93 results about "Early season" patented technology

Polynucleotides and polypeptides incorporated into expression vectors have been introduced into plants and were ectopically expressed. The polypeptides of the invention have been shown to confer at least one regulatory activity and confer increased yield, greater height, greater early season growth, greater canopy coverage, greater stem diameter, greater late season vigor, increased secondary rooting, more rapid germination, greater cold tolerance, greater tolerance to water deprivation, reduced stomatal conductance, altered C / N sensing, increased low nitrogen tolerance, increased low phosphorus tolerance, or increased tolerance to hyperosmotic stress as compared to the control plant as compared to a control plant.

Plants are optimally grown under artificial narrowband Photosynthetically Active Radiation (“PAR”) of multiple colors, and color palettes, applied in but partially time-overlapping cycles. As well as a long, growing season, cycle, the colored lights are cyclically applied on a short, diurnal, cycle that often roughly simulates a peak-season sunny day at the earth latitude native to the plant. Bluer lights are applied commencing before redder lights, and are likewise terminated before the redder lights. Infrared light in particular, is preferably first applied at a time corresponding to early afternoon, and is temporally extended past a time corresponding to sunset. The colored lights and light palettes preferably rise to, and fall from, different peak intensities over periods from 10 minutes to 2 hours, and relative peak intensities of even such different colors as are used at all vary up to times two (×2) in response to differing PAR requirements of different plants. Computer-controlled colored LED lights realize all.

The invention discloses a variety breeding and early-season high-yield cultivation technology for actinidia arguta. The variety breeding and early-season high-yield cultivation technology includes procedures of 1 variety selection, 2 seedling propagation, 3 field planting, 4 underground management, 5 pest control and 6 pruning. Seedling propagation carried out in a step 2 includes collecting and storing cuttings and performing root cutting on the cuttings in sunlight greenhouses, particularly, root cutting is performed on the cuttings in the nutrient pots, and greenwood cutting is performed on the cuttings. Compared with the prior art, the variety breeding and early-season high-yield cultivation technology has the advantages that seedlings are raised in the sunlight greenhouses by means of root cutting, so that the seedling growth time can be prolonged, the seedlings are healthy and are high in growth potential after being planted, and a foundation is laid for early and high yields; frame surfaces are replaced by small canopy frames, and accordingly operation and management can be facilitated.

The invention discloses an organic cultivation method based on rotation of autumn melons, vegetable broad beans, rice and water chestnuts, and relates to the technical field of rotation cropping. The organic cultivation method includes the following steps: (1), establishing an organic cultivation production base; (2), cultivating according to a rotation method; (3), cultivating organic melons, organic vegetable broad beans, organic rice (planting one batch of early-season rice in the first year and the second year of a rotation cycle) and organic water chestnuts according to quality requirements and production technology standards of organic agricultural products, and fertilizing soil by straw turnover and organic fertilizer preparation. The rotation method includes sequentially cultivating the early-season rice, the autumn melons and the vegetable broad beans at the first year, and sequentially cultivating the early-season rice and the water chestnuts at the second year, wherein every two years serve as a rotation cycle. The organic cultivation method has the advantages that the organic melons, the organic vegetable broad beans, the water chestnuts and the organic rice can be cultivated in the same cultivation production base, a high-efficiency ecological circular agriculture cultivation mode, high practicability and operability and high social, economic and ecological benefits are achieved, and the method has a broad promotion and application prospect in the middle and lower reaches of Yangtze River.

The invention discloses a double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method which comprises the following steps of: a, cleaning a ditch and draining in winter, to be specific, ditching to let rice field leakage water go in winter so as to keep no accumulated water on a field surface before seedling throwing of early season rice; b, performing no-tillage planting and management on the early season rice, to be specific, growing seedlings of the early season rice by using a plastic soft tray, throwing the seedlings when the seedlings have 3.5-4.5 leaves, and wetting as well as irrigating the early season rice in the whole process; c, utilizing straws of the early season rice, to be specific, remaining high stubbles while harvesting the early season rice; d, performing no-tillage planting and management on late rice, to be specific, growing seedlings of the late rice by using the plastic soft tray or growing the seedlings in a dry manner without the tray, and adopting an irrigation mode of irrigating shallowly and exposing the field; e, utilizing the straws of the late rice, to be specific, remaining high stubbles while harvesting the late rice. The double-cropping no-tillage seedling-throwing straw-to-farmland rice high-yield and high-efficiency production method solves the problems of great tillage labor intensity, slow nutrient transformation, easy runt seedlings and no growth of the rice, late maturity, low yield and the like of soil gleyization and secondary soil gleyization rice production in south rice areas, is a matured production technology for improving low-yield rice fields in soil gleyization and secondary soil gleyization, and achieves great application and generalization values in the aspects of reducing agricultural production cost, improving soil organic matters, decreasing fertilizer applying amount, increasing rice yield, improving moisture and fertility preservation performances of soil and the like.

The invention discloses a production method for cadmium-polluted rice land governing and rice cadmium reduction. The production method comprises the following steps: a, preparing biomass charcoal by late rice straw to return to field and prepare milk vetch green manure in winter; b, overturning and pressing milk vetch green manure along with spraying lime; c, regulating and controlling water fertilizer of early season rice; d, preparing biomass charcoal by straw in early season to return to field; e, regulating and controlling water fertilizer of late rice. The production method improves soil fertility, reduces the effectiveness of cadmium polluted soil, combines the water fertilizer regulation and management, and effectively stops and controls the cadmium transfer towards the rice planting body, in particular to rice; the production method provides a low-price and practicable environmental protection regulating technology for the green repair of soil heavy metal cadmium pollution and rice cadmium reduction on the polluted rice land, and provides technical support to the polluted rice field governing and rice cadmium reduction in the southern China.

The invention discloses a rice-loach-frog coupling intercropping crop rotation method, belonging to the technical field of cultivation condition improvement by a hydroponic method. The rice-loach-frog coupling intercropping crop rotation method comprises the following steps of: sowing and planting early indica rice; transplanting; breeding loaches and little frogs; feeding the frogs and the loaches; harvesting the early indica rice; and capturing the frogs and the loaches. The rice-loach-frog coupling intercropping crop rotation method can be applied to rice and early season rice cultivation and has the advantages of high yield, good quality, good benefits and the like.

The invention discloses a hybrid rice senility-resistant grain-plumping lodging-resistant high-yield culture technology, and belongs to the technical field of super hybrid rice planting. Existing super hybrid rice has the defects of premature senility, lodging and the like. According to the method, in a rice field, early season rice cultivars are cultured in a disalignment mode with the density being 5*(5+10) inch, the late rice cultivars are cultured in a disalignment mode with the density being 6*(5+10) inch, and the single-season semilate rice cultivars are cultured in a disalignment mode with the density being 6*(8+10) inch. The early season rice cultivars, the late rice cultivars and the single-season semilate rice cultivars are cultured in a disalignment mode with different densities, so that senility resistance and grain plumping are facilitated, and the setting rate and the yield are improved. Accordingly, rice senility, lodging and the other phenomena can be avoided, and the high social and economic benefits are provided for agricultural technology progress and rice cultivation in China.

The invention discloses a high intensity duck breeding system for the early season rice ratooning rice field and a duck breeding method. The duck breeding system comprises a rice field canal system arranged in the rice field, and a first island and a second island are arranged in the rice field canal system. The duck breeding intensity of a unit rice field is obviously increased by the system, duck breeding intensity increases from 225-450 piece / hectare to 1350-1500 piece / hectare, the unit quantity of duck breeding is obviously increased and the unit output value is increased; meanwhile the problem that local rice seedlings are seriously damaged by the congestion and trampling of the duck entering the rice field is solved by the change of the landscape of the rice field.

The invention discloses a method for remedying crop cultivation after flood disasters happen to double cropping rice fields in south China. After flood disasters happen to double cropping rice fields in south China, crops including autumn maize or autumn vegetables are selected to be planted in the rice fields where the previous crops are early season rice, and the rice field-upland field rotation is conducted on the early season rice and the autumn crops by changing the double cropping rice annual planting mode. The method for remedying crop cultivation after flood disasters includes the first step of conducting after-calamity remedy cultivation on autumn maize, and the second step of conducting after-calamity remedy cultivation on autumn vegetables. In the step of conducting after-calamity remedy cultivation on autumn maize, new maize varieties are introduced, seed direct seeding is adopted, field management is well conducted, and harvesting is timely conducted. In the step of conducting after-calamity remedy cultivation on autumn vegetables, appropriate vegetable varieties are selected, seedling transplantation is conducted, field management is enhanced, and harvesting is timely conducted. According to the method for remedying crop cultivation after flood disasters, great economical losses caused when no early season rice is harvested and late rice seedlings are destroyed after flood disasters happen to double cropping rice fields in south China and late rice production can not be normally conducted can be reduced, and the method is simple and easy to achieve, beneficial for lowering the occurrence degree of plant diseases and insect pests after the disasters, and capable of ensuring economic incomes.

Polynucleotides and polypeptides incorporated into expression vectors have been introduced into plants and were ectopically expressed. The polypeptides of the invention have been shown to confer at least one regulatory activity and confer increased yield, greater height, greater early season growth, greater canopy coverage, greater stem diameter, greater late season vigor, increased secondary rooting, more rapid germination, greater cold tolerance, greater tolerance to water deprivation, reduced stomatal conductance, altered C / N sensing, increased low nitrogen tolerance, increased low phosphorus tolerance, or increased tolerance to hyperosmotic stress as compared to the control plant as compared to a control plant.

The invention discloses a method for improving acidified soil and enhancing soil fertility by the aid of nitrogen-fixation cyanobacteria. The method includes steps of 1), selecting anabaena to be usedas nitrogen-fixation cyanobacteria application algae species, and carrying out step-by-step extended culture; 2), deeply plowing crop rotation fields by the depths of 15-20 cm at early-season rice transplanting earlier stages in double-cropping rice modes at first, transplanting rice, then applying nitrogen, phosphorus and potassium fertilizers, inoculating the nitrogen-fixation cyanobacteria according to a quantity of 3-5 kg of fresh alga for each mu, harvesting early-season rice, then shallowly plowing the crop rotation fields by the shallow plowing depths of 5-10 cm, planting late rice, and applying the nitrogen-fixation cyanobacteria and nitrogen, phosphorus and potassium fertilizers according to the same process; alternately, deeply plowing the crop rotation fields by the depths of 15-20 cm at first at rice transplanting earlier stages in single-cropping rice modes, transplanting the rice, then applying the nitrogen, phosphorus and potassium fertilizers, and inoculating the nitrogen-fixation cyanobacteria according to a quantity of 5-7 kg of fresh alga for each mu. The method has the advantages that the application amount of nitrogen fertilizers can be reduced by 50%, the nitrogen-fixation cyanobacteria can be fed into red soil along with deep plowing or shallow plowing, the organic matter content of the red soil can be increased after the nitrogen-fixation cyanobacteriais decomposed, and accordingly the soil fertility level of the red soil can be comprehensively enhanced.

The protein is the following protein (a) or (b): (a) protein consisting of amino acid sequences shown in the sequence 1 of a sequence table; and (b) protein derived from the sequence 1 by substituting and / or deleting and / or adding one or more amino acid residues in the amino acid sequence of the sequence 1 and associated with plant low temperature growth. After the protein is transferred to the plant, the protein enables that the low temperature sensitivity of plants is changed to low temperature insensitivity, so the protein can be applied to plant hereditary improvement and other work to improve the low temperature tolerance of plants (such as rice). The gene can be transferred to a low temperature intolerant variety to improve the low temperature tolerance thereof for the application of breeding of early season rice in the middle and lower reaches of Yangtze River and rice in northern areas of China.

The invention discloses a high-yield cultivation method for direct seeding of early-season rice, direct seeding of late rice and clover seeds. The method comprises following steps: 1, direct-seeding of early-season rice around April.10th and harvest by utilization of a harvester before July.15th; 2, direct-seeding of late rice from July.15th to July.20th and full heading before September 20th and harvest by utilization of the harvester before Oct.25th; 3, direct-seeding of clover seeds in late-rice fields from the last ten days of September to the first ten days of October, retting early-season rice as green manure before direct seedling around 12 days. The method further comprises step 1, high-yield cultivation technology of direct seeding of early-season rice; step 2, high-yield cultivation technology of direct seeding of late-season rice; step 3, high-yield cultivation of clover seeds. The high-yield cultivation method for direct seeding of early-season rice has following features: a good mode of output, quality and efficiency can be fully represented; and labor is saved, rice seedling beds, fertilizers, medicine and water are saved; soil is improved; rice quality is good, output and income are increased.

The invention discloses a dry direct sowing cultivation method for double-cropping late rice. The method comprises the following steps: a water discharging opening in a rice field is opened in the ripening stage of early-season rice for slow drying of the field, rice stubbles are reserved after the early-season rice is harvested, and a harvester is utilized to uniformly spread harvested and threshed straw on the rice stubbles in the rice field to form a rice carpet; a skid-mounted grass-pressing plate is adopted to act on the straw in the rice carpet to form an ecological carpet, and ecological planting holes used for sowing and ecological fertilization holes used for fertilization are formed in the ecological carpet, so that the ecological carpet is constructed to be an ecological hole carpet; under no-tillage no-irrigation dry direct sowing conditions, sprouted rice seeds are sown in the ecological planting holes, the ecological planting holes are covered, a fertilizer is applied into the ecological fertilization holes, and the ecological fertilization holes are covered; and on the basis of conventional field management, when the rice grows to an early tillering period, young ducks are thrown to prevent and control diseases, pests and weeds, a compound fertilizer is applied in an active tillering period, a compound fertilizer is applied again in a booting stage, and thereforedry direct sowing cultivation for the double-cropping late rice is completed. The method provided by the invention improves a utilization rate of chemical fertilizers, and reduces an amount of waterused in a steeping field and a use amount of pesticides.

The invention provides a planting method for yellow-fleshed peaches. The method comprises the steps of selecting flat sand land with sufficient sunshine as a planting base, digging pits in the planting base and applying fertilizer in each tree pit; planting seedlings into the tree pits and performing grafting on the seedlings after the seedlings survive; selecting two-branch main branches or three-branch main branches, cutting off vertically growing branch tips, cutting dense branch tips for tips growing in an inclined way to prevent intersecting of branch tips; performing fertilization management on peach trees in the peak season of growth of peach trees every year; performing fruit thinning after peach blossoms fall off; bagging fruits on the trees; harvesting fruits, and in winter, performing trimming treatment on the peach trees for shaping. The planting method is scientific and reasonable, guarantees the nutritional ingredients of yellow-fleshed peaches and high yield of yellow-fleshed peaches, and promotes production and income increase; the reasonable management guarantees the quality of yellow-fleshed peaches.

A breeding method for special early season rice varieties for rice noodle processing belongs to the technical field of rice breeding and comprises the following steps: 1) selecting standby rice varieties, of which the amylose content is 25+ / -3%, SBV is greater than or equal to 1,000 cP and BDV is less than or equal to 500 cP; 2) taking the selected rice varieties as parents or one of the parents, and performing hybridization; 3) starting with F2, selecting single plants of which the SBV is greater than or equal to 1,000 cP and the BDV is less than or equal to 500 cP according to the shapes of plant leaves, and planting strains; 4) in F3, reserving single plants of which the SBV is greater than or equal to 1,000 cP and the BDV is less than or equal to 500 cP, and planting strains; 5) among strains of F4 to F6, selecting single plants according to the shapes of plant leaves, maturing rate, resistance and yield, and continuing to performing generation adding stabilization; 6) planting strains to F7, and selecting shaped strains of which the amylose content is 25+ / -1%, the SBV is greater than or equal to 1,000 cP and the BDV is less than or equal to 500 cP, thus obtaining special early season rice varieties for rice noodle processing. The method provided by the invention has the characteristics of simplicity, convenience and high efficiency.

The invention relates to a breeding method of an early-stage functional type super early rice variety, belonging to the field of rice breeding technology. The breeding method comprises the following steps: screening the variety of rice with high germinating capacity at proper temperature; carrying out seed germination low-temperature flooding treatment; carrying out low-temperature treatment of germination stage; carrying out normal-temperature restoration treatment; screening low-temperature-resistance variety in germination stage; continuously carrying out normal-temperature restoration treatment; carrying out low-temperature seedling stage treatment; screening low-temperature-resistant variety of seedling stage; hybridizing with superhigh-yield rice; screening seeds harvested by F1; planting into a strain F3 and selecting excellent single plants; selecting excellent single plants from F4-F6 strains, and adding generations stably; planting the strains to F7 generation, and determining and selecting to obtain the early-stage functional type super early rice variety. The obtained early-season rice can effectively avoid the irregular directly-seeded rice germination, and germ and seedling rotting caused by early-stage low temperature and flooding, the production reduction risks caused by cold damage and flooding in seeding and seedling stage are reduced, the development of the rice direct-sowing technology is promoted, and the per unit yield of double-cropping early rice at the middle and lower Yangtze river is improved.

The invention discloses a bean curd capable of clearing summer-heat and reducing blood pressure and a preparation method of the bean curd. The bean curd is characterized by being prepared from the following raw materials by weight: 700g of fresh early season rice leaves, 10g of fresh mint leaf, 50g of fresh dendrobium, 10g of pericarpium citri reticulatae, 100g of selfheal head, 50g of raw radix astragalis, 500g of fresh early season rice root, 100g of ficus pumila vine, 500g of dry myricaria leaves, 500g of dry pine twig leaves and 7kg of purified water. According to the bean curd, the fresh early season rice leaves are soaked with a medicine liquid with medicinal effects instead of the traditional boiled water; traditional plant ashes are replaced with pine and cypress ashes; fresh dendrobe pulp with the efficacies of promoting the secretion of saliva or body fluid, tonifying the stomach, clearing away heat, nourishing yin, improving eyesight and tonifying the spleen and fragrant fresh mint leaf with the efficacies of detoxifying, dispelling wind and emitting heat are added and are condensed into a gelatin frozen bean curd with the functions of food, health-care, treatment and the like; the medicinal value of the traditional single Japanese premna herb bean curd is increased; and the trouble that patients with hypertension have to frequently decoct medicinal herbs is avoided.

The invention belongs to the field of crop production and discloses a seasonal drought relieving and high yield ensuring compound agent for double cropping rice. The compound agent includes an early-season rice special type and a later-season rice special type. The early-season rice special type includes, by weight, 50% of hydroxyethylcellulose, 20% of amino acid raw powder, 15% of monopotassium phosphate, 10% of potassium fulvate, 2.5% of zinc sulfate, 2% of prohexadione calcium, 0.2% of compound sodium nitrophenolate, and 0.05% of abscisic acid; and the later-season rice special type includes, by weight, 30% of hydroxyethylcellulose, 30% of amino acid raw powder, 20% of potassium fulvate, 10% of monopotassium phosphate, 5% of Kang polyphenol, 4.8% of zinc sulfate, and 0.2% of sodium alpha-naphthylacetate. In the formula, comprehensive drought resistant capability of rice is improved through several ways. The compound agent is quick in effects, has long lasting time and has good effects.

The invention discloses a cultivation method for early season rice interplanted yams, and belongs to the technical field of crop interplanting. The cultivation method comprises the following steps of variety selection, land selection, rice planting, yam soil preparation and planting, yam seed soaking and germination acceleration, base fertilizer application, timing seeding, field management and timing harvesting. By using characteristics that rice plants are short and upright, and the requirement of yams on illumination is not high during seedling stage after planting of the yam, rice and yam field-upland field rotation is performed, the yams are interplanted in the middle and later period of early season rice, the planting time of the yams is advanced, the problem that the yams are low in yield and poor in quality due to plant diseases and insect pests due to continuous cropping is solved, the yield can be improved, the yams can appear on the market ahead of time, and the economic benefit is high.

The invention relates to a method of passivating cadmium pollution in a rice field in situ by bottom ash of an agriculture and forestry biomass direct-fired power generation plant. The cadmium pollution in the rice field in situ is passivated by using a composite material formed by the bottom ash of the agriculture and forestry biomass direct-fired power generation plant, animal carbon and bentonite as a repairing agent. Compared with biomass ash which is independently used, compounded with the animal carbon, the cadmium fixing ability of the material is improved obviously. By applying the repairing agent to repair the cadmium polluted land, the effect is obvious. The maximum adsorption amount of cadmium in solution by the repairing agent is 34.8 mg / g. After applying the repairing agent which is over 5 kg / m<2> to the in situ cadmium polluted soil, the soil cadmium passivating effect is obvious and the cadmium content in effective state is reduced obviously. By inputting the repairing agent at one time, the cadmium content in early season rice is reduced by 60% or above in a same year, and the cadmium content in late rice is reduced by 57-73%. Compared with a blank control group, the effective silicon content of soil of a blot with the repairing agent is enhanced obviously, and the plant height of rice is increased.

The invention relates to a cultivation method for interplanting early season rice with Chinese yams. The method comprises the steps of land selection and preparation, variety selection, seed soaking and germination accelerating of Chinese yam seeds, sowing, enough Chinese yam base fertilizer application, field management, harvesting and the like. By means of the characteristics that early season rice plants are short and upright and the light requirements of the seedling stage after sowing is conducted on the Chinese yams are low, scientific and reasonable internplanting is conducted on the early season rice and the Chinese yams, the problems that pest and disease damage is caused by continuous cropping, so that the Chinese yam yield is low, and the quality is poor are solved, the yield can be increased, the early season rice and the Chinese yams can come into the market in advance, and the good economic benefit is obtained; field management is conducted in the mode of combining intertillage weeding, topdressing and pest and disease damage control is adopted, reasonable nutritional ingredients can be provided for the early season rice and the Chinese yams, and meanwhile the pest and disease damage control effect is achieved; the control effect is significant, and the phenomenon that chemical pesticide is used for treatment is avoided.

Provided is a mixed planting method of sweet basil, oilseed rape and corn. The method is characterized by comprising the following steps of land selection and preparation, oilseed rape planting, sweet basil planting, early-season corn planting, oilseed rape harvesting, late-season corn planting and daily management of the sweet basil, early-season corn and late-season corn. The mixed planting method of the sweet basil, oilseed rape and corn has the advantages that by means of land interplanting of the sweet basil, oilseed rape and corn, land can be fully utilized, crop groups can be reasonably arranged according to the planting and growing seasons, fertility of the land is sufficient, and high yield and high efficiency are achieved; the yield-increase effect of dominance in border row is fully exerted, the land is fertilized through the land, the yields of crops are increased, land fertility is improved, and the method is beneficial for sustainable yield increase.

The invention discloses a high-yield planting method for high-quality rice. The high-yield planting method for high-quality rice comprises the following steps that (a) seeds are selected, wherein according to local ecological conditions, production conditions, economic conditions, cultivation level and the harm of plant diseases and insect pests, high-yield and high-quality varieties strong in disease and pest resisting capability, resistant to lodging, strong in tillering, high in ear-bearing tiller percentage, capable of bearing large ears, high in ear-bearing rate and suitable for local planting are selected through examination, approval, experiments and demonstration; (b) strong rice seedlings are cultivated, the seeds are spread thinly and air-dried for 2-3 days before sowing, the emergence rate and germinative force of the seeds are improved, early season rice seeds are soaked for 3-4 days, late rice seeds are soaked for 2-3 days, frequent water change is needed when the outsidetemperature is high, the seeds can also be soaked with warm water when the temperature is low in early spring to shorten the seed soaking time, and in-cellar germination acceleration can be adopted for seeds of early season rice and middle-season rice. The high-yield planting method has the advantages that breeding is performed by selecting excellent varieties, rice can be healthier and has certain disease preventing ability through reasonable seedling raising and seedling strengthening in the growth process, and high rice yield can be achieved through timely fertilization, weeding and diseaseand pest prevention.

The invention discloses an improvement method for organic maturation of yellow mud fields. For an early season rice field, the improvement method includes the steps: 1), planting astragalus sinicus and applying inorganic fertilizer; 2), applying nitrogen fertilizer at a stage when astragalus sinicus sends forth a first true leaf, wherein scalar quantity of the nitrogen fertilizer is 6.9-10.35 kilograms per hectare; 3), reapplying the nitrogen fertilizer at a stage when astragalus sinicus grows vigorously, wherein scalar quantity of the nitrogen fertilizer is 17.25-34.5 kilograms per hectare; 4), taking astragalus sinicus as green manure to be returned to the field, and applying chemical fertilizer. For double cropping rice, the improvement method includes 1), directly returning straw of early season rice into field in situ, or applying livestock and poultry manure for soil maturation; 2), additionally applying nitrogen fertilizer, and adjusting C / N ratio of the straw; 3), applying rotten organic fertilizer or mushroom residue before seeding middle-season rice or late-season rice; 4), performing light dewatering and ventilating after transplanting of the middle-season rice or the late-season rice, and re-watering. By the improvement method, soil structure is improved, soil volume weight is lowered, soil cation exchange quantity is increased, community structure of soil microorganisms and soil enzyme activity are affected.

The invention discloses a method for raising seedlings of early season rice through plastic trays. The method comprises steps as follows: seed soaking for germination acceleration, preparation of soil, management of seedling beds and seedling trays, sowing and seedling management, cloth covering and shed building, seedling field management and lifting of seedlings. Compared with the prior art, the method has the following advantages: the seedling raising cycle is shortened through multiple times of seed selection and microwave treatment; nutrition of each layer of soil in trays can meet growth requirements of early season rice seedlings due to layering of the soil in the trays; non-woven fabric is selected for covering the trays according to the characteristics of the early season rice, changes of temperature difference are reduced, accordingly, the tiller number is increased, and the quality of the seedlings is improved; management processes of seedling raising are specified, the management intensity is improved, the quality of the seedlings is higher, and the yield of the seedlings is increased about 5.3% than that of common early season rice seedlings.

The invention discloses characteristic rice noodles. The rice noodles are prepared from the following raw materials in parts by weight: 70-99 parts of early season polished long-grained nonglutinous rice, 1-30 parts of tartary buckwheat powder, and 0.5-1 part of purple sweet potato powder. The invention provides a method for preparing the rice noodles. The method comprises the following steps: a,stir-frying the tartary buckwheat powder; b, puffing the raw materials: taking 1 to 34 parts of the early season polished long-grained nonglutinous rice, conducting milling, mixing the milled rice powder with 1 to 30 parts of the tartary buckwheat powder and 0.5-1 part of the purple sweet potato powder, conducting extrusion and puffing to obtain a mixed puffed powder, conducting baking, crushing and grinding, and conducting sieving with an 80-mesh sieve for later use; c, preparing slurry; d, conducting fermentation: subjecting the obtained puffed powder slurry to standing at a room temperaturefor 2-3 hours for fermentation; e, washing rice and soaking the rice: after the puffing, flushing the surplus early season polished long-grained nonglutinous rice in parts by weight with a high-pressure jet gun for removing impurities, and conducting soaking for 48 hours; f, slurry grinding: coarsely grinding the soaked early season polished long-grained nonglutinous rice, adding the puffed powder slurry to the ground rice powder according to a powder-slurry ratio of 1:3, and carrying out secondary slurry grinding until the baume degree of the obtained slurry reaches 25-28; g, spreading the slurry, and steaming the slurry into solid rice flour; h, conducting pre-drying and ageing; i, conducting shredding and shaping; and j, conducting baking.

The invention discloses a method for producing aquatic vegetables and a green manure during crop rotation of water mimosa and paddy rice. With the method, paddy rice and water mimosa are planted according to a certain ratio during a double-cropping rice period. Water mimosa can grow together with paddy rice in a paddy environment. Rhizobium of the water mimosa on the part on the surface of the paddy can fix nitrogen, such that soil nitrogen content can be increased. After the harvesting of early-season rice, the edible parts of water mimosa are harvested, and all the non-edible parts are turned back to the field as green manure; after the harvesting of late-season rice, winter cropping of water mimosa is carried out; about 1 month before early-season rice planting in the next year, the edible parts of the winter-cropping water mimosa are harvested, and all the non-edible parts are turned back to the field as green manure. With the paddy rice and water mimosa crop rotation method, soil fertility can be maintained on a basis of increasing paddy rice yield. Also, the use of chemical fertilizer nitrogen can be reduced, such that non-point source pollution caused by paddy rice production can be retarded.