221 results about "Rice wheat" patented technology

The invention belongs to the technical field of tillage cultivation, and discloses a method for straw full-amount returning and rice-wheat planted seedling in a rice-wheat double cropping area. Under the condition of rice-wheat double-season straw full-amount returning, planted seedlings of next-stubble crops are not influenced, and due to the fact that mechanical operation is adopted in a key production link, labor intensity and production inputs are greatly reduced. In addition, straw returning is further favorable for soil fertilizing and environment protection.

The invention relates to a production method of high-yield organic rice and belongs to the technical field of crop cultivation. The production method of the high-yield organic rice is a method for rice and soft-shelled turtle culture and shrimp-fish culture and comprises the following steps of (A) rice field transformation, (B) rice cultivation, (c) soft-shelled turtle, shrimp and fish culture, (D) daily rice management and (E) product harvest. The production method of the high-yield organic rice has the advantages of utilizing ingestion and activities of soft-shelled turtles, shrimps and fish to perform fertilizer increase, weeding and disinsection on a rice field, playing fertilizer applying, weeding, disinsection, disease prevention roles and the like, achieving internal material and energy circulation of a rice field ecological system, reducing dependence degree of the agricultural product yield and quality on the surrounding environments, keeping stable and high rice yield, remarkably improving the economic rice benefit and promoting large-scale organic rice production.

The invention provides weeding compositions containing 2-(quinoline-8-yl)carbonyl-cyclohexane-1,3-dione compounds and application of the weeding compositions. Each weeding composition comprises a (a) composition, wherein the (a) composition comprises at least one 2-(quinoline-8-yl)carbonyl-cyclohexane-1,3-dione compound, a tautomer thereof and a salt thereof. The compositions provided by the invention are especially applicable to selective control on weeds or crop securing. The compositions are specially used to selectively control weeds in corn (maize), wheat, barley, meadow, pasture, rice, sorghum, sugarcane and plantation crops, and also are applicable to plant comprehensive processing. The compositions provided by the invention can be used to secure crops especially cereal plants.

The invention discloses a breeding method for a disease-resistant functional rice two-line sterile line, belonging to the technical field of special rice breeding. The method comprises the following steps: selecting a variety with high rice blast resistance, a rice variety with low water-soluble protein content, rice with high natural vitamin A content and rice with high resistant protein content; performing hybrid and multi-cross polymerization as well as backcross breeding of an excellent two-line sterile line to breed the disease-resistant functional rice two-line sterile line with high rice blast resistance, excellent agronomic trait and yield trait, high resistant starch content, high vitamin A content and low water-soluble protein content. Hybrid rice compounded by using the two-line sterile line is resistant to rice blast, has high resistant starch content, high vitamin A content and low water-soluble protein content, has the functions of reducing blood sugar and blood fat and losing weight, and is suitable for patients with kidney diseases and diabetes.

The invention relates to an all-in-one multifunctional machine for combined reaping, ditching, burying and spraying for rice and wheat, which comprises a ditching device, a straw guide device and a spraying device, wherein the ditching device is connected with a tail beam of a combined harvester through a movable bracket; the straw guide device is hinged with a straw discharge opening of a threshing separating device of the combined harvester through a pin shaft; the ditching device comprises a gear box, a ditching cutter head and a hydraulic oil cylinder; the ditching cutter head of the ditching device is arranged on the resistance central line of the tail of the machine through the movable bracket; and the spraying device is also arranged, and a spraying nozzle of the spraying device is positioned at an inlet of the straw guide device or the ditching surface of the ploughed ditch. The all-in-one multifunctional machine has the advantages that: the ditching cutter head of the ditching device is arranged on the resistance central line of the machine through the movable bracket, so that the machine cannot bear the push force action of sides when carrying out operation, and the machine can maintain rectilinear motion; and the spraying device sprays biological bacterial fertilizer (decay agent) on the straws at the inlet of the straw guide device or the plugged ditch surface, and can promote the straw to return to the filed and decay as soon as possible.

The invention discloses a rice-wheat straw activated carbon powder toughening particle friction material and a preparation method thereof. The rice-wheat straw activated carbon powder toughening particle friction material comprises the following components: 48 parts of a rice-wheat straw activated carbon powder toughening particle, 5 parts of tire powder, 2 parts of talc, 4 parts of graphite, 1 part of pyrite powder, 2 parts of phenolic modified resin, 37 parts of natural rubber, 0.5 part of an anti-aging agent and 0.5 part of sulfur. By the toughening particle friction material prepared by the preparation method, the toughness and the friction coefficient of friction materials such as brake blocks can be increased, the production cost is decreased, the toughening particle friction material is environmentally friendly and free of pollution and simultaneously the use channels of rice-wheat straws can be broadened.

The invention discloses a rice overgrowth-controlling, lodging-resistant and yield-increasing agent and an application thereof. The rice overgrowth-controlling, lodging-resistant and yield-increasing agent mainly comprises a plant growth regulator and a fertilizer, wherein the regulator is brassinolide and paclobutrazol or uniconazol, and the fertilizer is one or combination of more than two of substances containing N / P / K / B / Zn / Ca / Cu / Fe / Mn / Mo / Me / S / Cl / Si and other elements, such as urea, potassium dihydrogen phosphate, diammonium phosphate, calcium carbonate, potassium nitrate, silicon fertilizer, zinc sulfate, ferrous sulfate, potassium chloride, boric acid, borax, copper sulfate, ferrous sulfate, molybdenum fertilizer, magnesium sulfate, potassium sulfate, manganese sulfate and rare earth fertilizer. The rice overgrowth-controlling, lodging-resistant and yield-increasing agent has good safety and can effectively shorten the length between neck-panicle nodes and top second nodes of rice and enhance lodging resistance of rice; simultaneously, the rice overgrowth-controlling, lodging-resistant and yield-increasing agent can not affect safe dates of full heading and the grain number per spike of rice, prolong the service life of functional leaf of rice, improve the seed setting rate and the 1000-grain weight of rice and significantly affect the yield of rice. The rice overgrowth-controlling, lodging-resistant and yield-increasing agent is suitable for various types of rice, including conventional rice, hybrid rice and super hybrid rice, and has the advantages of low cost and high performance-price ratio.

The invention relates to staple food flour with balanced nutrition. The staple food flour is prepared from wheat flour, oat flour, potato flour, coix seed flour, millet flour, corn flour, sorghum flour, rice flour, glutinous rice flour, soy flour, mung bean flour, small red bean flour and navy bean flour. The production method comprises the following steps of a, respectively drying wheat, oat, unhusked rice, corn, sorghum, rice and glutinous rice, and grinding the dried wheat, the dried oat, the dried unhusked rice, the dried corn, the dried sorghum, the dried rice and the dried glutinous rice; b, respectively drying coix seeds, dried potatoes, soybeans, mung beans, small red beans and kidney beans, and performing superfine grinding; and c, pouring the powdery materials into a mixer, uniformly stirring the powdery materials so as to obtain mixtures, and loading the mixtures into bags so as to obtain finished products. The staple food flour with balanced nutrition, disclosed by the invention, is made by scientifically compounding 13 kinds of food materials in food grains, beans and potatoes, and is good in mouth feel; people can eat cereals every day in a balanced manner, nutrient components of the staple food flour can be sufficiently neutralized, a traditional habit that single wheat flour or single rice is eaten is changed, the constitutions and the immunity of people are enhanced, the purpose of increasing the physical health level of people is achieved, and the staple food flour disclosed by the invention can be used as staple food flour in daily life of people.

The invention relates to a production method of high-yield organic rice and belongs to the technical field of crop cultivation. The production method of the high-yield organic rice is a method for rice and soft-shelled turtle culture and shrimp-fish culture and comprises the following steps of (A) rice field transformation, (B) rice cultivation, (c) soft-shelled turtle, shrimp and fish culture, (D) daily rice management and (E) product harvest. The production method of the high-yield organic rice has the advantages of utilizing ingestion and activities of soft-shelled turtles, shrimps and fish to perform fertilizer increase, weeding and disinsection on a rice field, playing fertilizer applying, weeding, disinsection, disease prevention roles and the like, achieving internal material and energy circulation of a rice field ecological system, reducing dependence degree of the agricultural product yield and quality on the surrounding environments, keeping stable and high rice yield, remarkably improving the economic rice benefit and promoting large-scale organic rice production.

The invention relates to a spinning straw fiber extraction method. The spinning rice and wheat straw fiber extraction method is characterized in that the method includes the following steps: 1). the steam explosion pretreatment: straws are air-dried and then are cut into segments; 2). the pretreated straws are put in a steam blasting tank; 3). nutrient glucose and urea are recharged; 4). the strain degumming: first, choosing strains: choosing mushroom white rot fungi or planerochaete chrysosporium as the strain; second, to pave the steam explosion straw mixture obtained in the third step to be 10-100mm high; third, poking the strains onto the straw piles; fourth, culturing on the culturing bed; fifth, cleaning; sixth, bleaching; 5). irradiation curing: the bleached straw fiber is irradiated with Gamma rays with the irradiation amount of 2-10kgy to obtain the radiation curing straw fiber; 6). the straw fiber is oiled; 7) the straw fiber is dried; 8) the dried straw fiber is dispersed to obtain the spinning rice and wheat straw fiber. The invention has the characteristics of environmental protection and low cost.

The invention discloses a straw artificial board, and belongs to the technical field of building materials. A preparation method of the straw artificial board comprises the following steps: successively weighing the following components in parts by weight: 20-30 parts of pretreated wheat straws, 25-35 parts of activated rice straws, 5-8 parts of an additive and 15-20 parts of a modified adhesive;adding the pretreated wheat straws and the activated rice straws in a blender mixer; successively adding the additive and the modified adhesive in the blender mixer; stirring and mixing for 35-60 minutes under the conditions that the temperature is 55-65 DEG C and the rotating speed is 320-380 r / min to obtain a mixture; injecting the mixture into a mold, and carrying out compression moulding underthe conditions that the temperature is 180-220 DEG C, and the pressure is 2.8-4.0 MPa to obtain a blank board; and drying the blank board at a constant temperature for 45-90 minutes under the condition that the temperature is 75-85 DEG C to obtain the straw artificial board. The obtained straw artificial board has excellent mechanical property and water resistance.

The invention relates to a breeding method of five-color rice. According to the breeding method, indica type white rice variety type A or Deyou 17 is used as female parents, stem type colorful rice variety Lijiang small millet is used as male parents, artificial castration pollination and hybridization is carried out, according to the seedling target, pedigree method breeding and color mode RBG (red, blue and green) selection are combined, indica and stem subspecies colorful rice with the basically identical agronomic characters including the strain height, the growth period and the like and different rice seed coat colors are obtained through seven-year and six-generation breeding, and the coarse rice colors of the five-color rice are respectively the black, the sepia, the red, the yellow and the white. The same-field planting of the rice with five colors is realized, the labor and the time are saved, the planting cost is identical to that of the conventional rice, and the yield is higher than that of other colorful rice. The five-color rice is used as the special rice, the nutrition value of the five-color rice is much higher than the ordinary rice, the market value is higher than that of the ordinary rice, and better industrial development prospects are realized.

The invention discloses a rice-wheat combined harvester which comprises a machine body, a cutter arranged at the front end of the machine body, a straw crusher arranged at the rear part of the machine body, an ear bearing plate, an inclined conveyor, an ear drying mechanism, a threshing mechanism, a grain cleaning mechanism and a grain box for collecting grains, wherein the ear bearing plate is arranged below the cutter, the inclined conveyor is arranged beside the ear bearing plate, the ear drying mechanism is arranged beside the top of the inclined conveyer, the threshing mechanism is arranged below the rear part of the ear drying mechanism, the grain cleaning mechanism is positioned below the threshing mechanism, and an auger sprocket is arranged between the grain box and the grain cleaning mechanism. In the rice-wheat combined harvester, the cutter is only used for harvesting ear parts, and straws crushed by the straw crusher are scattered in the field. Compared with the prior art, the invention omits a separation mechanism and a straw stacker, reduces the size, lightens the self weight, can be used for harvesting in overcast and rainy weathers, and can meet requirements on important farming seasons and links.

The invention discloses a polyethyleneimine-loaded straw adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) removing outer layer skins from crop straws, cutting the crop straws into sections, and drying the crop straw sections for later use; (2) adding 1 to 10 percent of a PEI solution according to a ratio that each gram of straw contains 50 to 70 mL of the solution, and performing oscillating immersion to enable the PEI to be loaded on the straws; (3) at the end of the immersion, taking out the straws, and repeatedly washing the straws till the pH is 8 to 9; (4) draining water from the straws, and then drying the straws, thus obtaining the polyethyleneimine-loaded straw adsorbent. After rice straws are directly immersed in the PEI, the inner and outer surfaces of the straws are loaded with the PEI; in the cross sectional direction, the PEI on the outer side is more than that on the inner side, thus forming a novel chelated material, and the adsorption performance of the straws is greatly improved. An obtained adsorption material is of a ring shape, and is adjustable in length-to-diameter ratio, high in fluid mechanics and mechanical strength and convenient to use. The obtained composite adsorption material is good in effect of treating gallic acid wastewater and tannic acid wastewater, and is high in capacity of adsorbing and removing heavy metal cations such as Cu<2+>, Zn<2+> and Cd<2+> and PO4<3->.

The invention relates to a method for retarding agricultural non-point source pollution by comprehensively applying biological carbon and a nitrification inhibitor, belongs to the field of agricultural non-point source pollution research, and is dedicated to retarding non-point source pollution caused by nitrogen gas losses and subsequent atmospheric deposition in a paddy field and vegetable field ecosystem. According to the method, the biological carbon and the nitrification inhibitor are applied in fields of a rice-wheat crop rotation rice field and intensive vegetable cultivation ecosystem, therefore emission of gaseous nitrogen, such as N2O and NOx, is effectively reduced, and the atmospheric deposition is reduced to retard the non-point source pollution; the utilization rate and the yield of crops are increased, and nitrate nitrogen content of soil and migration of nitrate nitrogen to a water body are reduced to retard the non-point source pollution. The method is a brand-new, rapid, simple and efficient non-point source pollution retarding method, can be used for a wide variety of agricultural ecosystems, is convenient to operate and easily available in material, can be widely applied to prevention and control research on the agricultural non-point source pollution to paddy fields and vegetable fields, and provides an effective means for deeply researching the agricultural non-point source pollution.

The invention discloses a method for mid-season rice-wheat rotation in cadmium mild contamination soil and belongs to the technical field of contamination soil environment management. The method includes: (1), in 5-8d before crop transplanting, applying a soil cadmium passivation conditioner on the cadmium mild contamination soil, and well mixing with plough layer soil; (2), transplanting mid-season rice Yongyou 7850, waterflooding in the whole growth period, spraying a zinc reinforced cadmium blocking and controlling agent to leaves in the tillering period, the booting period and the groutingand fruiting period respectively, and draining field water in one week before harvesting mid-season rice; (3), fully moving out straw after the mid-season rice is harvested, directly sowing wheat Ningmai 13, cultivating to harvesting, and removing wheat straw completely. According to the mid-season rice-wheat rotation mode in the method, repair of the cadmium mild contamination soil is completedwhen agricultural production is completely normal, and the method is free of economic benefit loss and easy for farmers to accept; harvested straw is moved out of farmland, so that no secondary pollution is caused.

The invention relates to a seedling dividing thresher and a dust sucking device of a stem-preserving type (semi-feeding) rice-wheat combine harvester. The seedling dividing thresher comprises a seedling divider, a bracket, an upper packing auger, a lower packing auger, a bearing, a grain screw conveyer, a dispersing machine, a chain wheel, a drive chain, an iron sheet outer cover, and an a-shaped straw supporting plate, wherein the upper packing auger and the lower packing auger are arranged in parallel and respectively provided with a screw on a front end surface and an arch-shaped tooth on a rear end surface. In the dust sucking device, a dust sucking cavity in the shape of a cylinder or a cuboid is arranged on the rear upper end of an integral cutting table and provided with a narrow and long air suction opening facing forward hyponastically, the upper end of the rear side of the dust sucking cavity is provided with an air suction channel, the air suction channel is communicated by the air suction opening and an air suction cavity at the two ends of the air suction channel and is installed in parallel with the air suction cavity, the middle of the air suction channel is communicated with an air suction pipe, and the rear end of the air suction pipe is provided with an air blower used for sending air flow to the rear end of the whole machine. The invention realizes threshing before mowing by virtue of the tension of crop roots towards ground and can save complex and faultful straw conveying and clamping mechanism, thereby reducing the load, the dead weight and the manufacture cost of the harvester, and moreover, the dust suction device can reduce pollution and improve production efficiency.

The invention provides a vertical threshing and rotary tillage combined harvester which comprises a stalk cutter, a stalk scrabbling wheel, a threshing vertical shaft, a threshing cylinder, a grain receiver, a straw outlet, a girder frame, a gear case and an engine. The grain receiver, an impurity discharge fan and a straw discharge fan are sequentially arranged at the lower portion of the threshing vertical shaft from bottom to top, the middle of the threshing vertical shaft penetrates through the threshing cylinder, the straw outlet is formed in the top end of the threshing vertical shaft, the stalk cutter and the stalk scrabbling wheel are arranged at the front end of the threshing cylinder, the engine and the gear case are arranged on the girder frame, a rotary cultivator is connected in the gear case, and a walking caterpillar track is arranged at the lower end of the girder frame. The whole vertical threshing and rotary tillage combined harvester is provided with a power transmission route, has a function of simultaneously achieving rice-wheat harvesting and field soil rotary tillage, is compact in structural arrangement, small in size, moderate in gravity center and stable and reliable to operate and is also suitable for operation in southern districts.

The invention discloses a production method of a large-scale rice wheat straw microorganism feed, and belongs to the field of biological feeds. Rice wheat straw is used as a main carbon source, and inorganic nitrogen is used as a main nitrogen source. The production method comprises the following steps of performing high-efficient pure solid cultivation on a white rot fungus enzyme preparation, then converting the cultivated white rot fungus enzyme preparation in large inoculum amount to a first-stage fermentation medium of the rice wheat straw, and besides, inoculating serial lignocelluloses degradation bacteria and candida utilis bacteria for synergistic rapid degradation and transformation; adding bacillus and saccharomyces cerevisiae for second-stage fermentation; and using lactic acid bacteria for third-stage anaerobic fermentation so as to obtain finished products. The lignin of the straw biological feed is greatly reduced, genuine protein is increased to 11%b or above, and the raw materials do not need to be sterilized; the finished products do not need drying treatment, lysozymes are enriched, and the production cost is extremely low. The large-scale rice wheat straw microorganism feed can be used as a superior coarse feed and a protein grain feed for cattle and sheep, and the additive quantity can reach 60% or above; the additive quantity can also be about 10%, so that the large-scale rice wheat straw microorganism feed is used for simple stomach animals. The large-scale rice wheat straw microorganism feed is suitable for mass production, and the feeding and economic effects are obvious.

The invention discloses a rice-wheat combine harvester and a swath detection device and detection method thereof. The rice-wheat combine harvester comprises the swath detection device; the swath detection device comprises a laser sensor, a signal collector and a vehicle-mounted monitor; the laser sensor is installed above a header of the rice-wheat combine harvester and used for acquiring the boundary of a harvested area and an unharvested area of the rice-wheat combine harvester and outputting distance and angle information of a measured object; the signal collector is installed on the rice-wheat combine harvester, connected with the laser sensor through a data bus and used for acquiring and sending distance and angle information data output by the laser sensor; the vehicle-mounted monitor is installed on the rice-wheat combine harvester, connected with the signal collector and used for completing processing, analyzing and displaying on signals sent by the signal collector and data storage. The invention further discloses the swath detection method of the swath detection device.

The invention relates to a rice-turtle-fish-duck four-in-one ecological symbiosis production method suitable for a two-crop-a-year paddy field in the south. The rice-turtle-fish-duck four-in-one ecological symbiosis production method suitable for the two-crop-a-year paddy field in the south is characterized by comprising the steps of 1 base selection and symbiosis field building, 2 symbiosis field disinfection, 3 rice planting, 4 symbiosis field object (turtles, fishes and ducks) breeding, 5 pest and disease damage control and 6 timely harvest. According to the method, a rice field ecological space is fully utilized, putting time and treatment method of various symbiosis objects are reasonably arranged, the rice, the fishes and the ducks are harvested twice a year, the turtles are harvested once a year, various harvested agricultural products are green and pollution-free and have good economic and ecological benefits. The method is a new green, ecological, energy-saving and efficient recycling agricultural production mode and is especially suitable for requirements of the country for agricultural development at the moment.

The invention provides a production process of rice wheat straw graphene for a friction material, and the process comprises the following steps: oxygen-poor calcinations of rice and wheat straws to obtain carbon powder, activation of the carbon powder, then graphitization of the carbon powder in 2400 to 2600 DEG C environment, and activation and enhancement processing to obtain artificial graphite; addition of concentrated sulfuric acid into a reaction pot, addition of the artificial graphite for stirring and mixing when the reaction pot is cooled to-5 to 0 DEG C, and addition of sodium nitrate for reaction for 50 minutes in 3 DEG C environment; addition of potassium permanganate at 98 to 100 DEG C for reaction for 1 hour, and control of temperature to drop to 35 DEG C for reaction for 1 hour; centrifugal washing for removal of the concentrated sulfuric acid, and drying in 30 to 45 DEG C environment to obtain the rice wheat straw graphene. The advantage is low production cost of the friction material.

The invention relates to a pre-treatment and quantitative analysis method for rapid determination of the content of the cadmium element in rice. The method comprises the following steps (1) crushing rice into powder; (2) preparing an agar solution with a concentration of 0.8 to 1.5 gL; (3) weighing a plurality of parts of rice powder as parallel samples, respectively subjecting the parallel samples to suspension and volume fixation with the agar solution prepared in the step (2), carrying out dilution with dilute nitric acid so as to obtain to-be-measured sample liquids with rice concentration of 4 to 16 gL and directly diluting the agar solution obtained in the step (2) with dilute nitric acid so as to obtain a blank sample; (4) preparing cadmium standard solutions, determining the absorbance value of each cadmium standard solution by using graphite furnace atomic absorption spectrometry and drafting a cadmium element standard curve; and (5) determining the absorbance values of the to-be-measured sample liquids and the blank sample and calculating cadmium content of the to-be-measured sample liquids. The method provided by the invention is simple and fast, can rapidly detect the content of the cadmium element in rice and has good accuracy and repeatability.

The invention relates to a rapid counting method for rice-wheat grains. The method comprises the steps of acquiring a grain image: vertically acquiring the image of rice-wheat grains by utilizing photographing equipment; extracting grains: extracting grains based on color features; detecting the angular points: extracting angular points at the adhesion parts of grains based on the angular point detection algorithm; detecting closed regions: detecting the number of closed regions formed by adhered grains based on the closed region detection algorithm; calculating the number of grains according to the following formula: the number of grains=the number of angular points at the adhesion parts of grains / 2-the number of closed rgions+1. The counting method disclosed by the invention is high in calculation efficiency. Meanwhile, the number counting accuracy of grains is not influenced by human factors.

Disclosed are a composites plate of rice and wheat straw and the process thereof, which belong to the technical field of processing of constructional or decorative planks. The invention is characterized in that the composites plate is processed by the materials according to weight percentage of rice straw powder, wheat straw powder or mixed powder of rice and wheat powder 40-60%, light magnesium-oxide 10-30% and epoxy adhesive 30-40%. The process comprises the steps that preparing rice straw powder, wheat straw powder or mixed powder of rice and wheat powder according to the weight percentage and placing the powder in a container, then adding the light magnesium-oxide in the rice straw powder, wheat straw powder or mixed powder of rice and wheat powder according to the weight percentage, then mixing the mixture homogeneously under constant temperature, then adding the epoxy adhesive according to the weight percentage, stirring the mixture continuously homogeneously under constant temperature, pouring the stirred mixture in a prefabricated mould, and finally required plate finished products are accomplished after pushing process. The invention has easily accessible materials, solves the problem of further processing, which is high in strength, firm and durable.

The invention discloses bovine compound feed and a preparation method thereof. The feed is prepared from, corn, bran, soybean extraction, cottonseed cakes, rice wheat straw, salt, sodium bicarbonate, pawpaw, bamboo shoots, black fungus, sweet potatoes, carrots, balsam pear, mushroom, lotus root starch, edible amaranth, Chinese cabbage, bananas, Chinese dates, onion, a vitamin premix compound and a microelement premix compound. The bovine compound feed has the advantages that the feed contains traditional Chinese additives with the functions of clearing away heat and toxic materials, cooling blood and hemostasis, breaking stagnant and eliminating blood stasis, can improve bovine immunity and treat the bovine epizootic fever and has the advantages of being short in treatment course, good in effect, free of toxic and side effects, purely natural, safe, convenient to use and the like.

The invention discloses a breeding method of three-line hybrid combination of colored rice. The method comprises the following steps: carrying out hybridization and backcross by taking colored rice Cas a male parent and a three-line maintainer line B as a female parent, and breeding a three-line maintainer line and a three-line sterile line of colored rice; carrying out hybridization and backcross by taking colored rice D as a male parent and a restorer line R as a female parent, and breeding a colored rice restorer line; screening heterosis, and screening based on rice quality, yield and resistance to obtain a new colored rice three-line hybrid combination; and finally, constructing a three-line hybrid system of colored rice. The method provides a natural five-color colored rice three-line hybrid rice, the rice is obviously different from conventional single-color colored rice conventional varieties or hybrid varieties produced at present, and changes a current situation that the so-called five-color rice is formed by mixing various colored rice in the market; and the rice has more complete nutrition and more uniform quality, and is beneficial to cooking and deep-processing applications.

The invention provides a header device and a giant rice combine-harvester. The header device comprises a header mechanism and a straw returning mechanism which are mounted at the front end of the harvester, and the header mechanism is positioned on the upper portion of the straw returning mechanism. The header mechanism and the straw returning mechanism are placed in the front of the harvester andvertically arranged to form the double-layer header device, rice ears are cut and fed by the aid of the upper header mechanism, stalks of the cut rice ears are crushed and returned by the aid of thelower front straw returning mechanism, upper harvesting and lower crushing operations are finished, and the header device is particularly applicable to harvesting of 'giant rice', effectively adapts to ultrahigh stalk characters of the 'giant rice' and solves the problems that stalks wind a reel, are incompletely cut and cannot be smoothly fed when a common header harvests the 'giant rice', and the common header is poor in adaptability and the like.

Provided is a machine for chopping and returning rice and wheat straw root stubbles into soil. An input shaft protection sleeve and a hanging frame assembly are arranged on the top of a cardan shaft which is connected with a middle gearbox assembly. After speed of the middle gearbox assembly is changed, the middle gearbox assembly is respectively connected with a side edge gearbox assembly and a chopping belt transmission assembly through a left transverse shaft and a right transverse shaft. Side plates are mounted on two sides of a rotary tillage cutter shaft. The chopping belt transmission assembly drives a chopping cutter shaft assembly to rotate. The machine is characterized in that an upper transfer roller and a lower transfer roller are mounted between the rotary tillage cutter shaft and the chopping cutter shaft assembly, and a straw guiding plate is arranged between the upper transfer roller and the lower transfer roller. The machine has the advantages of being simple in structure and convenient to select and assemble; and a hob and a stationary knife are adopted to chop the straw root stubbles in a matching mode, a cutting mode is bearing cutting, labor is saved, and power consumption is little.

The invention provides an accumulation preventing device for a rice-wheat combine harvester with a function of baling. The accumulation preventing device comprises a driving shaft, a threshing cylinder straw outlet, a material passage, a straw shifting mechanism and a baling device. The material passage comprises a material passage bottom plate and two material passage side plates, a material passage inlet is connected with the threshing cylinder straw outlet, and a material passage outlet is connected with the baling device. The straw shifting mechanism is arranged in the upper portion of the material passage and comprises a crankshaft, a connecting rod, shifting forks and a rocker; one end of the crankshaft is connected with the driving shaft while the other end of the crankshaft is connected with one end of the connecting rod through a rotary pair; the other end of the connecting rod is connected with one end of the rocker through a rotary pair; the other end of the rocker is fixed onto a frame; the shifting forks are arranged on the connecting rod. The accumulation preventing device has the advantages that straws discharged from a threshing cylinder can be timely and smoothly conveyed into a compression mechanism, straw accumulation and blockage are avoided, and operational stability and reliability are guaranteed.