226results about How to "Saving water for irrigation" patented technology

A network-type multifunctional autoamtic irrigation method features that the irrigation is quantitatively and timely performed according to the moisture of soil and its management system software module is designed, which contains initial parameters, autoamtic operation, random operation, operation state, history data, and failure alarm and treatment. The system is composed of PC, central controller, communication repeater, and sampling controller. It can be used in the-range of 1-5 km.

The invention discloses a functional rainwater garden applicable to a sponge community. The functional rainwater garden comprises a pre-percolation layer, a water storage layer and an overflowing facility, wherein the pre-percolation layer comprises an annular edge slope arranged at the periphery of the garden; a zeolite-active carbon filtering system is laid on the annular edge slope; a part, far away from the garden, of the annular edge slope is higher than a part close to the garden; the water storage layer comprises a covering layer, a planting soil layer, a percolation layer and a filling layer which are arranged in sequence from top to bottom; an overflowing pipe of the overflowing facility penetrates into the water storage layer along the vertical direction; an overflowing hole of the overflowing facility is higher than the water storage layer. According to the functional rainwater garden, a multi-grade percolation system composed of the pre-percolation layer, an active carbon layer and the water storage layer has the effects of filtering, precipitating, permeating and adsorbing rainfall runoff, carrying out ion exchange, biodegradation and plant absorption and the like, and pollutants including heavy metal, organic matters, nitrogen and phosphorus and the like in the runoff are reduced, so that absorption and purification of the runoff are realized; water for greenbelts is reduced, and urban waterlogging and municipal drainage pressure are alleviated; a heat island effect is alleviated and an ecological city is constructed.

The invention relates to a light, simple and efficiency cultivation method for cotton. Straw-like light seedling raising medium is filled in paper cylinder and pot or paper plug or nonwoven fabric bags for raising cotton seedlings, and mechanical sowing, transplanting and cotton harvesting can be performed. The light, simple and efficiency cultivation method has the characteristics of labor conservation, cost conservation, high yield and high efficiency, requires small investment, makes operation easy, avoids environment pollution and is a new method for large-scale cotton production with bright promotion and application prospects.

The invention discloses a production method and application of sandy land conditioner made from bentonite. The production method and application include the steps of firstly, purifying and modifying bentonite, and adding special additive to produce sandy land conditioner; secondly, manually or mechanically evenly scattering the sandy land conditioner to sandy soil surface of leveled sandy land, dry farmland or arid farmland; thirdly, using a rotary tiller to perform rotary tillage so as to evenly mix the sandy land conditioner and the sand soil inside topsoil; and fourthly, fully irrigating with water to enable the sandy land conditioner to absorb water and turn adhesive so that the sandy land conditioner is well combined with the sand soil to form soil aggregates, thereby achieving water saving, water holding, fertilizer holding, wind proofing and sand stabilization and increasing yield of planted crops. The sandy soil conditioner is mainly used for modifying sand soil, dry farmlands and arid farmlands, and can also be used for modification of saline-alkali soil, impoverished soil, yellow mud soil and easily caking soil, desertification control and various sand stabilizing projects. The sandy land conditioner is more effective in application to rice planting.

The invention provides an ecological grass planting trench for cities with rich water resource, which is arranged on one side of a sidewalk road. The ecological grass planting trench sequentially comprises a vegetation layer, a planting soil layer, a building block brick layer, a water permeating and discharging pipe and a gravel layer from top to bottom. The ecological grass planting trench is arranged on one side of the sidewall road and used for collecting rainfall running water on the sidewall road, the pollutants in the running water can be reduced, and a purpose for locally purifying the running water and controlling the pollution of the running water can be achieved; the ecological grass planting trench is arranged between the sidewall road and a green land, so that not only is the landscape not influenced, but also convenience in construction can be realized; the rainfall running water is stopped in the gravel layer and gradually and slowly permeated, finally the water content of the soil of the green land is replenished, the rainfall running water can be completely absorbed and purified, and the water for irrigating the green land can be reduced; the lower end of the water permeating and discharging pipe is connected with a rainy water opening or a rainy water well, the other end of the water permeating and discharging pipe is closed, so that the collected rainfall running water on the sidewalk road can be collected into the rainy water opening or the rainy water well, and a purpose for reducing the rainfall running water and postponing the flood peak can be achieved.

The invention relates to a modular multifunctional roof greening device, which is assembled by a base plate arranged on the top surface of the roof, a hollow communicating pipe, a strip clamp and a cross clamp; hollowing footings are distributed evenly at the bottom of the base plate, and reinforcing ribs are arranged on the inner wall and the soleplate of the base plate; the middle part of the base plate is provided with a square groove which is communicated with draining holes at the four sides of the base plate; a portal cover plate is sheathed and inserted at the upper end of the square groove, the two sides of which are provided with an overflow hole and card slots arranged at the two sides of the overflow hole; a filtering box is inserted in the card slot; and a slot used for placing a water level regulating board is arranged in the square groove. The modular multifunctional roof greening device has simple manufacture and fast construction, can be used for planting flowers, grass and trees, etc., has high survival rate of plants, obvious water-saving and convenient maintenance and management, can be used for greening of the roof, can also be used for room greening and stereoscopic agriculture, etc. and has multiple actions of protecting the roof of buildings, greening the city space, insulating heat, keeping the temperature, preventing water and collecting and using the rainwater.

The water-preserving agent for desert zone is made of inorganic powder material and coupling agent according to the weight ratio of 100:0.5-2.5, the described inorganic powder body material is any one of calcium carbonate, magnesium carbonate, talcum powder, pottery clay, wollastonite, coal gangue, flyash, diatomaceous earth or desulfurized gypsum or their any combination, and the described coupling agent is any one of coupling agent of organic titanate, RCA modifying agent, aluminate coupling agent, phosphate coupling agent or silane coupling agent.

The invention provides a cultivating method of sugarcanes. The cultivating method comprises the following steps: (1) excavating a draining ditch at space of 10-15 meters along the vertical direction of a planting ditch according to 1.20-1.40 m line space; (2) applying fertilizer: evenly mixing long-effect urea, potassium chloride and mixed organic nature fertilizer and applying to the planting ditch; (3) placing sugarcane straws at the bottom part of the planting ditch, applying vermifuge, and covering smashed soil to form a turtle back shaped soil ridge; (4) spraying pre-emergence herbicide and covering new ground membrane; (5) covering telescopic plastic cover at the ridge slope between lines; (6) respectively arranging a small dam at each end of every section of planting ditch to accumulate water; when soil is not lack of water, opening the dam to discharge water; (7) when the sugarcanes need to earth up in elongation stage, removing the plastic cover out of the sugarcane field, peeling off the ground membrane, and then covering the plastic cover between the sugarcane lines after earthing up; after closing the sugarcanes, recycling and storing the plastic cover. The cultivating method collects rainwater and controls grass, and can irrigate and discharge; the rainfall is reasonable used; the cultivating method is free from water shortage and waterlogging and not delays the farming season; besides, the cultivating method saves labor and increases output.

The invention relates to a method for planting trees in a desert environment. The method includes steps of a, laying mulching films on side walls and bottoms of planting holes; b, soaking all parts of roots of the trees in rooting powder solution and then placing the roots of the trees in the planting holes; c, filling grass carbon soil and earth surface soil mixtures into the planting holes; and d, enclosing the trees by barrages and watering the trees. Tree species suitable to grow in the desert environment are selected to mainly solve the problem of low survival rate of nursery trees in the desert environment, and the trees are planted in different locations of a desert according to characteristics of the different tree species, so that survival of the trees is guaranteed, the characteristics of the trees are sufficiently played, the trees can normally grow, the characteristics of sand prevention and water retention of the trees can be played, and the method has the advantages of simplicity, wide material source, low manufacturing cost and high survival rate of nursery trees.

The invention discloses a device and a method for quality-based rainwater collection, treatment and utilization. The device comprises an early-stage rainwater pond (1), an early-stage rainwater treatment plant bed (2), a middle-later-stage rainwater enhanced treatment bed (3) and a clean water pond (4) which are arranged under the ground, wherein the upper part of the early-stage rainwater pond (1) is communicated with the middle-later-stage rainwater enhanced treatment bed (3), the lower part of the early-stage rainwater pond (1) is communicated with the early-stage rainwater treatment plantbed (2) and the middle-later-stage rainwater enhanced treatment bed (3) is communicated with the clean water pond (4). The separation of seriously polluted early-stage rainwater and middle-later-stage clean rainwater is realized. By confining the early-stage polluted rainwater in the early-stage rainwater pond, the middle-later-stage clean rainwater is prevented from being polluted. On the basis of further enhanced treatment of the middle-later-stage clean rainwater, the rainwater is collected and stored and is used for greenery irrigation, road sweeping and the like. The resource utilizationof the rainwater is realized and the water resource is saved.

The present invention relates to a water-saving cultivation method of multicrop water dropwort. Said method includes the following steps: making the water dropwort seedstem be budded, applying organic fertilizer in greenhouse, after the seedling is rooted, covering with plastic film, heat-insulating, when the water dropwort is grown to 20-50 cm, harvesting and remaining 1 cm stub, the applying quickly-acting fertilizer to make plant short stem sprout and form new seedling, promoting growth of new seedling and making secondary harvest.

The invention relates to a biodegradable liquid mulch film produced from papermaking waste liquid, and a production method thereof. The film is produced from papermaking waste liquid discharged from paper making industries, starch, polyvinyl alcohol, acrylic acid or methacrylic acid or acrylamide, amyl acrylate or octyl acrylate, formaldehyde or glutaral or glyoxal, and the like. According to the method, lignin is grafted with acryl; starch is grafted with acryl; lignin, starch and polyethylene glycol hydroxyl are processed through a series chemical reactions of condensation, cross-linking, and copolymerization, such that an aqueous polymer with lignin as a basic material is synthesized. Therefore, the biodegradable liquid mulch film is obtained. According to the invention, industrial papermaking waste liquid is adopted as a main material, such that the pollution caused by papermaking waste liquid is reduced, environment is protected, cost is saved, irrigation water is saved, and crop yield is improved. With the wide popularization of the biodegradable liquid mulch film, a positive effect is provided for increasing the crop yield in our nation.

The invention discloses a water cycling cultivating device for fish and vegetables commensalism and a water cycling cultivating method. The device includes a microbial decomposition filter tank, a plant cultivation pond, an aquatic animal breeding pond, a water cycling system, a biological filler, a light-supplementing system and a water pump, wherein the aquatic animal breeding pond is positioned at the lowermost end of the device; the plant cultivation pond is arranged at the middle part of the device; the microbial decomposition filter tank is positioned at the uppermost of the device; the microbial decomposition filter tank, the plant cultivation pond and the aquatic animal breeding pond are connected with one another in a two-by-two manner through the water cycling system; the water body in the system flows from the aquatic animal breeding pond to the microbial decomposition filter tank and the plant cultivation pond successively, and then flows back to the aquatic animal breeding pond. Compared with the conventional cultivation method, the device provided by the invention has the advantages that the growth cycle of the plant cultivated in the device is shortened by 10-20%, the irrigation water is saved by 90%, and the agricultural land is saved by 50%.

The present invention discloses a system used for plant root system infiltrating irrigation and soil drainage, and aims to solve the problem of water resource waste and poor irrigation effects of conventional irrigation methods. The system comprises a water collecting pipe and a water drainage belt disposed on the water collecting pipe and used for guiding water into or out of the water collecting pipe, two ends of the water collecting pipe are provided with a water inlet valve and a drainage control valve, the water drainage belt is a belt-shaped member and is disposed under the ground, and at least one side of the water drainage belt is provided with a plurality of small-bore water collecting and draining troughs which are arranged in a spaced manner along a belt width direction and extend along a belt length direction in an overall length manner. With coordination of the water collecting pipe and the water drainage pipe, water flows in the water collecting pipes are guided nearby roots of the plants through the water drainage belt, so as to directly irrigate a plant root system. Residual water of soil at the root areas of the plants can also be drained, thereby realizing plant root system infiltrating irrigation and soil drainage function.

The invention discloses a method of cultivating rice by layer construction and utilization of straw and soil and solves the problems of crop stalk returning, soil aeration and water-fertilizer coupling. The method includes the steps of 1, performing a bed-furrow project on a rice field for the whole year; 2, performing moisture management before each season of crop harvesting; 3, treating stalks of crops of each season; 4, clearing beds and furrows and spreading soil; 5, planting crops; 6, performing field management; 7, harvesting the crops. The method has the advantages that the soil arable layer structure is changed, and a mud layer, a straw layer and a soil layer are formed from top to bottom; the method is good for deeply placing chemical fertilizers and improving availability of the fertilizers; water content of bed soil is decreased, soil aeration is improved, and availability of natural rainfall is improved; the rice field production process is free of tillage, straw burning and field steeping, ecological benefits are significant, operational energy consumption is reduced, haze is decreased, and irrigation water is decreased.

The invention discloses a double-cropping rice based ecological ditch cultivation method for triple-cropping winter crops, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch cultivation method includes the steps of 1), executing ditching engineering in a late rice field; 2), performing water management before harvesting late rice; 3), treating late rice stalks; 4), utilizing a chained ditcher to clean ditches and spread out mud; 5), planting winter crops; 6), performing field management; 7), harvesting the winter crops. The double-cropping rice based ecological ditch cultivation method has the advantages that an arable layer structure of soil is changed; full amount field returning and deep burying treatment of the crop straws can be realized at one step, and meanwhile, fertilizer is deeply applied, utilization rate of the fertilizer can be increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage and non-straw burning of the winter crops are realized, and ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced.

The invention relates to a retaining wall for constructing a sponge city and a construction method of the retaining wall. The retaining wall is a wall with a concrete structure, a solar power system is arranged on the top of the retaining wall, planters are arranged on the outer side of the retaining wall, a water delivering tube, a water collecting tube and a water drawing tube are arranged in the wall, a reservoir is arranged under the wall, a water pump is arranged in the reservoir and is connected with the water drawing tube, and meanwhile, the reservoir is connected with a drainage system of the city. Solar energy which is a huge amount of energy is fully used, and the retaining wall is skillful in design and convenient to construct, and is used for constructing the intelligent sponge city.

The invention discloses a method for preparing liquid fertilizer for saline and alkaline land irrigation from biogas slurry. The comprehensive utilization value of the biogas slurry is remarkably improved through a three-time anaerobic fermentation process, high-valued and innocent treatment and resource utilization of the biogas slurry are achieved, the biogas slurry is used for agricultural development of saline and alkaline land, and the grain yield increase capacity of the saline and alkaline land is improved. The liquid fertilized prepared through the technology has a slight tart flavor, has no stink smell, and contains rich nutrient elements, amino acid, humic acid, auxin, hydrolase, vitamin, probiotics and other bioactive substances, wherein the index of the content of microorganisms reaches 109,000,000,000 / mL, and the pH ranges from 6.0 to 6.5. When the liquid fertilizer is applied to improvement in the saline and alkaline land, the physical and chemical structure of salinity soil can be remarkably improved, soil aggregate is increased, soil permeability is improved, soil fecundity is improved, and the grain yield increase capacity of the saline and alkaline land is improved. The liquid fertilizer is an excellent soil modifier and an excellent crop growth accelerant and is ideal fertilizer for saline and alkaline region soil improvement for grain yield increase.

The invention provides a water storage-type city road isolation belt having ecological purifying function. The water storage-type city road isolation belt comprises a U-shaped water permeable tank, curb bricks, discharge drains, discharge drain cover plates, an ecological purifying case and plants. The U-shaped water permeable tank is arranged below the center ground of the isolation belt, plants are planted in the U-shaped water permeable tank, the curb bricks are arranged at two sides of the upper surface of the U-shaped water permeable tank; the discharge drains are arranged at two sides of the U-shaped water permeable tank; the discharge drain cover plate is arranged at the top of the discharge drain; and ecological purifying case is arranged at one side of the bottom of the discharge drain close to the U-shaped water permeable tank. The apparatus has safety protection function as the common road isolation belts, can effectively degrade the pollutant carried by raining flow on the pavement, reduces the burden of downstream sewage processing, has water storage and soil moisture retention functions, prolonging the plant maintenance period for the road isolation belt, and saves the water used for irrigation. The road isolation belt has the advantages of simple manufacture, low cost, and convenient enforcement, and is suitable for all kinds of the city roads.

The invention discloses an efficient manual cistanche inoculation method and a hollow drill for manual cistanche inoculation. The efficient manual cistanche inoculation method comprises the following steps of: (1) processing and carrying out quality detection of cistanche seeds; (2) preparing special nutritional soil containing cistanche; (3) preparing seed serous; and (4) drilling on soil, pressurizing and injecting the seed serous into soil holes, and compacting the soil in the holes, thus completing plantation. The hollow drill for the manual cistanche inoculation comprises a hollow drill shaft, a spiral drill coat, a feeding coat and a fixed drill handle. The efficient manual cistanche inoculation method has the advantages of extremely small soil excavation volume, small damage on root systems of host plants, high inoculation speed, low labor cost, irrigation water saving and high inoculation survival rate, thus being applicable to the condition of industrialization and scale plantation of haloxylon ammodendron and the cistanche.

The invention discloses a method for planting grapes in a northwest arid region. The method mainly comprises the following steps of (a) nursery-grown plant preparation: digging out propagated grape nursery-grown plants and treating the nursery-grown plants; (b) digging of planting furrows: digging the planting furrows before freezing up of the ground in an early winter; (c) backfilling of the planting furrows: filling straws, organic fertilizers and mellow soil in the dug planting furrows; (d) film covering: smoothening the planting furrows after backfilling, watering and settlement and covering the planting furrows by using mulching films; (e) nursery-grown plant planting: planting the treated nursery-grown plants in the planting furrows; and (f) soil covering: covering the planted nursery-grown plants by using fine grained soil with the thickness of 7-8 centimeters. Compared with the prior art, the method for planting the grapes in the northwest arid region has the advantages that grape seedlings planted in the northwest arid region are robust and the yield is high.

A cold-proof vertical greening device is characterized in that a flowerpot body provided with two cavities and a profile used for holding the flowerpot body are included, and the profile is of a C-shaped steel shape and is provided with folded edges turning outward to form two symmetric guide rails; the flowerpot body comprises a planting cavity and a heat storage cavity, the two cavities are isolated through a partition board, and grooves capable of containing the profile guide rails are formed in the combination portions of the outer surfaces of the two sides of the planting cavity and the heat storage cavity; a part of the heat storage cavity of the flowerpot body is contained in the profile; the guide rails of the profile are provided with a transparent slide cover of the same shape as the planting cavity, the transparent slide cover is arranged outside the planting cavity, longitudinal edges of the transparent slide covers are embedded in the guide rails of the profile, and a structure capable of surrounding the planting cavity and sliding up and down along the guide rails is formed. The cold-proof vertical greening device is simple in structure, convenient to install, especially in winter, heat preservation and winter protection of building walls and plants can be achieved at the same time, and good growth environment and ornamental environment of the plants are guaranteed.

The invention discloses a double-cropping rice based ecological ditch direct-seeding cultivation method for triple-cropping late rice, aiming to solve the problem about crop straw returning to field, soil aeration and water and fertilizer coupling. The double-cropping rice based ecological ditch direct-seeding cultivation method includes the steps of 1), executing ditch engineering in an early rice field; 2), performing water management before harvesting early rice; 3), treating early rice stalks; 4), allowing a chained ditcher to clean ditches and spread out mud; 5), directly seeding late rice; 6), performing field management; 7), harvesting the late rice. The double-cropping rice based ecological ditch direct-seeding cultivation method has the advantages that an arable layer structure of soil is changed; deep application of fertilizer is benefited and utilization rate of the fertilizer is beneficially increased; water content of ditch soil is lowered, soil aeration is improved, and utilization rate of natural precipitation can be improved; no-tillage, no-stubble cleaning, no-straw burning and no-filling and soaking of field water of the late rice transplanting are realized, ecological effect is obvious in that operation energy consumption, haze and irrigation water can be reduced, and pesticide stubble cleaning is omitted.

The invention discloses an oilseed rape and wheat stubble hybrid rice water saving direct sowing cultivation method based on smashing, burying and retuning to field of preceding crop straw, wherein the cultivation method combines agricultural machinery with the agricultural technology closely. Appropriately-precocious, high-yield, stress-resistant and high-quality rice and oilseed rape or wheat varieties are selected, after the oilseed rape or wheat is mature, straw smashing during machine harvesting or separate straw smashing after harvesting is adopted, the smashed straw is buried in the field through mechanical farming, direct sowing of hybrid rice is carried out through sowing machines or workers under non-irrigation conditions, emergence and growth of rice seedlings are guaranteed under non-basin irrigation conditions, field management measures similar to normal rice cultivation are not taken until the three-leaf stage of the rice seedlings, and the yield equal to or higher than that of local seedling raising and transplanting rice under equal conditions is obtained finally. The hybrid rice water saving direct sowing cultivation method based on smashing, burying and retuning to field of the preceding crop straw realizes light and simple returning to field and effective utilization of oilseed rape and wheat straw, can substantially save water for rice irrigation and avoid seasonal water consumption peaks and water competition contradictions in rice production in arid regions, and realizes cost-reducing efficient ecological rice cultivation.

The invention discloses a full-biocontrollable degradation multifunctional agricultural weeding and soil moisture-preserving mulching film. The full-biocontrollable degradation multifunctional agricultural weeding and soil moisture-preserving mulching film is prepared from the following raw materials in percent by weight: a dandelion extract, defatted soybean meal, modified polyamide-amine, 17-33parts of modified starch, micro-crosslinked polyvinylpyrrolidone, corn protein, carboxymethyl cellulose, a modified polyacrylic copolymer, sodium alginate, carob bean gum, a polyoxyethylene / polyoxypropylene copolymer, modified sodium polyacrylate, acetophenone, sodium tripolyphosphate, sodium hexametaphosphate and succinic anhydride. The mulching film disclosed by the invention can achieve the purpose of controlling the degradation rate by controlling the crosslinking degree, not only has the heat-preserving and moisture-preserving functions, but also can be completely biodegraded after use, eliminates the pollution of residual fragments of an ordinary mulching film to soil, has outstanding weeding and insect-repellent effects, can greatly reduce the using amounts of fertilizers and pesticides, reduces the cost, protects the ecological environment, preserves soil moisture and extirpates weeds.

An irrigation device used for row crop comprises a water injection device and a water conveying device which is connected with the water injection device through water pipe. The water injection device comprises a spray pipe and a nozzle fixed at the end of spray pipe. The spray pipe is fixed on a bracket and is installed in parallel with the ground. The nozzle which is fixed at the end of spray pipe is installed with a radial closed impeller. The irrigation device which is used for row crop according to the invention installs the spray pipe in parallel with the ground. Furthermore the nozzle is installed with the radial closed impeller. The water injected from the nozzle is sprayed between the crop rows with a strip shape after scattered by the impeller for directly moisturizing the crop root. The arrangement mode of device in the field adopts a mode of interlaying collocation of spraying units for realizing non-equal irrigation. The water is sprayed on half land under the precondition that all crops are irrigated. The irrigation water is greatly saved and the production cost of foodstuff is reduced.

The invention discloses a drought-resistant and water-holding coated fertilizer for strawberry. The coated fertilizer is characterized by being prepared from the following raw materials in parts by weight: 34-38 parts of melia azedarach seeds, 30-35 parts of garlic bulb, 23-27 parts of urea, 16-22 parts of ammonium phosphate, 12-16 parts of potassium sulfate, 10-14 parts of humic acid, 1-2 parts of polyacrylamide, 15-19 parts of ligneous plant fiber, 13-17 parts of coconut shell plant fiber, 8-13 parts of paraffin, 6-13 parts of waterborne acrylic resin, 5-7 parts of nano-kaolin, 4-7 parts of nano-montmorillonite, 1-2 parts of tea saponin, 0.3-0.8 part of zinc borate, 5-7 parts of EM bactericide, 7-10 parts of soil improver and a proper amount of water. According to the fertilizer, the plant fibers have the effects of significantly improving the physicochemical properties of soil, reducing capacity, relieving the hardening condition of soil, improving the water holding capability of soil and the utilization rate of water and saving irrigation water; the nano powder and the humic acid have the effects of holding water and fertilizer, improving the drought resistance of crops and increasing the category and quantity of microbes in soil; the tea saponin has the effects of killing pests and bacteria and promoting the growth of crops, is biodegradable and does not pollute the soil; and a water absorbent added in a coating agent can absorb moisture during much rain and release moisture during drought, so that the irrigation frequency is reduced, the cost is reduced and the income of peasants is increased.

The invention discloses a preparation method of a biofertilizer, belonging to the technical field of agricultural fertilizers. The preparation method of the biofertilizer comprises the following steps: uniformly mixing plant lactobacillus, phosphate solubilizing bacteria, potassium solubilizing bacteria, a bacillus subtilis culture and an aspergillus awamori culture in proportion; putting the mixture into a granulator to be granulated, controlling the grain sizes between 0.5mm and 2mm, then enabling the fertilizer granules to adhere to added humid polyglutamic acid, then controlling the temperature at 30-40 DEG C and maintaining the temperature for 1-3 hours, wherein the parts by weight of plant lactobacillus, the phosphate solubilizing bacteria, the potassium solubilizing bacteria, the bacillus subtilis culture, the aspergillus awamori culture and polyglutamic acid are respectively 20-35 parts, 1-2 parts, 2-4 parts, 10-15 parts, 8-15 parts and 5-8 parts. The fertilizer can be used for enhancing the drought resistance capabilities of crops, improving the physical properties of soil, improving the use efficiency, regulating acid-base balance of soil and reducing pollution of harmful substances in soil, such as nitrite and is conductive to increasing soil fertility.

The invention discloses an intelligent greenhouse and environmental control method of using the greenhouse effect for heat collection and fan coils for heat exchange. The greenhouse is a multi-unit combined light-transmissive greenhouse with a highly overhead structure and comprises fan coil devices which are arranged at the middle-upper portions of the greenhouse, wherein each fan coil device integrating a heat exchanger and a wet curtain comprises a high-air-volume low-air-pressure fan and is provided with an inner water circulation pipe and an outer water circulation pipe, and the fan coildevices are connected to a heat storage pool through one water supply and return pipe. Two curtain layers are arranged above and below the devices respectively. An intelligent control system is designed, the greenhouse is closed for keeping warm in the cold season, the fans are started, internal water circulation of the coils is enabled, the solar heat is accumulated into water during daytime, andcrops are supplemented with CO2 gas fertilizer; the solar heat in the water is released into the air during nighttime. The greenhouse is opened for ventilation in the hot season, the fans are started, and external water circulation is enabled; the ventilation cooling effect is improved through evaporation and heat absorption on the surfaces of the heat exchangers. The problem that the cost is toohigh when existing methods are adopted for regulating the greenhouse environment is solved in an environment-friendly low-carbon mode, the remarkable effects of increasing the production, improving the quality, reducing the consumption of drugs and saving water are achieved, and transformation and upgrading of facility agricultural production modes are facilitated.

The invention discloses a controllable starch-based biodegradable agricultural mulching film. The agricultural mulching film is prepared from PBAT+PLA or PBAT+PLA+MTPS or PBAT+PLA+MTPS+bagasse cellulose with a chain extender and a mold release agent. Based on the formula, degradation time and degradation efficiency of the biological mulching film can be adjusted and controlled in combination withan under-film drip irrigation technology by adjusting the composition ratio according to climate characteristics as well as growth and development and laws of water and fertilizer requirements of covered crops. The best mulching days for local mulched crops are reached in the safety period, the prospective effects of warming and preserving soil moisture, controlling weeds, reducing chemicals, stabilizing yield and increasing income in the mulching period are ensured, and the film can be degraded in time at the later growth stage or after harvest, and is finally decomposed into water and carbondioxide by soil microorganisms without polluting soil and ecological environment; a cheap modified starch-based composite material and sugarcane cellulose are added to the formula, so that the production cost can be greatly reduced, and the mulching film has better comprehensive performance and good market application prospect.