259results about How to "With water retention" patented technology

The invention discloses a color drought-resistance water-retention sustained-release compound fertilizer and a method for producing the same, wherein the method comprises the followings steps of: measuring, crushing and uniformly mixing fertilizer raw materials, granulating by adopting an ammonia-acid method rotary drum granulating process, performing one-stage drying, semi-cooling and screening of grains, and sending the mixture to a coating machine; adopting a continuous melting rotary drum film-coating method coating process to perform compressed air atomization and uniform coating of color coating oil sprayed by a special nozzle; and adding a water-retaining agent and an anti-adhesive agent by a screw conveyor, and performing full stirring, cooling and packaging to obtain the finishedproducts. The color drought-resistance water-retention sustained-release compound fertilizer has the effects of drought resistance, water retention, nutrient preservation, soil condition improvement and environmental protection, and the appearance of the fertilizer has color marks; and when the fertilizer is applied to crops, the fertilizer has the advantages of increasing yield and incoming, along with simple production method, convenient operation, low cost and high benefits.

The invention provides a biomass charcoal-based organic fertilizer and a preparation method thereof. The biomass charcoal-based organic fertilizer comprises, by weight, 30 to 60 parts of biomass charcoal, 10 to 30 parts of mould-free chicken manure, 5 to 10 parts of bone meal, 6 to 11 parts of bentonite, 2 to 5 parts of refined wood vinegar liquid, 2 to 4 parts of a trace element additive and 0.5 to 1 part of a beneficial bacterial agent. Usage of the biomass charcoal-based organic fertilizer is beneficial for improving water-retention and fertility-retention capability of conventional soil, effectively enhancing soil fertility and purifying the growing environment of crops.

The invention discloses a desert control method of a chemical sand-fixing greening technology based on organic composite materials, and the desert control method is characterized in that hydrophilic polyurethane resin curing agent solution is sprayed on a sand or soil layer of greening objects for sowing the vegetation for forming a porous fixed sand layer. The fixed sand layer formed by the method has appropriate thickness and strength, good durability, good anti-freeze and melt properties and functions of water retention, thermal insulation, ventilation, vegetation and the like. According to the method of the invention, the stable and effective solidifying can be carried out on sand even under the specific desert environments of no abundant groundwater sources and strong wind erosion, and the purpose of vegetation greening can be also realized. The method has large-scale construction properties and good economic performances, thereby being applicable to the needs of large-scale chemical sand fixing and vegetation greening of the vast desert and realizing the plant greening function and the ecological restoration and the control of desertified land.

The invention relates to an organic ecological farming system for a rice field. The system is characterized in that a water inlet canal, a drainage canal, a water inlet channel and a drainage channel are crossed to form the cross-shaped drainage rice field, a pump station is arranged at the crossed position of the crossed canals and channels, the rice field is divided into multiple field pieces in the type of plain terraced fields, fish ditches are arranged on the peripheries of the field pieces, and a fish pit is arranged at one corner of each field piece. According to the organic ecological farming system, high harvesting benefits of both rice and fish are achieved, and meanwhile the water conservation fertilizer conservation, low carbon and high ecosystem service functions are achieved; organic ecological farming can be carried out by transforming a common rice field near a good water source appropriately, and the optimized technology for transforming low yield fields and bottom land is achieved.

The synthesis process of urea-formaldehyde controlled releasing fertilizer includes mixing gelatinized starch and urea, adding the mixture of polymer water absorbing resin and formaldehyde solution, adding vegetable oil, organic matter including turf and stalk and adsorbent including zeolite, adding sulfuric acid for acidifying to obtain solid product, and final drying, crushing and sieving to obtain the product. The said process avoids excessive crosslinking of polymer to raise the utility of nitrogen, avoids volatizing of formaldehyde during reaction to raise environment quality and production efficiency, and adds zeolite and other inorganic stuffing to raise product quality and provide water maintaining and fertilizer maintaining function and trace elements. In addition, phosphate fertilizer and potash fertilizer may be also added to produce re-compounded fertilizer.

The invention disclose a modified sand body, which is formed by the mixing of solution and sand, wherein the solution with cohesiveness and adhesion is formed by dissolving water-soluble solid state organic substance in water. According to the invention, after the water is evaporated, the water-soluble solid state organic substance can bond sand particles, and dissolve in water again to form the solution with the cohesiveness and the adhesion to bond the sand particles; the modified sand body allows a common sand body to be in 'pedogenesis', changes the interaction relation between sand body particles, and forms a particle pore structure with binding force (cohesive force); when the modified sand body is in the use process, the substance is difficult to run off due to the characteristics of the cohesiveness and the adhesion; the sand body is allowed to have same properties of stabilizing and storing moisture and nutrient as the properties of the soil, so as to be able to provide strong conditions for the growing of plants, and be an ideal measure for the governing of deserts; meanwhile, the modified sand body can also be taken as a means to utilize sand resources of a sand beach and the like to conduct plant planting.

The invention relates to a cold resistant packing agent, wherein it comprises 5-50% cold resistant nutrient, 10-70% macromolecule water absorber, 0.1-10% disinfector, 0.1-10% antiseptic, 0.01-2% growth adjuster, 0.02-2% cold resistant nutrient, and 0.2-20% oxygen releaser. And the cold resistant sprayer comprises 30-80% cold resistant nutrient, 4-40% cold resistant liquid, 0.02-2. 0% surface activator, 0.001-1. 0% plant growth adjuster and left water. The invention can seed at low temperature. And the cold resistant sprayer can improve the cold resistance of plant / .

The invention discloses a method for preparing biological compound fertilizer, which comprises steps of preparing an organic adhesive, preparing fertilizer core, preparing a coating agent, coating and the like. In the method, earthworm manure and humic acid are used as organic components, a NPK medical fertilizer is used as an inorganic component, rich microbes and enzymes in the earthworm manure and added released phosphorus and potassium are used as a microbial component, modified starch is used an organic adhesive for granulating the fertilizer, and natural cellulose such as grain bran is used as a modified polymer water absorbing agent for making a coating material. The prepared fertilizer integrates inorganic and organic components and microbes, and is a biological compound fertilizer with multiple functions of water retaining, sustained release, stress resistance and absorption promotion.

The invention relates to coal base biological soil for replacing topsoil which comprises (by weight percentage) wind-blown coal 30-60%, coal gangue 10-40%, coal ash 10-40%, alta-mud 1-10%, turfy soil 10-30%, water-loss reducer 0.1-1%, soil stabilizer 0.1-1%.

The invention discloses a carbon-based rice seedling raising substrate for rice. The carbon-based rice seedling raising substrate comprises biochar, a straw fermented product, yellow soil, vermiculite and an inorganic fertilizer, wherein a volume ratio of the biochar to the straw fermented product to the yellow soil to the vermiculite is (10-20): (15-30): (25-35): (15-25); the inorganic fertilizer comprises nitrogen, phosphorus pentoxide and potassium oxide; and per 10 m<3> of the carbon-based rice seedling raising substrate for the rice comprises 12 to 18 g of a nitrogen fertilizer, 4 to 7 g of a phosphorus fertilizer and 5 to 16 parts of a potassium fertilizer. The invention also discloses a preparation method of the carbon-based rice seedling raising substrate for the rice. According to the invention, by utilizing the biochar and the fermented product which are prepared from widely-available farmland organic wastes like rice straws, and inorganic substances like the yellow soil and the vermiculite, the carbon-based rice seedling raising substrate for the rice is prepared. The substrate provided by the invention has the characteristics of fertility holding, water holding and good air permeability, and can effectively prevent the occurrences of bakanae disease, sheath blight and the like in a seedling stage.

The invention discloses water-retention slow-releasing carbon-based compound fertilizer and belongs to fertilizer used in agriculture and forestry production. The carbon-based compound fertilizer is prepared from the ingredients of nitrogenous fertilizer serving as the major ingredient, phosphatic fertilizer, potash fertilizer and trace elements in the fertilizer and filling powdered carbon. The preparing method comprises the following steps of: mixing the ingredients uniformly to serve as powder material or pelletizing the powder material of the mixed powder and bagging for supplying the market. According to the invention, agriculture and forestry plant waste and the like are carbonized for preparing carbon powder, so that the utilization of waste materials can be achieved, the income of farmers can be increased, and the environment can be protected. Most importantly, filler such as mountain flour is replaced by the carbon powder so that the efficacy of the fertilizer can be improved, significant process can be made, and an unexpected effect can be achieved. According to the invention, the basic one-water double-fertilizer requirement in agricultural production can be met. As the carbon powder has strong permeability and a moisture-feed circulative-absorbing water-retention function, oxygen in the fertilizer can be slowly released, the use ratio of the fertilizer is improved, and essential condition for plant growth is met.

The invention relates to a double-row concave type combined ridge tobacco transplant method. The method is characterized by comprising the following steps of soil preparation, fertilizer application, ridging, film covering at proper moisture, transplanting at land for growing field crops, field management and management on the land for growing the field crops. The double-row concave type combined ridge tobacco transplant method is simple and easy to implement, and has the obvious advantages of collecting rain, preserving water, saving labor, improving utilization rate of fertilizers and improving the yield, the output value and the economical benefits of tobaccos.

The invention discloses a process for preparing stress-resistance seaweed fertilizer comprising the steps of, (1) airing seaweed, removing impurity substance, (2) charging fresh water, (3) agitating and steeping, decompression concentration, separating high temperature salt by centrifugal separation, (4) disintegrating concentration liquid with dried solid evolution, (5) charging 95% of ethanol into fresh seaweed, (6) squashing the algae, agitating, centrifuging and storing the liquid, (7) removing salt from the solution through compression, (8) cooling down, charging saturated diamino ammonium chromic thiocyanate solution, (9) collecting deposition, (10) mixing the compression liquid, dried solid substance and precipitate homogeneously, (11) spray drying.

The invention provides a total nutrient rice seedling culture substrate, belonging to plant seedling culture substrates in the field of agriculture, and in particular relates to a total nutrient rice seedling culture substrate which takes turf as a main ingredient. The total nutrient rice seedling culture substrate contains 70%-87% of turf, 10%-27% of a fertilizer and 3%-15% of an agricultural water-retaining agent by weight percentage, wherein the fertilizer contains 20-40 parts of a nitrogen fertilizer, 15-25 parts of a phosphate fertilizer, 10-15 parts of a potash fertilizer, 8-12 parts of hypha protein powder, 6-10 parts of fulvic acid and 5-10 parts of fly ash in parts by weight. The total nutrient rice seedling culture substrate provided by the invention has the advantages of warming, ventilating, retaining the fertilizers and water, being nutritionally balanced, small in volume weight, easy and convenient to operate, easy to manage, good in seedling quality and low in seedling culture cost, labor and effort conservation, and the like.

The invention discloses a special biomass charcoal-based composite fertilizer for corn. The special biomass charcoal-based composite fertilizer for the corn comprises the following components in parts by weight: 7-15 parts of potassium magnesium sulfate fertilizer, 3-7 parts of potassium chloride, 5-13 parts of fertilizer-grade calcium hydrogen phosphate, 15-20 parts of urea phosphate, 40-50 parts of powdery urea, 6-9 parts of rapeseed straw charcoal powder, 0.2-0.8 part of sodium silicate, 0.05-0.47 part of EDTA (ethylenediaminetetraacetic acid) chelated zinc, 0.05-1 part of EDTA chelated manganese and 1-7 parts of auxiliary materials. The invention further discloses a preparation method of the special biomass charcoal-based composite fertilizer for the corn. After the special biomass charcoal-based composite fertilizer for the corn, disclosed by the invention, is applied, the soil can be effectively improved and fertilized, the content of organic matters in the soil is increased, the soil bulk density is reduced, and the water-retaining and fertilizer-keeping capability of the soil is improved; furthermore, the utilization efficiency of fertilizer nutrients is relatively high, the release of nutrient elements is coordinated and lasting, the nutrients can be supplied to the corn in a relatively comprehensive and balanced manner, the yield of the corn is significantly improved, the quality of the corn is improved, and the economic benefits are obvious.

A method for preparing to long-thread vermicelli (or sheet jelly) includes such steps as proportionally mixing starch, starch ester of octenyl succinate, soya bean lecithin, konjak glucomannan, D-sodium isoascorbate, edible vegetative oil and water, stirring, and heating while shaping. It features no use of alum.

The invention provides a moss stereoscopic greening process. The process includes the steps that a three-dimensional planting net is fixed to a wall or slope to serve as a planting matrix reinforcing structure of moss; a mixture which has mechanical properties and is of a porous sponge structure is fixedly formed on the three-dimensional planting net, wherein the mixture is formed by mixing the moss, a functional additive, a high polymer material, a planting matrix and water; the moss is subjected to irrigation conservation in a drip irrigation and spray system combined mode. By means of the moss stereoscopic greening process, the moss can be rapidly attached to the wall or slope, and a good growth environment can be created for the moss.

The invention discloses an efficient compound fertilizer which is prepared from the following raw materials in parts by weight: 70-80 parts of sheep manure, 45-50 parts of waste residues of beer, 23-26 parts of pear saw dust, 30-34 parts of potatoes, 30-34 parts of urea, 20-23 parts of monopotassium phosphate, 12-17 parts of diammonium phosphate, 10-14 parts of potassium chloride, 10-12 parts of potassium sulfate, 1-2 parts of sodium sulfite, 4-6 parts of sodium humate, 4-6 parts of a coating agent, 3-4 parts of an EM bactericide, and a proper amount of water. The fertilizer disclosed by the invention is prepared from organic matters including the sheep manure, the waste residues of beer, the pear saw dust, the potatoes and the like which are added with nitrogen, phosphorus and potassium, micro-elements, mid-elements and a sustained-release material, so that the fertility of the soil is improved and the aim of slowly releasing fertilizer nutrients is achieved, the utilization rate of the fertilizer is increased as well, and the environmental pollution is reduced. The prepared fertilizer has the characteristics of water retention, fertilizer retention, long fertilizer action time and good air permeability; meanwhile, the soil can be improved, nutrient balance of the soil is guaranteed, and sustainable development of the agriculture is promoted.

The invention discloses a cultivation method for increasing the grafting survival rate of macadimia nuts. The method includes the following steps of cultivating stock, wherein the position, 8 cm away from the surface of a sand bed matrix, on the face of the upper portion of the stock is cut to form a notch with the length of 3 cm after 5-7 leaves grow on a stock seedling, and the middle of the notch is dug to form a cylindrical blind hole with the length of 1.5 cm; processing a scion, wherein an inclined face notch is formed by shearing the scion from the position 3 cm away from the base part of the scion to the base part, a cylindrical protrusion which is 1 cm long and matched with the cylindrical blind hole of the stock seedling is reserved in the middle of the inclined face notch, a protection agent is aligned with the inclined face notch and the cylindrical protrusion, and the inclined face notch and the cylindrical protrusion are smeared with the protection agent; primary grafting is conducted, wherein grafting promoting agent diluent is dropwise added into the cylindrical blind hole of the stock seedling, the cylindrical protrusion of the scion is aligned with the cylindrical blind hole of the stock seedling, and the butt joint inclined face of the cylindrical protrusion and the cylindrical blind hole is coated with grafting promoting agent diluent so that the stock seedling and the scion can be tightly combined and primary grafting can be completed. By means of the method, the grafting survival rate reaches up to 91.7%.

The invention provides a method for retaining freshness of chilled fresh fish heads, wherein freshwater fish heads are used as raw materials, and the freshness retaining of the fish heads is realized by virtue of sterilizing, coating, modified atmosphere packaging and other methods. The method comprises the main steps of: pre-treating: performing scaling, gill removing and cold-water cleaning on the fresh fish heads; sterilizing by electrolytic ozone water; draining; filling simulated gills; coating a compound fresh preserver; blowing to dry body surface water and sterilizing by using ultraviolet light; packaging under a modified atmosphere; and obtaining products. The main advantages of the method provided by the invention are as follows: (1) ginger is used for preparing the simulated gills and placed in gill covers, so that the function of assisting bacterial inhibition and fishy smell removal is achieved, the eye rims of the fish heads can be effectively prevented from sinking and the influence on the fish head appearances due to gill removal is eliminated; (2) the fish heads are sterilized by using the electrolytic ozone water and the ultraviolet light, so that the initial bacterial count of the raw materials is effectively decreased, and chlorine dioxide and preservative are not used so that the production technology is green and environment-friendly; and (3) the fish heads subjected to cold sterilization is coated with a green compound coating fresh preserver, so that the quality guarantee period of fish head products is effectively prolonged.

The invention discloses a method for governing tibbas by utilizing modified sand. The modified sand is paved on the surface of a tibba to be governed, and is formed by dissolving a water-soluble solid organic matter in water to form a cohesive and adhesive solution, and mixing the cohesive and adhesive solution with sand; after moisture evaporates, the water-soluble solid organic matter can bond sand, and can be dissolved in water again after meeting water to form the cohesive and adhesive solution to bond sand. According to the invention, common sand can serve as soil; the interaction among sand grains is changed fundamentally; a particle pore structure with binding force (sticking force) is formed; after repeated evaporation and wetting, materials cannot run off easily due to the cohesive and adhesive properties, and the modified sand can be as stable as soil, and can store water and nutrients as soil. Therefore, the method provides a solid condition for tree growth, and is an ideal tibba governing measure.

The invention discloses a biomass charcoal-based compound fertilizer for wheat. The biomass charcoal-based compound fertilizer comprises the following components in parts by weight: 8 to 14 parts of potash magnesium sulphate fertilizer, 12 to 17 parts of potassium chloride, 6 to 13 parts of fertilizer-level calcium hydrophosphate, 13 to 21 parts of urea phosphate, 30 to 40 parts of powdery urea, 8 to 14 parts of soybean straw powdered carbon, 2 to 7 parts of sodium silicate, 1 to 4 parts of EDTA chelate Zn, 1 to 4 parts of EDTA chelate Fe, 1 to 5 parts of ammonium molybdate and 3 to 7 parts of an auxiliary material. The invention further discloses a preparation method for the biomass charcoal-based compound fertilizer special for the wheat. According to the invention, after the biomass charcoal-based compound fertilizer special for the wheat is applied, not only can soil be effectively improved and fertilized, the content of soil organic matter can be increased, the volume weight of soil can be reduced, and the water retention and fertilizer retention capabilities of the soil can be improved, but also the fertilizer nutrient utilization efficiency is relatively high, nutrient element release is coordinated and lasting, nutrient can be supplied to the wheat relatively comprehensively and evenly, the output of the wheat can be obviously improved, the quality of the wheat can be improved, and obvious economic benefit can be achieved.

The invention discloses a high-yield Majiagou celery soilless cultivation medium. The medium is characterized by comprising the following components by weight: 20 to 25% of chicken manure, 20 to 30% of an organic compound fertilizer, 1 to 2% of a boron fertilizer, 10 to 15% of grass carbon, 8 to 12% of quarry powder, 8 to 12% of algae, 5 to 7% of spinach defatted cakes, 7 to 9% of wheat straw, 2 to 4% of weathered coal, 1 to 2% of bentonite and 4 to 6% of chinaberry seeds. According to the invention, the chicken manure and the organic compound fertilizer provide macroelements like nitrogen, phosphorus and potassium; the bentonite can regulate and improve total porosity, water-holding porosity and aeration porosity of the medium; the addition of the components like the algae and the spinach defatted cakes supplements trace elements like iodine, boron and manganese which are needed for the growth of the celery; thus, the cultivated celery by using the medium has higher nutritional quality and nutritional value. Meanwhile, the cultivation medium provided by the invention has multiple effects of conserving water, saving fertilizer, remarkably increasing yield and strengthening stress resistance.

The invention provides dry-mixed mortar prepared from industrial solid waste. The dry-mixed mortar is characterized by being prepared from materials in parts by weight as follows: 100 parts of cement, 300-400 parts of river sand, 50-100 parts of steel slag, 0-50 parts of iron mine tailings, 0-50 parts of glass powder, 1-2 parts of an interface reinforcing agent, 1-2 parts of an exciting agent, 0.1-0.5 parts of a water retaining agent, 1-2 parts of a water reducing agent and 0.1-0.3 parts of reinforcing fibers. According to the dry-mixed mortar, the industrial solid waste is fully utilized as aggregate to replace natural river sand, environmental protection is facilitated, resource recycling is realized, and meanwhile, performance such as the freezing resistance, the permeability resistance and the like of the dry-mixed mortar is improved through addition of the industrial solid waste.

The invention relates to the field of agriculture and discloses a degradable multifunctional agricultural composite mulching film and a preparation method thereof. The mulching film is prepared from the following components: 30-50wt% of poly(butylene succinate), 35-55wt% of polypropylene, 3-7wt% of polyvinyl alcohol, 0.5-1.5wt% of a thermal degradation promoter, 0.5-1.5wt% of a photocatalytic degradation promoter, 0.25-0.75wt% of a silane coupling agent, 4-8wt% of antibacterial aerobic granules and 0.5-2.5wt% of a lubricating agent. According to the mulching film disclosed by the invention, poly(butylene succinate) with high natural degradability serves as one of the main raw materials, and the mulching film contains the thermal degradation promoter and the photocatalytic degradation promoter, so that the degradability of the mulching film is further improved. In addition, according to the antibacterial aerobic granules, the mulching film has the water-retaining, breathable, aerobic and antibacterial functions.

The invention relates to a geology grading manufacturing method with disaster prevention and ecological functions. According to the invention, local existing earthwork or a common road engineering grading material is adopted, dinas or soil or macadam or mixed permeable concrete and the like is provided, and most importantly, a ducted body with a special design is added, all the elements are mixed and stirred and then paved on a soil layer, and then the soil layer paved with the elements is compacted after being pressed appropriately, so as to form an ecological grading layer. Besides the supporting function, the ecological grading layer also has the effects of water storing, water preservation and soil texture improvement, so that favorable living environment can be created for soil microbes and protozoon in the soil, the grading layer can preserve water in high degree and prompt the microbial proliferation; when the free air temperature is high, the moisture in the soil can be released through evaporation, so as to reduce the heat island effect; and in the case of raining, the water can be preserved and stored for use during drought, and the possibility of flood occurring on the surface of earth can be reduced..

The invention discloses C60 pumping concrete and a preparation method thereof. According to the technical scheme, the C60 pumping concrete is characterized by being prepared from the following components in parts by weight: 400 to 420 parts of cement, 130 to 150 parts of an admixture, 690 to 710 parts of a fine aggregate, 960 to 980 parts of a coarse aggregate, 8 to 10 parts of an admixture and 160 to 170 parts of water, wherein the fine aggregate is formed by mixing river sand and machine-made sand in a weight ratio of 3:7, the fineness modulus of the river sand is 0.9-1.1, and the fineness modulus of the machine-made sand is 2.8-2.9; the coarse aggregate is formed by mixing large pebbles and small pebbles in a weight ratio of 6.5:3.5, the particle size of the large pebbles is 10-20 mm, the mud content of the large pebbles is smaller than 0.5%, the particle size of the small pebbles is 5-10 mm, and the mud content of the small pebbles is smaller than 0.6%. The pumping concrete has theadvantages of being high in compressive strength, good in workability and high in pumping height.

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 special fertilizer for ornamental flower plants, relates to a special fertilizer for flowers, and belongs to the technical field of biologic fertilizers. The fertilizer is characterized in that the fertilizer comprises 25-35wt% of Trichoderma spp., 15-20wt% of urea, 12-13wt% of ammonium biphosphate, 12-13wt% of potassium oxide, 6-13wt% of attapulgite powder, 10-15wt% of humic acid and 1-2wt% of amino acid chelated rare earth. The fertilizer has the characteristics of water retention, fertilizer retention, long fertilizing time and good ventilating performance, is benefit for the root growth and the absorption and utilization of phosphorus by plants, and can effectively prevent ammonia and potassium loss and prevent the fixation of soil plant active mineral components by phosphoric acid to make soil in a loosened ventilating state for a long time, so the growth of crops is promoted.

The invention relates to a mulching membrane and a preparation method thereof. The positive side of the mulching membrane has a silver colour with a reflectance rate of 45%-50%, and the back side of the mulching membrane has a black colour, and the mulching membrane comprises the following raw materials during preparation: 8-15 parts of highly-reflective silver master batches, 8-15 parts of black master batches, 62-70 parts of linear low density polyethylene, 3-9 parts of low density polyethylene, 3-10 parts of a metallocene, and 2-6 parts of anti-aging special master batches. Besides the advantages of water retention, soil conservation, fertilizer conservation and effective control on soil moisture and temperature, the silver and black double-side mulching membrane also has the following advantages: the light transmittance is 10%, the reflectance rate is 45%-50%, on one hand, the silver positive side can have a repellent effect on aphids, and on the other hand, existed reflected light enables fruits growing below and fruit parts back to sunshine to be indirectly illuminated by the sun, so that the ripening period is shortened, fruit peel coloration is promoted, and the sugar content and the nutritional value of the fruits are improved. The black back side can prevent sun penetration, and is beneficial to inhibit weed growth.