102results about How to "Strong photosynthesis" patented technology

The invention relates to an improvement of a special vegetable organic culture medium for soilless cultivation of vegetables, in particular to a vegetable organic culture medium by using Chinese medicine residues as main raw materials. The vegetable organic culture medium is characterized by comprising the following components: Chinese medicine residues, 86.7-130kg / m<3>; peat, 65-86.7kg / m<3>; vermiculite, 122.5-163.3kg / m<3>; urea, 1.1-2.2kg / m<3>; superphosphate,1.6-3.2 kg / m<3>; potassium chloride, 1.5-3.0kg / m<3>; and a water-retaining agent, 1-2kg / m<3>. Aiming at the defects of the existing vegetable organic culture medium, the invention provides a production process and technology of the organic culture medium by using Chinese medicine residues as main raw materials. The organic culture medium produced by the technology can meet the demand of vegetables on fertility in a full growth cycle, no fertilizer or a little amount of fertilizer is only applied once in the middle and later states of cultivation, so the fertilizer and water can be saved, the time and labor are saved, the labor cost is reduced, and the benefit of vegetable production is effectively improved.

The invention discloses a method for cultivating hardy eucalyptus forests suitable for climates at north latitude of 26-30 degrees. The method comprises the following steps: determination of the varieties of eucalyptus trees, wherein eucalyptus dunnii and meranti are selected as the varieties of eucalyptus trees; seedling raising: carrying out propagation of the seedlings by using a clonal cutting seedling raising method or a method for growing seedlings by using seedlings, when cut seedlings grow to 12-25 cm, taking the seedlings out of greenhouses for transplanting; transplanting; carryout out post-transplanting management; and preventing and controlling plant disease and insect pests. Because the climate of zones at the north latitude of 26-30 degrees are sunny, rainy and many rivers, reservoirs and ponds are located in the zones, the characteristics that eucalyptus trees are heliophilous and absorbs much water can be satisfied; in the process of planting, through artificially applying fertilizers containing nitrogen, phosphorus, potassium, calcium, magnesium, a large number of organic matters, trace elements, amino acids and microbes and some active substance fertilizers, the effectiveness of nutrients can be increased; and compound fertilizers suitable for the growth of eucalyptus trees are applied to surviving seedlings every year, so that the characteristic that the eucalyptus trees absorb more fertilizer can be satisfied, therefore, eucalyptus trees artificially planted by using the method disclosed by the invention can averagely grow 4-6m in height and 3-4cm in DBH(diameter at breast height) each year, the eucalyptus trees can be cut down in batches in 4-5 years generally, and the wood yield per mu is 10-12 m<3>.

The invention provides a microbial film coating agent for preparation of microbial fertilizers. The microbial film coating agent contains biochemical humic acid or biochemical humate, agricultural composite amino acid powder, a biological growth promoter, a microbial agent, an anti-hardening agent, stone flour, a trace element salt and a dye special for fertilizers, wherein the mass ratio of the biochemical humic acid or biochemical humate, the agricultural composite amino acid powder, the biological growth promoter, the microbial agent, the anti-hardening agent, the stone flour, the trace element salt and the dye special for fertilizers is 2-5:15-25:1-3:1-2:8-20:45-60:10-25:0.5-1.5. The invention also provides a microbial compound fertilizer composition containing the microbial film coating agent. The microbial compound fertilizer composition is used for increasing vegetable yield, shortening the recovery period, reducing the disease rate, and / or improving soil fertility.

The invention relates to a breeding and cultivating method for a plant, in particular relates to a breeding and cultivating method for loose purple cauliflowers, and belongs to the technical field of plant cultivation. The breeding and cultivating method comprises the steps of hybridizing a loose purple cauliflower breeding material with a semi-compact purple cauliflower breeding material to obtain seeds F1, and selfing single strains with high comprehensive agronomic characters after the seeds F1 are sowed to obtain seeds F2; performing microspore culture on single loose purple cauliflowers through flower buds suitable for the microspore culture from the mononuclear edging stage to the double-core early stage to grow a large number of normal regenerated plants, selfing excellent DH plants of the loose purple cauliflowers to obtain a loose purple cauliflower excellent DH strain 03-12 serving as a recurrent parent which is hybridized with a cauliflower cytoplasmic male sterility source material CMS05-6, performing five generations of backcross transformation and selection to form a cytoplasmic male sterile line CMS08-2, and hybridizing the DH strain serving as a parent with the excellent cytoplasmic male sterile line CMS08-2.

The invention relates to a method for breeding virus-free micro-potatoes by an integrated net house and belongs to the technical field of potato breeding. The invention adopts the technical scheme that the method comprises the following process steps of: 1, selecting a breeding facility; 2, carrying out seedling exercising, transplantation and fixed planting; 3, preparing nutrient solution and applying a fertilizer; 4, managing the temperature of the net house; 5, carrying out seedling pressure, vermiculite culture and tip shearing; 6, carrying out ozone air sterilization and nutrient solution disinfection; 7, carrying out carbon dioxide fertilization; 8, harvesting the micro-potatoes. According to the invention, seedling exercising, field planting and the subsequent growing process in the micro-potato production are guaranteed not to be infected by viruses which use poison insects as vectors; the ventilation condition of a substrate on a culture bed is improved; quality of seed potatoes of the micro-potatoes is improved; tuberization is uniform; meanwhile, pollution to the environment is avoided; under the condition of the net house, the virus-free micro-potatoes are cultured by utilizing the soilless substrate and micro tubers with weights of 5 to 15g are bred. The virus-free seed micro-potatoes provide an important mode which solves the problem of seed nature degeneration caused by virus infection and is used for the production of virus-free seed potatoes.

The invention relates to a corn and soybean intercropping planting method. The planting method has a corn and soybean intercropping ridge rate of 1:2. Three lines of soybeans are sown in each ridge; two lines or three lines of corns are sown in each ridge; and the soybeans or the corns on each ridge of land are planted in a dog bite mark mode. Due to the adoption of the corn and soybean intercropping planting method, a conventional mode of planting the corns in a large area is broken through, high and short stem crops are combined to be planted in one plot of land to form a height difference, and the crops have high ventilation and high wind resistance and lodging resistance. Moreover, the corns can keep out the wind, keep out the cold and shade the sunlight for the soybeans. After the planting method is adopted, the yield of the corns is same with that of the corns planted in the large area, but the yield of soybeans is increased by 60 percent per hectare, so that the limited soil resources are better utilized and the aim of increasing both yield and income of farmers is fulfilled.

The invention relates to a red mud composite fertilizer and a preparation method thereof. By weight, the red mud composite fertilizer comprises 60-70 parts of red mud, 3-5 parts of a red mud activator, and 30-40 parts of a nitrogen phosphorus and potassium compound fertilizer, wherein the mass ratio of N, P2O5 and K2O in the compound fertilizer is 1:0.3-0.6:0.3-0.5. The red mud activator comprises, by weight, 30-40 parts of activated carbon, 50-60 parts of medical stone, 15-20 parts of bamboo fiber, 5-6 parts of phytase, 2-3 parts of magnesium sulfate, 1-2 parts of zinc chloride and 5-10 parts of polyacrylamide. The red mud composite fertilizer has comprehensive nutrition, contains more than 40 nutrient elements, and can comprehensively supply nutrients needed by crops. The water stability of the product is increased by more than 10 times. The product has very strong chelation, adsorption and ion exchange capacity to nutrient elements, can enrich and store the nutrient elements in soil and fertilizers, coincides with crops' need for fertilizers and has slow release performance, and achieves ''on-demand supply'' or ''on-demand release'', thereby overcoming the contradiction between rapid fertilizer loss and slow crop absorption.

The invention discloses a method for breeding a cold-resistant eucalypt Xiang eucalypt No.1 variety suitable for the north latitude 26 to 30 degrees. The method comprises the following steps of: determining Eucalyptus dunnii as a eucalypt variety, sterilizing a culture medium, sterilizing and disinfecting before inoculation, inoculating, subculturing, performing rooting culture, performing seedling culture, and culturing young seedling and sapling, wherein the inoculation is performed by the following steps of: (1) scissoring robust semi-lignified sprout branches, preserving heat with clean gauzes or sealing with clean gauzes for moisturizing, and bringing back to a room at a sunny noon or afternoon; (2) cutting away all leaves, leaving a small number of leaf stalks, soaking in 0.1 percent mercuric chloride solution for 3 to 12 minutes section by section according to the lignification degree of the branches, and washing with sterile water for 4 to 5 times; and (3) cutting stalk sections with sprouts, wherein the stalk sections are 1 to 2 centimeters and the branches of the upper branch sections of lateral buds are about 0.5 centimeters, inoculating on a culture medium of a 3 / 4ms+0.5 milligram / L IBA+0.3milligram / L NAA culture bottle, controlling the temperature to be 22 to 27 DEG C and illumination intensity to be 2,000 lx, and inducing the lateral buds to germinate.

The invention discloses application of a maize secretory phospholipase A2 gene ZmsPLA2-2 to changes in plant drought resistance properties. According to the application, the maize secretory phospholipase A2 gene ZmsPLA2-2 is cloned from maize and recombined into a plan expression vector in the sense or anti-sense form; the obtained fusion genes are introduced into plants according to a transgenic technology; through measurement on the drought resistance properties of the transgenic plants, the transgenic plants of which the drought resistance properties obviously improved or reduced and progenies of such transgenic plants are screened out, so that new plant germplasms with application value are created. The cDNA sequence of the maize secretory phospholipase A2 gene ZmsPLA2-2 is show as SEQ ID No.1, and the amino acid sequence encoded by the maize secretory phospholipase A2 gene ZmsPLA2-2 is shown as SEQ ID No.2. The plants of which the drought resistance properties can be changed are cultivated herbage crops such as poa annua, herbage, maize and cotton. The application of the maize secretory phospholipase A2 gene ZmsPLA2-2 has an important meaning in improvement of the crop yield under drought stress.

The invention relates to technical field of forage grass cultivation and aims at providing a high-yield method for cultivating goodyera yamiana II. According to the technical scheme adopted by the invention, the method comprises the following steps: land preparation, planting, field management, harvesting and fertilization. The goodyera yamiana II has high photosynthetic activity; the goodyera yamiana II in per mu of land can absorb 6-7 tons of carbon dioxide each year and has obvious effects on purifying air, absorbing harmful gases in the air and improving the environment; the goodyera yamiana II is planted in large areas on two sides of a highway, at the peripheries of a factories and mines and inside and outside parks, so that the air pollution degree is reduced, and the living environment of people is improved; the goodyera yamiana II is an ideal plant for preventing water and soil losses, treating stony desertification, desertization, salinization, desolate beaches and abrupt slopes; the goodyera yamiana II is soft in leaf, rich in juice and favorable in palatability, thereby being a favorable feed for various livestocks, birds and fishes.

The invention relates to an aquaculture feed feeding technique which is characterized in that when fish fingerlings are bred, bean cakes, peanut cakes, wheat bran, bran, silkworm chrysalis, fish meals and the like are fed, and the feeding rate is about 3%. After the fish fingerlings are bred for 15-30 days and grow to certain specifications, full rate artificial particle feeds are fed, and the feeding rate is 1-1.5%. Feeds are fed through automatic feeding machines. One to two automatic feeding machines are arranged on each pond, feeds are fed once every day, feeding time is from 9 o'clock to 14 o'clock, the speed of spraying particle feeds of the feeding machines is controlled, feeds are fed discontinuously, and the range of feeding feeds is enlarged as possible. The aquaculture feed feeding technique improves utilization rate of feeds, reduces feed cost, improves growth speed of pond fishes, guarantees water quality of ponds and improves pond yield and economic benefits.

The invention belongs to the field of fertilizer processing, and particularly relates to an amino acid fertilizer prepared from a lumbricus amino acid and fulvic acid potassium by a chelate method and a preparation method of the amino acid fertilizer. The amino acid fertilizer is characterized by comprising the following components in parts by weight: 45-60 parts of lumbricus amino acid, 12-20 parts of fulvic acid potassium, 15-20 parts of composite amino acid powder, 4-8 parts of a calcium superphosphate extracting solution, 3-12 parts of magnesium sulfate, 2.5-5 parts of zinc sulfate, 2-6 parts of ferrous sulfate and 4-6 parts of borax. The amino acid fertilizer prepared from the lumbricus amino acid and the fulvic acid potassium by the chelate method, disclosed by the invention, contains 18 kinds of lumbricus amino acids. The fertilizer disclosed by the invention contains macro elements of carbon, hydrogen, oxygen, nitrogen, phosphorus and potassium, secondary elements of calcium, magnesium and sulfur, and trace elements of iron, zinc and boron on the basis of conforming to the NY1429-2010 standard, is comprehensive in nutrition, and is beneficial to crop growth.

The invention relates to a breeding and cultivating method for a plant, in particular relates to a breeding and cultivating method for brassica oleracea, and belongs to the technical field of plant cultivation. Compared with a previous sterile line, a cytoplasmic male sterile line adopted in the breeding and cultivating method has the advantages that the male sterility is thorough, the sterile plant rate and the sterility are respectively 100 percent, the phenomena of low-temperature yellowing and abnormal development of flower organs in a seedling stage are avoided, and the resulting rate is high, and the early-matured and disease-resistant brassica oleracea also has the characteristics of high stress resistance and disease resistance; when a vegetative mass harvested from the brassica oleracea is used for preparing hybrid seeds through the cytoplasmic male sterile line, a recovery line is not required, and only a parent line is required. The method for obtaining the early-matured and disease-resistant brassica oleracea is simple, low in cost and convenient to popularize and has a large market prospect.

The invention discloses a peach tree shaping and pruning method. The method comprises the processes of cultivating horizontal central trunks, trunks, main branches and bearing branches; performing pruning, and finally shaping the peach trees into shapes of multiple opposite inclined main branches on the horizontal central trunks. The multiple main branches have the effects of dispersing apical dominance, mitigating tree vigor, inhibiting vegetative growth and promoting reproductive growth; the main branches are inclined, and have the effects of high utilization rate of light energy and strongphotosynthesis, especially in protected cultivation; and the main branches are inclined oppositely, and can effectively prevent splitting of the main branches and baldness of bases of the main branches. Compared with the trunk shape, the trunk shape has the advantages that fruit quality is significantly improved and well consistent.

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 relates to a plant breeding and cultivating method and in particular relates to a stem broccoli breeding and cultivating method, belonging to the technical field of plant cultivation. The method comprises the following steps: performing artificial emasculation to prepare hybrid first generation seeds F1 during flowering phase by utilizing a broccoli breeding material and a cabbage mustard breeding material, and performing selfing on a selected individual plant with excellent comprehensive agronomic traits to obtain F2; screening excellent individual plants, performing microspore culture on flower buds suitable for microspore culture from the late uninucleate stage to early dikaryophase stage, creating lots of normal regeneration plants, screening excellent DH plants for performing selfing, obtaining lots of DH strains with stable botanical traits, high combining ability and large pollen quantity, hybridizing one DH strain serving as a recurrent parent with a cytoplasmic male-sterile source material, breeding to obtain a cytoplasmic male-sterile line CMS091 with excellent comprehensive characters through five-generation backcross transformation, performing trial hybridized combination on the DH strain serving as a male parent and the cytoplasmic male-sterile line CMS091, and obtaining the early ripening disease-resistant stem broccoli.

The invention discloses a novel high-effective bio-composite fertilizer specially used for crops. The fertilizer is prepared from the following raw materials: urea, potassium chloride, monoammonium phosphate, ammonium bicarbonate, a biological additive, plant amino acids, bio-chemical fulvic acid, and EDTA-chelating medium and trace elements. The bio-composite fertilizer is advanced in production process, is improved in productivity, can save energy resource, and can promote photosynthesis, improve stress resistance of crops, improve quality of crops, improve soil and improve soil fertility.

The invention provides a total alkalinity regulator for aquaculture water environment, its use method and application. A kind of aquaculture method based on the total alkalinity regulator of aquaculture water environment provided by the present invention, comprises the following steps: (1) clear pond disinfection; (2) water quality regulation; (3) release seedling; (4) throw something and feed feed , the step (2) specifically includes: dry-sprinkling the total alkalinity regulator of the aquaculture water environment, dry-sprinkling with soil, or diluting with water and then pouring it into the water body. The total alkalinity regulator of aquaculture water environment provided by the present invention not only has the characteristics of wide sources, low price, safety and reliability, but also has a simple preparation method and is convenient to use, and can effectively regulate the alkalinity and hardness of aquaculture water reasonably, making To ecological breeding, to ensure the safety of breeding and improve economic benefits.

The invention relates to the technical field of agricultural plantation, in particular to a seedling raising method of pearl guava. The method includes the following steps of a, culturing rootstock seedlings, wherein new-generation pearl guava fruit seeds which are locally planted for four years or longer, grow robustly and are good in quality are selected for culturing the rootstock seedlings; b, selecting cutting slips, wherein one-year-old lignified pearl guava shoots with diameter of 0.6-1.3 cm are selected as cutting slips; c, conducting grafting, wherein the rootstock seedlings and the cutting slips are grafted through a cut-grafting method; d, conducting plantation management on the grafted seedlings. The method is simple in grafting process, and the grafted seedlings are strong in adaptability, can adapt to the damp and rainy and seasonal drought South China, are suitable for plantation soil in South China and have the advantages that fruiting is achieved all the year round, fruit drop is small, and fruits can be stored and transported easily.

The invention relates to a corn and millet intercropping method. According to the intercropping method, an intercropping ridge ratio of the corn and milet is 1:1.5, and three rows of the millet are sowed in each ridge; two rows or three rows of the corns are sowed in each ridge; and the millet or corns in each ridge of a land can be planted in a dog bitten grain mode. By the method, a traditional mode of planting corns in a large region is broken, high-stem crops and low-stem crops are planted on the land in a combined manner, so that a height difference is formed, and the crops are good in ventilation, and resist wind and lodging; and moreover, the corns can keep out the wind, relieve cold and shade the sun for the millet. By the intercropping method, the yield of the corns is the same with that of the corns planted by the traditional mode of planting the corns in the large region, but 0.4 hectare of millet is harvested in each hectare of the land, limited land resources are utilized better, and the purpose of increasing both production and income of farmers is achieved.

The invention discloses a nutritional antifreeze greening agent for garden lawn and a preparation method of the nutritional antifreeze greening agent. The greening agent is prepared from, by weight, 0.02-0.03 part of monopotassium phosphate, 0.04-0.06 part of EDTA-Fe, 0.04-0.06 part of EDTA-Mg, 1-2 parts of saponin, 0.5-1 part of potassium pyrophosphate, 1-3 parts of rhamnolipid, 0.5-1 part of citric acid, 0.005-0.007 part of ammonium humate, 1.5-2 parts of inorganic fertilizers, 1-2 parts of pimacol, 0.03-0.05 part of sodium nitrophenolate, 0.02-0.03 part of hydrogen peroxide, 0.03-0.04 part of potassium nitrate, 0.05-0.1 part of 6-benzylaminopurine, 0.06-0.08 part of 2,6-butylated hydroxytoluene, 0.02-0.03 part of calcium stearate, 0.008-0.015 part of iron amino acid, 0.005-0.01 part of green vegetable dye and 300 parts of deionized water. The preparation method includes steps of liquid A preparation, liquid B preparation and greening agent preparation. The greening agent provides sufficient nutrients for the lawn to improve growth conditions of the lawn to make the lawn green and is capable of improving greening effects of the lawn in a dormancy stage, action time can be prolonged, and high freeze resistance of the lawn is realized.

The invention relates to an antibiosis pest-resistant packaging membrane used before fruit harvest, which belongs to the field of agricultural product insecticidal degerming. The antibiosis pest-resistant packaging membrane comprises the following components in parts by mass: 100 parts of a base material, 1000-3000 parts of deionized water, 1-50 parts of an antiseptic, 2-30 parts of a plasticizer, 2-40 parts of an auxiliary agent, and 3-60 parts of an emulsifier. The preparation method comprises the following steps: the components are metered according to the above formula, then dissolved and blended at the temperature of 30-100 DEG C, then the material is cooled, and the product is sprayed through hydraulic equipment to the fruit trees in a spray form for forming the membrane. The membrane has the advantages of good biodegradability, mechanical property, obstruct performance and antibacterial property, and can substitute pesticides and fruit tree sleeve bags in the field of agricultural product insecticidal degerming.

A method for selectively culturing three lines of hybrid corn rice with ultra-strong dominance by distant hybridization between paddy rice and corn includes such steps as respective sexual hybridization of the sterile line of hybrid rice with the selfing line and recovery line of corn, and continuous respective backcross of the obtained first hybrid generation with the selfing line and recovery line of corn to obtain the sterile line, maintenance line and recovery line of corn rice, which have ultra-strong dominance, high resistance to stress and high yield.

The invention relates to an organic fertilizer, in particular to a total nutrient organic nutrient liquid fertilizer for fruit trees. The total nutrient organic nutrient liquid fertilizer is characterized by being prepared from the following raw materials in parts by weight: 20-80 parts of monopotassium phosphate, 200-800 parts of 70% sodium humate, 5-15 parts of 75% magnesium sulfate, 2-8 parts of cycocel, 20-80 parts of Xian brand ecological organic potassium, 200-800 parts of brown sugar and 500-1500 parts of alimentary acetic acid. The total nutrient organic nutrient liquid fertilizer provided by the invention can effectively control various disease and insect damages of the fruit trees, enhances the fruition rate of the fruit trees and has outstanding effects of improving soil, increasing crop yield and quality, enhancing cold-resistant disease-resistant drought-resistant capacities and promoting crop precocity and also contains multiple nutrients needed by the growth of multiple crops.

The invention discloses a stereoscopic cultivation method of Trichosanthes kirilowii Maxim and Volvariella volvacea. In the method, a shady field formed by Trichosanthes kirilowii Maxim sheds is fully utilized for planting Volvariella volvacea so as to increase planting earnings; besides, by planting Volvariella volvacea, soil organic matter for Trichosanthes kirilowii Maxim can be increased, the soil environment can be effectively improved, and soil diseases of Trichosanthes kirilowii Maxim can be reduced. By means of the cultivation mode, the land utilization rate can be effectively increased, and the economic benefit can be increased. The stereoscopic cultivation method of Trichosanthes kirilowii Maxim and Volvariella volvacea includes the following steps that in April, 2-3-year Trichosanthes kirilowii Maxim root tubers are selected, cut into segments and then planted in a field, after seedlings emerge, the sheds are built according to Trichosanthes kirilowii Maxim planting gaps, the Trichosanthes kirilowii Maxim seedlings are led onto the sheds, and meanwhile Trichosanthes kirilowii Maxim pruning is carried out; in the middle of June, making of a Volvaria volvacea strain is started, and meanwhile fermentation treatment of culture material is carried out; 15 days later, the strain is sown under the Trichosanthes kirilowii Maxim sheds, earthing-up is started after 2 / 3 of the fermented material is grown with hyphae, and then normal fruiting management and harvesting are carried out; Trichosanthes kirilowii Maxim is harvested in November.

The invention provides a greenhouse grape single-mother-vine fruiting successive-year double-cropping cultivation method. The method comprises pruning. According to pruning, annual grape mother vine cultivation, grape sibling mother vine arrangement, annual mother vine updating and grape annual mother vine double-fruiting double-cropping are included. The acre yield of grapes of the first batch is about 4000 kilograms, and the acre yield of grapes of the second batch is about 4000 kilograms; compared with traditional-mode double-cropping fruit grapes, mature grapes of the annual second batch, fruits are uniform, juice is full, color is bright, and the sugar content is two or more percent higher; according to the grape cultivation method, pruning is easy, and updating is easy.

The invention discloses a method for increasing flowering and setting efficiency of potato, comprising: selecting virus-free seed potatoes, and soaking mid-late ripening material with gibberellin in early January; planting each whole seed potato in a single pot, and filling each pot with matrix that is from fine soil, vermiculite and coconut coir at a ratio of 7:1:2; setting up a plant-fixing frame, fixing three rods around each pot, and twining with nylon cords; treating nitrogen fertilizer and a growth regulator, to be specific, applying nitrogen fertilizer to each pot upon seedling emergence, watering for leaching, and after supplement of the nitrogen fertilizer, spraying the plant growth regulator; increasing humidity before pollination, collecting pollen, and burying pistil stigmas in pollen piles for pollination; after pollination, spraying naphthylacetic acid and carbendazim mixed liquid to inflorescences; pruning weeds to 50 cm and below in mid-May. The method allows crossbreeding to be carried out in southern low-altitude areas; flowering phase is adjustable, such that chances for making up specific crosses are increased; setting efficiency is high.

The invention belongs to the technical field of rice and shrimp co-cropping, and particularly relates to an ecological rice and crayfish planting and breeding method. The method comprises the following steps of selecting a rice field, heightening and reinforcing ridges of the rice field to enable the ridges to be 42-48cm higher than the plane of the rice field and to be 85-95cm wide; digging annular deep ditches along the inner sides of the ridges to form annular dart target type annular ditches, digging communicating ditches among the annular ditches, arranging crayfish separation nets in the communicating ditches, arranging double-layer escape-proof nets at the side faces of the rice field ridges, and laying sludge among the escape-proof nets; and arranging double-layer protective nets at the inner sides of the ridges, filling sludge, and covering the surfaces with a layer of sludge again. The habit of crayfish drilling can be met, the crayfish growth environment can better meet the requirements of crayfishes, the ridges can be prevented from being damaged and collapsed, the stability and safety of the ridges are enhanced, the double-layer protective nets have a certain fixing effect on the sludge, sludge loss can be reduced, the crayfishes with deeper drilled holes can be trapped on the protective nets, so that the crayfishes are convenient to catch.