70results about How to "Reduce the cost of agricultural production" patented technology

The invention relates to a fermented alga liquid fertilizer synergist and a production method and an application thereof. The fertilizer synergist is a fermented alga liquid fertilizer synergist obtained by performing microbial fermentation on natural alga serving as a raw material, preparing an alga extracting solution through procedures such as alkali extraction, filter pressing and the like, and adding chelated state trace elements into a liquid. Due to the adoption of the fermented alga liquid fertilizer synergist disclosed by the invention, the soil urease activity can be suppressed remarkably, slow release of a fertilizer is enhanced, and the crop yield can be increased remarkably; trace elements such as boron, zinc, manganese and the like which are generally lacked in soil in China can be replenished; root growth of crops can be facilitated, root activity is increased, and the capabilities of crops of absorbing phosphorus, potassium and medium and trace elements are increased; and the fermented alga liquid fertilizer synergist has the characteristics of reduction in nutrient loss, avoidance of secondary pollution, reduction in the production cost of a synergic fertilizer, wide raw material source, convenience for adding in fertilizer production and the like, and has a wide application prospect in the production of the synergic fertilizer.

The invention discloses a method for preparing a lignin urea-formaldehyde pesticide microcapsule. According to the invention, the method comprises the following steps: taking modified lignin, formaldehyde and urea as a monomer, forming a water-soluble performed polymer under base catalysis, diluting and forming continuous phase, forming dispersed phase by pesticide, an organic solvent and a surfactant, mixing and stirring the continuous phase and the dispersed phase to form an oil-in-water emulsion, performing in situ condensation polymerization under the acidic condition, heating and solidifying, pumping filtration and washing, drying to obtain the solid microcapsule particles. The modified lignin is obtained by formaldehyde hydroxymethyl modification of the industrial grade wheat straw soda lignin. According to the invention, the waste wheat straw soda lignin in paper industry is taken as the main wall material, so that the production cost of the microcapsule can be effectively reduced and the resource utilization of waste biomass can be realized. The preparation method of the invention has the advantages of simple process, rapidity and controllable microcapsule particle size, and is capable of realizing the industrial production, increasing the pesticide utilization rate, prolonging the persistent period, minimizing the environmental pollution in the process of agriculturalproduction, reducing the agriculture production cost and the like, and has good market prospect.

The invention provides a biological organic fertilizer which is prepared by fermenting the following raw materials in parts by weight: 20-30 parts of sorghum stalk, 20-30 parts of corn stalk, 20-40 parts of manioc waste, 10-20 parts of plant ash, 10-20 parts of fruit and vegetable waste, 20-50 parts of animal waste, 5-10 parts of EM bacteria liquor, 0.001-0.003 part of cellulase and a proper amount of purified water. The biological organic fertilizer can improve the soil fertility and passivate heavy metals and is good in effect.

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 an agricultural soil water and fertility retaining agent with a sustained release effect and a preparation method thereof. The agent consists of the following raw materials in part by weight: 3 to 6 parts of potassium dihydrogen phosphate, 20 to 40 parts of agricultural water retaining agent particles and 80 to 200 parts of humic acid. The preparation method comprises the following steps of: dissolving the potassium dihydrogen phosphate in water, soaking the agricultural water retaining agent particles in an aqueous solution, adding the humic acid when the particles absorb the water and are expanded to a saturated state, fully stirring to ensure that the humic acid is uniformly coated outside the expanded agricultural water retaining agent particles, drying, and grinding into particles. The agricultural soil water and fertility retaining agent with the sustained release effect has high water and fertility retaining properties and an obvious sustained release effect, is easy to prepare and low in raw material cost and can be widely applied to various crops.

The invention provides a multifunction soil conditioner and a preparation method thereof. The soil conditioner belongs to the soil conditioning and stabilizing materials. The invention in particular relates to the multifunction soil conditioner prepared with the industrial waste residues as the main raw materials. The multifunction soil conditioner is characterized by comprising the following raw material components in dry-basis parts by weight: 15-80 parts of phosphogypsum, 5-60 parts of fly ash and 2-40 parts of phosphate rock powder. The multifunction soil conditioner uses the industrial waste residues including phosphogypsum and fly ash as the main raw materials, changes wastes into valuables, has good adaptability to soil, is suitable for various soil, is convenient to use, low in cost and ideal and has the functions of applying and increasing fertilizers, slow releasing and fixing nitrogen, conserving water and soil, regulating acid and base and inhibiting bacteria and preventing diseases. All the components of the multifunction soil conditioner are accepted by the soil. The preparation method is characterized in that the equipment investment is saved, the preparation process is simple and the manufacturing cost is low.

The invention primarily relates to a multifunctional slow release organic fertilizer containing a heavy metal passivator and a preparation method. The fertilizer comprises the main components: thoroughly decomposed compost, a chemical nitrogen fertilizer, a biochemical inhibitor, a soil heavy metal passivating material, plant growth beneficial elements, a water retaining material and a coating liquid for coating the periphery of the organic particles. The proportion of the thoroughly decomposed compost, the chemical nitrogen fertilizer, the biochemical inhibitor, the soil heavy metal passivating material, the plant growth beneficial elements, the water retaining material and the coating liquid is 1: (0.1-0.3):(0.05-0.1):(0.01-0.2):(0.001-0.02):(0.04-0.08):(0.05-0.1). The fertilizer can reduce bio-availability of heavy metals in the heavy metal polluted soil and reduce adsorption of the heavy metals by crops and increase the content of organic matters in soil and improve the soil fertility, can promote crop growth and enhance water and fertilizer-retaining abilities of the soil, and enhance various functions of crops, for example, disease resistance, drought resistance and the like.

The invention discloses an organic bio-bacterial manure and a preparation method thereof. The organic bio-bacterial manure comprises the following raw materials in parts by weight: 15-20 parts of a lactobacillus plantarum agent, 1-2 parts of a phosphorus releasing bacteria agent, 2-4 parts of a potassium-releasing bacteria agent, 10-15 parts of a bacillus subtilis culture, 8-15 parts of an aspergillus awamori culture, 5-8 parts of polyglutamic acid, 50-100 parts of humic acid, 100-150 parts of organic fertilizers, 80-100 parts of chemical fertilizers and 50-80 parts of bentonite. According to a formula, the organic bio-bacterial manure disclosed by the invention contains the organic fertilizers, is capable of increasing the utilization rate of the chemical fertilizers, improving soil hardening, effectively supplementing organic matters of soil and improving the disease-resistant capacity of crops, and particularly is good in the effect of preventing and treating soil-borne diseases and the continuous cropping disease of the crops due to compound micro-organisms.

The invention relates to a fertilizer special for turnip, in particular to a slow release compound fertilizer special for turnip in a stagger-season vegetable producing area of Bashang plateau in the northwest of Hebei Province. The slow release compound fertilizer consists of active ingredients and auxiliary materials, wherein the active ingredients comprise 16 to 20 weight parts of nitrogen, 8 to 12 weight parts of phosphorous, 12 to 15 weight parts of potassium, 0.1 to 0.4 weight part of boron and an inhibitor in an adding amount which is 1 to 4 weight percent of nitrogen; and the inhibitor is a nitrification inhibitor and a urease inhibitor, the urease inhibitor is hydroquinone or N-(n-butyl)thiophosphoric triamide, and the nitrification inhibitor is dicyandiamide, 3,4-dimethyl pyrazole phosphate, 3,5-dimethyl pyrazole or 3,5-dimethyl pyrazole phosphate. The fertilizer is applied at one time before the turnip is planted, and the fertilizer can meet the requirement of the turnip on nutrients in the whole growth and development process, the turnip has dark green leaves, the yield is high and the nutrient utilization rate is high.

The invention relates to an algae synergistic ammonium phosphate fertilizer and a preparation method thereof. The ammonium phosphate fertilizer comprises the components in parts by weight as follows: 0.05-2.0 parts of an algae synergistic agent and 98.0-99.95 parts of ammonium phosphate. The content of alginic acid accounts for 0.0125%-0.5% of the total weight of the ammonium phosphate fertilizer. Compared with common ammonium phosphate, the algae synergistic ammonium phosphate has the characteristics of good yield-increasing effect, high nutrient utilization rate and avoidance of secondary pollution, environment-friendliness as well as simple production technology, low cost, wide raw material resource, easiness in operation, benefit to industrial application and the like.

The invention relates to an algae synergistic high-tower compound fertilizer and a production method thereof. The method comprises the steps of algae synergist preparation, urea melt liquid preparation, preprocessing of other fertilizers, pelleting and the like. The algae synergistic high-tower compound fertilizer can increase the crop output, improve the utilization rates of the fertilizers, reduce nutrient loss and avoid secondary pollution through the crop growth promoting function of active ingredients in a algae synergistic liquid, the inhibiting effect for soil urease, and the influence on urea chemical valence characteristics and the anti-fixation function for phosphorus and potassium. According to the algae synergistic high-tower compound fertilizer, secondary processing doesn't exist; the fertilizer has the characteristics as follows: sources of raw materials are wide, the fertilizer is not air-slake and can be transported and applied conveniently, the production process is simple, the cost is low, industrial application is facilitated, and the like; and the fertilizer has a wide application prospect in production.

The invention relates to a vertical farm ecological circulation system comprising a multilayer vertical farm, a dividing wall rotary kiln, a carbon dioxide energy storage supply unit, an oxygenator, a power generator and a retorting gas separation unit; the multilayer vertical farm is provided with 1-1000 layers of racks, nutrient solution supply ports, straw collection transferring units, and carbon dioxide inlets; the straw collection transferring units are connected with the dividing wall rotary kiln; the dividing wall rotary kiln discharge ring is connected with a solid fuel burner; retorting gas outlets are connected with the retorting gas separation unit; condensed water outlets of the retorting gas separation unit are connected with a nutrient solution preparation tank; a smoke outlet of the power generator is connected with the carbon dioxide inlets; a burner ash outlet is connected with a dissolution tank; a dissolution tank outlet is connected with the nutrient solution preparation tank; nutrient solution supply ports are connected with the nutrient solution preparation tank. The vertical farm ecological circulation system can utilize various resources of the vertical farm in a recycle manner, thus effectively improving resource utilization rate, increasing vertical farm grains and other plants yield, and reducing agriculture production cost.

The invention provides a bacterial strain B1 for converting an insoluble phosphate into a soluble phosphate, which belongs to the technical field of biology. The scientific name of the bacterial strain is bacillus thuringiensis which is preserved in the general microorganism center of China Committee for Culture Collection of Microorganisms on 15th, March, 2011, and the preservation number is No.4665. The bacterial strain employs the insoluble phosphate as the phosphorus source, and the insoluble phosphate can be converted into the soluble phosphate, the effective phosphor content in the soil can be effectively raised. The bacterial strain is directly inoculated into the soil with good survivability, and the effective phosphor content in the soil can be effectively raised. According to the invention, the bacterial strain has the advantages of low production cost, convenient usage and good soil survivability, and is suitable for an inoculation test in phosphate deficiency soil. The invention has significance for reducing the agricultural production cost.

The invention discloses a citrus laccase family gene CsiLAC4 and application thereof and belongs to the technical field of plant genetic engineering. A method for obtaining the citrus laccase family gene CsiLAC4 comprises the following steps: extracting total RNA (Ribonucleic Acid) from citrus leaves; (2) carrying out reverse transcription on the RNA obtained in the step (1) so as to obtain cDNA (Complementary Deoxyribonucleic Acid); (3) by taking the obtained cDNA as a template, carrying out a first round of PCR (Polymerase Chain Reaction) amplification by using a forward primer F1 and a reverse primer R1; (4) by taking an amplification product of the first round as a template, carrying out nest type PCR amplification by using the forward primer F1 and a reverse primer R2, thereby obtaining the citrus laccase family gene CsiLAC4. The citrus laccase family gene CsiLAC4 is adopted to improve the boron toxin resistance of plants, and provides new gene resources for abiotic stress resistant molecule breeding of plants.

The invention relates to an organic matter sustained-release urea and a preparation method thereof. A technical scheme adopted in the invention is characterized in that the total nitrogen content by weight is 40-46; the content by weight of lignin by calcium lignosulfonate is 0.3-1.5; the content by weight of methylenediurea by HCHO is below 0.6; the pH value is 5.0-7.0; and the preparation method comprises a step (1) of preparing raw materials comprising solid raw materials and liquid raw materials, and a step (2) of carrying out coating granulation. The adsorption sustained-release property of lignin realizes the good maintenance of the effectiveness of chemical fertilizers and the sustained-release of the chemical fertilizers, so the organic matter sustained-release urea is a good organic composite fertilizer material; and the exploitation researches of the lignin realizes the comprehensive utilization of natural high-molecular resources, the treatment of the environment pollution caused by the papermaking industry, the solving of the loss and pollution problems in the use process of common fertilizers, and the provision of a new product for the reduction of the agricultural production cost.

The invention relates to a sowing machine capable of rotary tillage and fertilization of grain seeds. The sowing machine comprises a rack, a power input shaft, a speed changing box, a traction frame, a seed box, a fertilizer can, a seed opener, a rotary blade, a deep scarification fertilization shovel and a press wheel. The seed box and the fertilizer can are installed at the upper part of the rack, and the seed opener, the rotary blade, the deep scarification fertilization shovel and the press wheel are installed at the lower part of the rack. A centrifugal fan is arranged on the sowing machine capable of rotary tillage and fertilization of the grain seeds, and is provided with an impeller, a fan shaft, an exhaust opening and an air outlet, and a power delivery shaft is connected with the fan shaft by the speed changing box. A seed metering device has a cylindrical structure and comprises a wind blocking circular tube and an outer cylinder of the seed metering device, which are installed in a matching manner. The wind blocking circular tube is provided with a fan-shaped air draft area, seed absorbing holes are formed in the outer cylinder of the seed metering device and are corresponding to the fan-shaped air draft area. The wind blocking circular tube is connected with the exhaust opening by a bent pipe and an air conveying tube. The sowing machine is suitable for the precise sowing, deep scarification and rotary tillage as well as deep placement of fertilization of various particle seeds and has multiple functions, and according to the sowing machine, the tillage efficiency of crops is improved, and the agricultural production cost is lowered.

The invention discloses a slow-release fertilizer special for ecological wheat and a preparation method thereof. The slow-release fertilizer special for ecological wheat is prepared from, by weight, 15-22% of urea, 28-36% of monoammonium phosphate, 17-24% of potassium chloride, 8-14 % of ammonium nitrate phosphate, 1-3% of phosphoric acid, 2-5% of liquid ammonia, 1-3% of concentrated sulfuric acid, 4-10% of modified tapioca flour, 0.2-0.5% of fertilizer synergist, 3-5% of microelement fertilizer and 1-8% of auxiliaries. The slow-release fertilizer special for ecological wheat can supply sufficient nutrients to wheat, nutrient supply is lasting and coordinated, release of nutrient elements can be controlled, one-off fertilization can be achieved without topdressing, meanwhile, soil pollution cannot be caused, the quality of wheat is remarkably improved, and the yield of wheat is remarkably increased.

The invention relates to an algae synergistic ammonium bicarbonate fertilizer and a production method thereof. The ammonium bicarbonate fertilizer comprises the components in percentage by weight as follows: 0.15%-0.80% of an algae synergist and 98.20%-99.85% of ammonium bicarbonate, and the content of alginic acid accounts for 0.0375%-0.2% of the total weight of the ammonium bicarbonate fertilizer. Compared with common ammonium bicarbonate, the algae synergistic ammonium bicarbonate has the characteristics of good yield-increasing effect, high nutrient utilization rate and avoidance of secondary pollution, environment-friendliness as well as simple production technology, low cost, wide raw material resource, easiness in operation, benefit to industrial application and the like.

An intelligent integrated processing device for biomass straw fertilizer comprises a box with the upper end open, a shell is fixedly mounted on the inner bottom surface of the box, the bottom surfaceand the top surface of the shell are both open, a first through hole communicating with the interior of the shell is formed in the bottom surface of the box, a crushing roller in a front-back direction is mounted at the upper part in the shell through a bearing, a fifth power device for driving the crushing roller to rotate is arranged in the box, a feeding hopper is fixedly installed at the upperend of the shell, the upper end of the feeding hopper is flush with the upper end of the box, and the left side of the feeding hopper is fixedly connected with the left side of the box. The intelligent integrated processing device integrates soil shoveling and turning, biomass straw collection and treatment, seeding, fertilization and water spraying, stirring blocks in a semispherical shell shapeand a screw conveyer are used to cooperate to continuously convey seeds into a first sleeve, a netted chain plate is used to spread and scatter crushed biomass straw and shoveled soil above the seeds, and seed germination and fermentation of the crushed biomass straw into fertilizer can be effectively promoted in combination with a water spraying device.

The invention discloses a manufacturing method of a composite granular slow-release siliceous fertilizer. The manufacturing method comprises the following: (a) mixing process: liquid blast furnace slag in a slag tank is poured into a tundish at the flow rate between 0.1 and 0.5 ton / minute, and carbonate is continuously fed in the tundish through a pipe at the same time; (b) granulation process: reacted melted siliceous fertilizer flows out from the outlet arranged on the sideface of the tundish under the action of gravity; moreover, the lower part of the tundish is provided with compressed air and industrial steam which blow the melted siliceous fertilizer to a cooling chamber to form wet granular siliceous fertilizer which is finally dried to form dry granular siliceous fertilizer by means of the heat of the wet granular siliceous fertilizer. Compared with the prior art, the manufacturing method, which has short production cycle, low energy consumption, less equipment investment and more than 50 percent reduction in production cost, is easy to realize mass production.

The invention provides a safe environment-friendly acaricide. The formula of the acaricide comprises the following components in weight percentage: 1.0-10.0 percent of ethoxylated lauryl alcohol sulfates, 1.0-10.0 percent of coconut acid glycol amide, 1.0-10.0 percent of sodium dodecyl benzene sulfonate, 0.5 percent of NaOH, 1.0 percent of salt, 0.1-0.5 percent of Kathon and 68-95.4 percent of water; the best formula comprises the following components in weight percentage: 5 percent of ethoxylated lauryl alcohol sulfates, 5 percent of coconut acid glycol amide, 4 percent of sodium dodecyl benzene sulfonate, 0.5 percent of NaOH, 1.0 percent of salt, 0.2 percent of Kathon and 84.3 percent of water. The acaricide only takes the action of contace poison on the larvae of insects and mites, hasthe function of controlling fungous and bacterial diseases and has no toxin on other animals of people, fowls, beasts and the like. Grain, fruits and vegetables applying the reagent do not have pesticide residues, and therefore, the acaricide can be applied at any time and the grain, the fruits and the vegetables can be eaten at any time. By using the acaricide to control the harmful mites, the labour strength of fruit farmers can be relieved, the agricultural production cost can be reduced and the pollutions of pesticide to the environment can be reduced to let consumers have ease food. The popularization and the application of the reagent have good social benefits and huge economic benefits.

The invention provides a long-acting mineral selenium-enriched fertilizer, comprising fly ash and zeolite; the Se content in the fly ash is 27.9~36.3mg.kg ‑1 The preparation method comprises the following steps: grinding and processing zeolite into zeolite powder with a particle size below 200 mesh; grinding and processing fly ash into fly ash powder with a particle size below 200 mesh; Mix and stir evenly; spray salt water with a mass concentration of 5% on the mixture, and then make the mixture after spraying salt water into spherical particles with a diameter of 1~1.5mm; bake at 430~450°C until the water content reaches More than 5%; finished product packaging, the present invention can make soil and crops reach selenium-enriched level, effectively utilize coal-fired fertilizers, and be highly efficient and environmentally friendly.

The invention discloses a dynamic variable speed optimization control method considering efficiency of an HMT (hydraulic mechanical transmission). The dynamic variable speed optimization control method considering the efficiency of the HMT includes: by calculating a hydraulic power split ratio rho<h> of an HMT drive system and efficiency of the HMT in mechanical-hydraulic double current driving, confirming a discharge ratio of a pump in the HMT drive system when the mechanical-hydraulic double current driving efficiency is maximum. By regulating the discharge ratio of the pump in the HMT drivesystem, the dynamic variable speed optimization control method considering the efficiency of the HMT enables the HMT drive system to keep working at the maximum driving efficiency moment all the timewhen the HMT drive system is in the mechanical-hydraulic double current driving, thereby improving dynamic performance of the HMT drive system.

The invention discloses a weed killer composition with the function of broad-spectrum weeding, and relates to the technical field of agricultural production. The composition disclosed by the invention consists of effective constituents, emulsifiers and solvents, and is in the dosage form of missible oil. The composition is characterized in that the effective constituents of the composition are cyhalofop-butyl and pyriminobac-methyl. The cyhalofop-butyl and the pyriminobac-methyl are compounded in the composition, so that the composition has the function of high-efficient and broad-spectrum weeding, the weeding scope is extended, and the control effect for barnyard grasses, semen euphorbiae, sedges, convexutricle sedge herbs, heleocharis plantagineiformis, sagittaria pygmaea, alternanthera philoxeroides and four-peduncles four-circumference paspalum distichum, and the like in direct seeding paddy fields is good, and better than that of using two single dosage varieties of the cyhalofop-butyl and the pyriminobac-methyl. The composition can be widely used for preventing and killing off various weeds in the rice direct seeding fields.

The invention discloses a facility intelligent temperature difference regulation and control system and method based on a tomato growth evaluation system, wherein the facility intelligent temperaturedifference regulation and control system comprises a temperature monitoring module, an intelligent temperature control module, and temperature adjustment equipment, and the temperature monitoring module and the temperature adjustment equipment are electrically connected with the intelligent temperature control module. The temperature monitoring module is used for measuring facility temperature inreal time and transmitting data; the intelligent temperature control module is used for receiving data measured by the temperature monitoring module and sending an instruction to the temperature adjustment equipment, and the temperature adjustment equipment is used for starting night temperature increasing management or cooling management according to the instruction sent by the intelligent temperature control module. The facility intelligent temperature difference regulation and control system and method based on the tomato growth evaluation system have the advantages that reasonable controlover the day and night temperature difference in the tomato seedling stage is achieved, use of growth regulation and control agents is reduced, strong seedlings are cultivated, excessive growth is prevented, and fertilizer and pesticide saving and efficient and clean cultivation of facility tomatoes are achieved.

The invention relates to leaf fertilizer for improving the capability of selenium enrichment of potherb mustard, and belongs to the technical field of agricultural leaf fertilizer. The leaf fertilizer adopts the formula that water of 15 kg, glutamic acid of 1-20 g, lysine of 1-35 g, leucine of 1-15g, histidine of 1-20 g, methionine of 15-50 g, cystine of 1-35 g, threonine of 1-40 g, phenylalanine of 1-35 g, serine of 1-40 g, VC of 0.01-40 mg, VE of 0.01-40 mg, VB1 of 0.01-50 mg, VB6 of 0.01-40 mg, VB12 of 0.01-40 mg, potassium oxide of 1-60 g and a coenzyme II of 0.01-2 g are uniformly stirred. The invention has the advantages that exogenous selenium is not needed, the formula is simple, the preparation is easy, the leaf fertilizer facilitates enhancing the capability of selenium enrichment of potherb mustard, enables the selenium content of potherb mustard to reach the selenium enrichment standard of 0.01 mg / kg, and the use cost is 50-70 yuan / mu; besides, the antiviral performance and stress resistance of potherb mustard can be improved, the agricultural production cost and environmental pollution can be reduced, and excellent economic and ecological benefits are obtained.

The invention discloses a cotton defoliant compounded from iso-PhABA and thidiazuron. The defoliant comprises iso-PhABA and thidiazuron in the mass ratio being (0.01-30):(5-70). The dosage form of thedefoliant comprises (but not limited) wettable powder, water dispersible granules or a suspension concentrate. The components are compounded reasonably and show a certain synergistic function, so that the defoliant has an excellent defoliation effect and shows better ripening acceleration and boll opening effects, and the yield and quality of cotton can be improved. Meanwhile, the defoliant contains no herbicides and ethephon components, and soil environment pollution and residues caused by heavy use of chemical defoliants and ethephon are reduced.

A nano-class tolclofos-methyl microemulsion is prepared from tolclofos-methyl 5-25 wt.%, non-ionic surfactant 5-15 wt.%, anionic surfactant 5-15 wt.%, solvent and water 10-30 wt.%. Its nanoparticles result in the great improvement of its properties. Its advantages are high chemical activity, fast absorption, strong target action, low dosage and low environmental pollution.

The invention discloses nutrient slow-release tape which comprises a substrate, slow-release microcapsules, nutrients and a colloid, wherein the substrate is a mixture of polyethylene and gauze; the slow-release microcapsules are fixed on the surface of the substrate; the nutrients are wrapped in the slow-release microcapsules; the colloid is acrylic glue. According to the technical scheme, the loss rates of fertilizer and nutrient solutions during agricultural production can be lowered through adoption of the nutrient slow-release tape; the nutrients are slowly released through the slow-release microcapsules, so that the absorbing capacity of crops is improved, the agricultural production cost is reduced, and the pollution of chemical fertilizer to surroundings is reduced.