention relates to a stubble-leaving ridge side planting method pertaining to a technical field of corn planting and cultivation. A stubble of 5-15cm is left in even ridges of the existing tillage method after corn harvest, and seeds are sowed at a side of the ridge containing the stubble in the next year. One plough is shallowly processed on the side of a stubble belt of the last year, and then base fertilizer is applied. The seeds in precision quantity are manually sowed by using a disseminator and then grain fertilizer is applied. Soil is covered on the seeds and compacted to conserve soil moisture. The stubble-leaving ridge side planting method for corn of the invention realizes safely returning of straws, little move of soil, soil moisture conservation and seedling protection. Combined with dressing, subsoiling is used for breaking plough pans to create soil reservoir of plough layers, improve the use efficiency of natural rainfall, realize natural decay and returning of high stubbles, increase soil organic matters and cultivate fertility, thus ensuring the sustainable use of land resource.

The invention belongs to the field of crop planting, in particular to a high-efficiency corn cultivation method in saline-alkali land. The high-efficiency corn cultivation method in the saline-alkaliland includes the following specific cultivation steps: soil improvement, flat land preparation and application of base fertilizer, corn sowing and film covering, irrigation and fertilization. The method achieves the aim of improving corn emergence rate, seedling preservation rate, water and fertilizer utilization efficiency and further improving corn yield by improving the corn planting method and optimizing the irrigation and fertilization system, breaks through the technical bottleneck of difficult corn planting and improvement in saline-alkali land in low-lying areas, and can play a technical supporting role in efficient improvement and utilization of saline-alkali land and improvement of ecological environment. On the one hand, ridge film furrow planting can effectively reduce the evaporation and consumption of soil moisture, and thus water collection and moisture preservation are favorable, so that crop yield and water use efficiency are improved; on the other hand, the utilization of groundwater can be further promoted, the groundwater level is lowered, and the phenomenon of soil salinization is reduced.

The invention discloses a disease-resistant and insect-resistant organic vegetable planting medium. The disease-resistant and insect-resistant organic vegetable planting medium comprises, by weight, 40-45% of decaying medium, 4-6% of thermal insulation material, 5-7% of vermiculite, 40-45% of bio-organic fertilizer, 1-2% of sandy soil, 0.1-0.3% of biological bactericide, 0.1-0.3% of biological insecticide and 1-2% of inorganic compound fertilizer. The disease-resistant and insect-resistant organic vegetable planting medium prepared from the materials in proportion is high in drought resistanceand water retention, the organic fertilizer controlled release property is high, the medium contains sufficient organic matter and mineral substances and has no pollution to the environment, and green and healthy vegetables which are good in quality and free of disease can be cultivated.

A saline soil improver is characterized by comprising 25%-35wt% of vegetable soil, 5%-10wt% of active functional bacteria, 5%-15wt% of mineral powder, 25%-30wt% of an organic fertilizer, 15%-20wt% of an inorganic compound fertilizer and balance of water, the active functional bacteria includes lactic acid bacteria, bacillus subtilis, bacillus megatherium, trichoderma, aspergillus niger, Monascus, Trichoderma harzianum, Aspergillus aculeatus and yeast, the mineral powder is one of or a mixture of more than one of peat, zeolite, vermiculite, montmorillonite, calcium carbonate and expansion perlite, the mineral powder fineness is less than or equal to 200 meshes. The organic fertilizer contains composted manure, a rapeseed cake fertilizer and straws, and the weight ratio of composted manure to rapeseed cake fertilizer to straws is 5.5-7.5: 2.5-3.5: 0.5-1.5.

The invention provides a radix notoginseng continuous cropping soil flame treatment method which comprises the following steps: (1) performing incineration pretreatment; (2) performing incineration treatment; and (3) planting. The radix notoginseng continuous cropping soil flame treatment method has the beneficial effects that a physical method for incinerating the radix notoginseng continuous cropping soil by high-temperature flame is utilized, so pathogenic microorganism fungi, underground pests and weed in the radix notoginseng continuous cropping soil can be effectively killed, any residues do not exist, the time is short, the structure and the physicochemical properties of the soil are not influenced, and the treated soil has small and uniform granularity; and the seedling emergence rate and the seedling survival rate of radix notoginseng seedlings in the continuous cropping soil can be effectively increased, and the growth state of the radix notoginseng plants can be effectively enhanced.

The invention discloses a growth-promoting bacteria combination for enhancing salt tolerance of crops in moderate-severe saline and alkaline lands. The growth-promoting bacteria combination comprises a bacillus amyloliquefaciens strain ZCM18 and a bacillus tequilensis strain. Preservation numbers of the two strains are CGMCC No.1295 and CGMCC No.12960 respectively. The two strains are capable of tolerate the salinity of 5%, have high capabilities of phosphate solving, nitrogen fixing and producing IAA (indoleacetic acid), ACCD (acetyl-CoA carboxylase subunit D), siderophore and cytokinin, and can antagonize root pathogenic bacteria including fusarium, rhizoctonia, pythium and the like. The two stains after being combined are suitable for the moderate-severe saline and alkaline lands (with salt content ranging from 0.4% to 1.0%), and in the production field of biological fertilizer for salt tolerating and growth benefiting for the crops, the growth-promoting bacteria combination is promising in prospects of crop's salt tolerance enhancement, crop root growth benefiting, seedling existing rate increasing, fertilizer using amount decreasing and crop yield increasing.

The invention discloses an oilseed rape blanket-shaped nursery special matrix and its preparation method. The matrix comprises mushroom residue treated by fermentation and decomposition, acid-sludge,manioc waste mixed fermenting material and coco coir, carbon bran, plant ash and turf, vermiculite, and perlite. The matrix is prepared from, by volume, 20-30 parts of fermenting material, 10-20 partsof coco coir, 5-10 parts of turf, 5-10 parts of vermiculite, 5-10 parts of perlite, and 3-5 parts of carbon bran or plant ash. Besides, the matrix is further added with 0.3-0.5% by total weight of composite fertilizer and 0.1-0.3% of synergist. The preparation method of the matrix includes raw material selection and processing, material fermentation, matching and mixing, fertilizer blending, testing and adjustment of physicochemical indexes, quantitative packing, and other steps. The matrix is high in nutrition content, stable in structure, good in blanket forming effect and has a certain fiber; the matrix is very suitable for cultivate oilseed rape blanket-shaped nursery; compared with seedbed soil nursery, the seed nursery rate is improved by about 10%; after sprouting, the surviving rate is improved by about 15%; the tidiness of the height of seedling is improved by 15-20%' the difference of the average tidiness of 10 disks of seedlings is reduced by 15-20%.

The invention belongs to the technical field of soil repairing agents and particularly relates to a secondary saline soil repairing agent and a production method thereof. The technical scheme is as follows: the secondary saline soil repairing agent consists of the following components in parts by weight: lignite and / or weathered coal, a microorganism agent, an activating agent, dry chicken manure, inorganic nutrients and middle-trace elements. The production method of the secondary saline soil repairing agent comprises the following steps: crushing, mixing, stirring, activating, pelleting, drying, cooling and sieving the raw materials so as to obtain the black brown powdery substance or particle. By using the secondary saline soil repairing agent, the content of saline and alkaline in the soil is greatly reduced, the granular structure of the soil is enhanced, and the physical and chemical properties of the soil are fundamentally improved; and after water is added in the secondary saline soil repairing agent for dilution, the time of irrigating and improving the soil along with water is short, water is saved, the investment is less, and return is quick.

The invention belongs to the technical field of biological bacterial fertilizer, and particularly relates to a compound microbial agent. The compound microbial agent is prepared from five soil beneficial bacteria and three synergists, wherein bacillus licheniformis (TMQD01), bacillus megatherium (TMQJ05), silicate bacterium (TMQJ01), rhodopseudomonas palustris (TMQZ08) and lactobacillus cased (TMQR01) are mixed according to the effective viable counts being (0.8-1):(0.8-1):(2.5-3):(1.0-1.2):4, and it is ensured that the viable count is not smaller than 3 billion / ml; organic acid, water solubleamino acid, gamma-polyglutamic acid and other synergists, solid phosphorus and potassium in soil are dissolved, available phosphorus and potassium in soil are increased, the purpose of dissolving phosphorus and potassium is achieved, the photosynthetic effect rate is increased, plant fructification is promoted, crop disease resistance is improved, and the effect of reducing agricultural capital input is achieved.

The invention discloses a special medium for blanket seedling cultivation of rape. The medium is prepared from, by volume, 20-30 parts of composted fermented materials of mushroom residues, vinegar residues and cassava residues, 10-20 parts of coco coir, 5-10 parts of turf, 5-10 parts of vermiculite, 5-10 parts of perlite, 3-5 parts of carbon bran or plant ash, wherein 0.3-0.5wt% of compound fertilizers and 0.1-0.3wt% of synergists are added. The special medium with certain fibers is high in nutrient content, stable in structure, great in blanketing effect and quite suitable for blanket rape seedling cultivation. Compared with seedbed soil seedling cultivation, the special medium has advantages that the seed emergence rate can be increased by about 10%, the after-emergence 7-day seedling survival rate is increased by about 15%, seedling height uniformity is improved by 15-20%, and the average seedling uniformity difference of 10 trays is reduced by 15-20%.

The invention provides a dry culture seedling method of paddy rice in saline-alkali soil. The dry culture seedling method is characterized by dryly seeding treated paddy rice seeds into the saline-alkali soil not performed field steeping and salt spraying. The method comprises the following stages: a seed soaking stage, a seed sunning stage, a rotary harrowing and field sunning stage, a dry seeding and seed sunning stage, a salt spraying and sprouting stage, a drying and seedling germinating stage, a continuous irrigating stage, an irrigating stage before seedling emergency and the irrigatingstage after the seedling emergency. The method provided by the invention makes use of water used for washing the salt and the alkali and the time used for washing the salt, the alkali and the water in the whole land to sprout and germinate the seeds absorbed with the water. With the adoption of the method, continuous irrigation is adopted after the seedling emergency and before the expansion of afirst leaf of the seedling, or continuous seedling-flooded irrigation is adopted or a shallow water layer is started to establish, so that the whole salt content in the soil is further effectively decreased, so as to realize the dry culture of the paddy rice in the saline-alkali soil.

The invention provides a planting method of selenium-enriched millets in moderate temperature arid and semi-arid area with the altitude of 1500 to 2100 m. The planting method comprises the following steps: harvesting preceding crops, ploughing, carrying out stubble chopping and deeply ploughing in early spring; carrying out rotary tillage and soil preparation, crushing soil and flattening, and carrying out film mulching and moisture conservation; before rotary tillage and soil preparation are carried out, applying a composting fertilizer, a nitrogen fertilizer, a phosphorus fertilizer, a potassium fertilizer, and a humic acid selenium fertilizer; coating seeds by using a seed coating agent or carrying out seed dressing by using 50 percent of carbendazim, wherein the seed coating agent is prepared from zinc sulfate, ammonium molybdate, manganese sulfate, a water retaining agent, the carbendazim and a film-forming agent; the sowing amount is 7.5 to 11.2 kg per hectare, the line spacing is 20 cm and the sowing depth is 2.5 to 4.5 cm; dressing urea at a booting stage or spraying monopotassium phosphate and / or urea on foliage. The yield of the millets can reach 6000 to 8500 kg per hectare, the spike number reaches 675 thousand spikes per hectare, thousand grain weight is 3.3 to 3.7 g and the selenium content of millet products is 0.1 to 0.2 mg / kg.

The invention relates to a subsoiling cultivation method for corn with stubble, which belongs to the technical field of agricultural production and is completed by the steps of returning high stubble to the field, planting between rows of high stubble and subsoiling with stubble. The invention realizes the safe return of straw to the field, combined with topdressing and deep loosening during the corn growth period, so that the high stubble can be naturally rotted and returned to the field, increasing soil organic matter, fertilizing soil fertility, and making sustainable use of land resources. Realize complete, uniform and strong seedlings, and continuously high-yield, high-quality, and efficient corn production.

The invention relates to a water-saving and salinity-controlling planting method of oil sunflower in saline-alkali wetland and belongs to the technical field of crop planting with an aim to solve thetechnical problem that in arid or semi-arid areas with shortage of fresh water resources, high underground water and heavy saline-alkali soil, the oil sunflower planted in the saline-alkali wetland islow in emergency rate and survival rate of seedlings. The key point of the technical scheme to the problem lies in that the method includes that 1, land leveling and preparation must act according tocircumstances, and before winter irrigation of alkali-affected soil, farm manure, calcium superphosphate and chemical improver treatment are performed; 2, furrow ridges are divided by adopting wide-narrow rows, the oil sunflower is sown in side furrows of the ridges after ridge forming and film covering, and fertilizer is applied to bottoms of the furrows; 3, in oil sunflower growing period, onlyone furrow irrigation is needed, no accumulative water is caused in the field after irrigation, and no irrigation is needed if heavy rainfall is available in the seedling period. With the method, thetechnical shortcoming that the low-lying saline-alkali wetland is less prone to dry farming is overcome, natural rainfall is sufficiently utilized, irrigation water is saved, and the effect of improving the seedling rate and yield is obvious.

The invention discloses a phosphorus fertilizer application method for cotton in the seedling stage. The method comprises the following steps: dividing the total phosphorus fertilizer to be applied into base fertilizer and seed fertilizer; spreading the base fertilizer in the soil in which the cotton is to be planted and tilling the soil deeply; and applying the seed fertilizer in the soil in which the cotton is planted. The phosphorus fertilizer application method provided by the invention has the following beneficial effects: the phosphorus fertilizer application method is renovation of the traditional fertilizer application methods in which the phosphorus fertilizer is applied as the base fertilizer; as the seed fertilizer, the phosphorus fertilizer can effectively improve the salt and alkali resistance of the crops in the seedling stage, reduce the seedling death rate, improve the survival rate of seedlings, promote premature and rapid growth of the cotton and increase the yield, solves a critical bottleneck problem in cotton production in the saline-alkali soil and has important practical application value; and the method provided by the invention is simple and convenient to operate, is practical and can be widely used for cotton production in the saline-alkali soil.

The invention discloses a recovery, utilization and management method for black soil mountain vegetation, and belongs to the technical field of the recovery, utilization and management of degraded grassland vegetation in alpine regions. The method includes content of the planting area selection, grass seed selection, sowing modes, sowing amount, sowing time, sowing depths, fences, rodent control and agronomic measures of black soil mountain degraded grassland vegetation recovery, and the reasonable utilization and scientific management after planting. The method is suitable for the planting and utilization of black soil mountain degraded grassland vegetation that the thickness of a soil layer is more than 15 cm and the slope is greater than or equal to 15 degrees.

The invention provides a cultivation method suitable for solar greenhouse overwintering-crop cucumbers. The cultivation method comprises the following steps: a cucumber variety with high disease resistance, low temperature and high humidity resistance, weak light resistance and high yield is selected; pumpkin seedling hypocotyls are grafted on cucumber seedling hypocotyls by a cuttage grafting method in early to mid October; before ridging, furrow application of farmyard manure and base fertilizer and earthing up are carried out firstly, then, three-nutrient compound fertilizer is broadcast, ridging is performed in the east-west direction, after ridging, drip irrigation tapes are spread and mulching is carried out; adjacent two rows of cucumber seedlings are planted on each ridge surface in a triangular shape; when the cucumber seedlings grow to 20 cm or higher, vines are hung obliquely towards the south to enable main vines of cucumbers to form an included angle of 45-60 degrees withthe ground; hanging ropes used for hanging vines are parallel to the ground and vertically parallelly move along with growth of the main vines of the cucumbers; and a solar greenhouse is adopted to control temperature and humidity, the temperature is kept at 25-30 DEG C in the daytime and 13-15 DEG C at night. The cultivation method is suitable for cucumbers to uniformly receive sunlight under low-temperature and less-sunlight conditions.

The invention discloses a reasonable-plough plough layer ploughing method compatible with tightness of tight seedling belt and loosened line spacing, which belongs to the technical field of agricultural planting and is completed by adopting steps of seedling belt repression and line-spacing deep scarification during an elongation stage. A seedling belt in the current year can be repressed after corns are planted in spring, and the compacting degree of repressed soil is 1.26-1.28 g / cm<3> in volume weight; and deep scarification is carried out during the elongation stage of the corns. According to the reasonable-plough plough layer ploughing method disclosed by the invention, the plough layer construction compatible with the tightness of tight seedling belt and loosened line spacing is realized through a method of comprehensive deep scarification and local repression of the seedling belt, and a compact, wet, ventilative and good condition is created; the contradictions between ventilating and lodging prevention, fertilizer supply and fertilizer absorption, water permeability and humidity raising and the like of a plough layer can be solved; the contradiction between straw mulching and seedling protecting can be solved, and labor-saving farming can be realized.

The invention provides a novel pseudo-ginseng seedling root biological coating agent, and a preparation method and applications thereof. Water soluble gel made of a water soluble film forming material, plant probiotics, and auxin is painted on the surface of the roots of pseudo-ginseng seedlings to form a layer of biological membrane with beneficial strains. The coating agent is prepared by the following steps: weighing a proper amount of water soluble film forming material, dissolving the film forming material by hot water to form a water solution (5-10%), cooling the water solution to a temperature of 28 to 30 DEG C, mixing the water soluble film forming material with an equal-volume water solution with a certain probiotics concentration, adding a root growth promoter into the mixed solution, and evenly mixing to obtain the pseudo-ginseng seedling root biological coating agent containing probiotics. The provided pseudo-ginseng seedling root biological coating agent has the advantages that the film forming performance and breathability are good, moreover, the biological coating agent carries a proper amount of beneficial microbes with rapid multiplication capacity, thus the biological coating agent can supply enough nutrients for the pseudo-ginseng seedlings and is capable of improving the micro-ecological environment in the late period of growth of pseudo-ginseng, and the yield of pseudo-ginseng is increased finally.

An angelica sinensis breeding base material germination accelerating method belongs to the technical field of Chinese herb planting. The angelica sinensis breeding base material germination accelerating method comprises collecting or selecting angelica sinensis breeding base materials full in clustering; preprocessing the angelica sinensis breeding base materials as standby; soaking the preprocessed angelica sinensis breeding base materials in plant growth retardants and then sowing the soaked angelica sinensis breeding base materials. According to the angelica sinensis breeding base materialgermination accelerating method, cremocarp fruits of angelica sinensis are selected as the angelica sinensis breeding base materials and processed by removing wings to improve the activity; the wing-removed angelica sinensis breeding base materials are duly soaked in the plant growth retardants of uniconazole to improve the implantation rate and the germination rate as well as to achieve the effects of seedling invigoration after the cremocarp fruits of the angelica sinensis are sown.

The invention discloses a marsdenia tenacissima direct-seeding breeding method. According to requirements of the method, land selection, land preparation and seedbed construction are performed in a time period of March to April every year. By measures of pre-seeding seedbed treatment, direct-seeding medium preparation, pre-seeding seed treatment, after-emergence seedling maintenance, field topdressing and the like, harms caused by pest and disease damages of nematode, root rot, aphids and the like to seedlings can be effectively prevented and controlled, seedling breeding time is short, the seed emergence rate reaches 85% or above, the seedling survival rate reaches 78% or above, and sufficient seedlings can be provided for large-area planting of marsdenia tenacissima.

The invention discloses a codonopsis cultivation substrate and a preparation method thereof, and belongs to the technical field of agricultural soilless cultivation. The substrate comprises, by weights, 50-100 parts of peat soil, 40-70 parts of waste materials from lentinus edodes, 20-45 parts of cow dung, 5-15 parts of codonopsis stems and leaves, 2-10 parts of codonopsis herb residues, 10-25 parts of soybean straw, 60-150 parts of dark loessial soil, 3-7 parts of radix sophorae flavescentis, 2-5 parts of Chinese angelica, 10-25 parts of silkworm feces, 5-10 parts of palygorskite and 10-15 parts of inorganic fertilizer. The inorganic fertilizer is composed of urea, calcium hydrophosphate and potassium sulfate, and the weight ratio of the urea, the calcium hydrophosphate and the potassium sulfate is 45:38:17. The cultivation substrate is simple in raw material formula composition, convenient to use, environmentally friendly and suitable for industrial production.

The present invention relates to one kind of hybrid of water absorbing material of polyacrylate / acrylamide / bentonite prepared through intercalating copolymerization and its preparation process. The material has distilled water absorbing rate of 200-300 g / g, cost 30-40 % lower than available water keeping agent, and thus wide application foreground in developing dry farming agriculture, planting tree, sand fixing weed plantation and protect ecological environment.

The invention provides a high-ridge film-mulching and drip-irrigation salt-inhibiting planting method for sunflowers, and belongs to the technical field of crop planting. In order to solve the problems that the yield is reduced due to drought, weak growth vigor and the like caused by difficulty in seedling emergence and seedling protection of conventionally planted sunflowers in Hetao irrigation districts and difficulty in irrigation due to salt damage dead seedlings in the growth period, a ridging and film mulching machine is innovatively adopted to complete furrowing, ridging, film mulching and drip irrigation tape laying operation at a time, plastic films cover the bottoms of furrows to ridge surfaces, seeds are manually sown on the ridge surfaces, In the growth period, drip irrigation is performed for salt leaching and water supplementing, and the high-ridge film-mulching and drip-irrigation salt-inhibiting planting method for the sunflowers is formed. According to the method, soil salinity is redistributed after high ridges are formed, a low-salt environment is provided for sunflower growth by combining drip irrigation and drip washing of root layer salinity in the sunflower growth period, crop water absorption is facilitated by drip irrigation, root growth is promoted by combining irrigation and fertilizer dripping, and plants are good in growth vigor and high in yield; the purpose of salt inhibition in moderate and slight saline-alkali soil can be achieved, and the seedling protection rate is increased; and the method makes a great contribution to high-quality development of sunflower planting in the saline-alkali soil.