52results about How to "Reduce the frequency of topdressing" patented technology

The invention discloses a fertilizer slow-release synergistic agent and a preparation method thereof. The fertilizer slow-release synergistic agent comprises the following raw materials in percentage by mass: 0.1-20 % of polyaspartic acid and slat thereof, 0.1-10 % of urease inhibitor, 0.1-30 % of nitrification inhibitor, 0.03-5 % of plant growth regulating agent, 10-35 % of soil regulating agent and 10-80 % of carrier. The fertilizer slow-release synergistic agent disclosed by the invention is mainly used for the slow-release synergism of a compound mixing fertilizer, is increased in the utilization rate of the fertilizer, and is capable of effectively improving the soil, and the soil moisture can be preserved; and when the fertilizer slow-release synergistic agent is used, the fertilizer slow-release synergistic agent can be added into a material feeding system or an enveloping drum together with the fertilizer raw materials and mixed with the fertilizer raw materials, the effect of slow-release synergism can be realized, and the dosage of the fertilizer slow-release synergistic agent is 4-8 kg per ton fertilizer.

The invention relates to a long-acting special fertilizer for oil-tea camellia and a preparation method thereof. The long-acting special fertilizer is characterized in that: the fertilizer is prepared from the following raw materials in percentage by weight: 31.3 to 42.9 percent of nitrogen fertilizer, 8.5 to 8.7 percent of phosphate fertilizer, 26.7 to 32.0 percent of potassic fertilizer, 2.6 to 5.1 percent of medium-micro fertilizer, 10 to 15 percent of organic additive and 4 to 19.4 percent of controlled release additive. The special fertilizer for the oil-tea camellia is produced according to the absorption characteristics of the oil-tea camellia on N, P and K, is suitable for the absorption of N, P and K by the oil-tea camellia, has reasonable proportion and long fertilizer efficiency period, can be used as base fertilizer and additional fertilizer, has high nutrient utilization rate, and is safe and environment-friendly; the special fertilizer can remarkably improve the utilization rate of nitrogen, the increasing range is over 8 percent, and the fertilizer efficiency period is as long as 90 to 150 days; and under the same nutrient condition, the special fertilizer can increase the yield of oil-tea camellia fruits by about 10 percent, can remarkably promote the quality of the oil-tea camellia fruits, and promotes the oil content by over 0.6 percent.

The invention relates to the technical field of agricultural plantation, in particular to a dendrobium officinale culture medium. The medium comprises pine barks and waterweeds; by a special fermentation process of the pine barks, fertility loss along with water when watering is performed after fertilization is avoided, nutrients in the culture medium can be kept in a long time, growth of dendrobium officinale root systems is benefited, and topdressing frequency and usage amount are reduced; after fermentation, the pine barks contain abundant beneficial microorganisms and bioactive substances with a plant growth promotion function and a disease and insect control function. By adoption of the culture medium for transplantation of dendrobium officinale tissue culture seedlings, the survival rate is high after transplantation and reaches above 85%, quickness in growth is realized, and transplanted dendrobium officinale is in good growth conditions in a later stage, measured data of bud amount, plant height, stem thickness and root quantity of dendrobium officinale planted with the culture medium are superior to those of dendrobium officinale planted with other media, and occurrence rate of pest and disease damages is evidently decreased.

The invention relates to a gama-PGA-containing microbial organic fertilizer with moisture and fertility retention functions and a preparation method of the microbial organic fertilizer. The preparation method comprises the steps of retaining moisture for organic fertilizer, evenly spraying seed fluid in the organic matters by 0.1 to 1 percent weight of materials to be fermented, regulating the initial moisture ranging from 40 to 60 percent, evenly mixing carbon-nitrogen (C / N) ratio of 20-30, culturing for 15 to 30 days at 60-70 DEG C, turning over and mixing for each seven days, and fermenting, thus obtaining finished products. The microbial organic fertilizer has superstrong hydrophilcity and heavy metal moisture-retention adsorption capability, as well as endurable slow release function, and can improve physicochemical property of soil, and promote root growth.

The invention discloses a novel efficient biochar-based water-retaining dedicated crop fertilizer, prepared from, by weight, 100-300 parts of urea, 350-500 parts of monoammonium phosphate, 100-300 parts of potassium chloride, 0-15 parts of calcium magnesium phosphate fertilizer, 40-100 parts of biochar, 0-30 parts of EDTA (ethylene diamine tetraacetic acid) chelated trace elements, 0-15 parts of polyglutamic acid, and 0-100 parts of additives. The preparation process of the fertilizer is simple, the fertilizer contains biochar, polyglutamic acid and various trace nutrients and can improve soil environmental conditions, land utilization and land maintenance are combined, crop yield is increased, and the fertilizer has high efficiency and zero pollution.

The invention relates to a special fertilizer for strawberry by using worm excrement as a matrix and a preparation method and application thereof. The special fertilizer for strawberry is prepared from the following raw materials in parts by weight: 400 to 500 parts of black soldier fly worm excrement, 400 to 500 parts of yellow mealworm worm excrement, 5 to 6 parts of urea, 10 to 15 parts of diammonium phosphate, 6 to 8 parts of potassium sulfate, and 50 to 60 parts of vermiculite. The special fertilizer for strawberry has the advantages that the special fertilizer is used as a base fertilizer for the strawberry growth, the soil can be effectively improved, the survival rate of the strawberry is improved, the salt diseases due to excessive fertilizer applying can be prevented, the fertilizer re-applying times and amount are reduced in the later stage, and the output and quality of the strawberry are improved.

The invention discloses a high-yield bitter gourd cultivation method and relates to the technical field of vegetable planting. The high-yield bitter gourd cultivation method comprises the following main steps of variety selection, nutrient soil making, land preparation and rectangular piece making, seed soaking and germination accelerating, sowing, field management, frame erection and branch pruning, disease and insect pest prevention and control and timely harvesting. By adopting the high-yield bitter gourd cultivation method, the emergence rate of bitter gourd seedlings is up to 98% or above, the survival rate of the seedling coming up out of the ground is up to 99% or above, the emergence time is shortened to be 8 days, and the yield is increased by 25% or above. In addition, the fertilizer efficiency is lasting, and the topdressing frequency during cultivation is effectively reduced.

The invention discloses a polypeptide fertilizer synergistic agent, relating to a fertilizer synergistic agent, namely a broad-spectrum plant nutrient absorption promoter, particularly a polypeptide fertilizer synergistic agent and a preparation method thereof which are applicable to agriculture production, flower culture and plant husbandry. The synergistic agent is prepared by evenly mixing poly potassium aspartate with calcium powder according to a mixture ratio, and the weight percentage mixture ratios of materials are as follows: 0.7-5 percent of poly potassium aspartate, 84-91.3 percent of calcium powder and the balance of water; and the total amount is 100 percent. The preparation method of the polypeptide fertilizer synergistic agent comprises the steps of weighing the materials of the poly potassium aspartate, the calcium powder and the water according to mixture ratio, putting the calcium powder weighed by mixture ratio into a stirring mixer, dissolving the poly potassium aspartate in the water to form a solution, evenly spraying the solution on the calcium powder, fully stirring and mixing, then balling and granulating; screening for ensuring granularity; and drying in a rotary drum dryer with drying temperature of 110-130 DEG C, air-extracting cooling to achieve normal temperature, then measuring and packing, thus preparing the polypeptide fertilizer synergistic agent.

The invention provides a compound microbial fertilizer for reducing underground root-knot nematodes and a method for preparing the compound microbial fertilizer, and relates to the field of agricultural fertilizers. The compound microbial fertilizer for reducing the underground root-knot nematodes comprises organic fertilizers, inorganic fertilizers, microbial preparations and adhesive agents. The compound microbial fertilizer for reducing the underground root-knot nematodes and the method have the advantages that physical structures of soil can be regulated by inorganic nitrogen, phosphorus and potassium materials, animal manure and organic matters of humic acid, and abundant nutrition such as carbon sources, nitrogen sources and phosphorus sources can be provided for microorganisms in the soil; the purposes of killing underground pests and inhibiting diseases can be achieved by the compound microbial preparations, high-quality nutrition and biological stimulin can be provided for the microorganisms in the soil and crops, and accordingly the compound microbial fertilizer and the method are favorable for growth of plants.

The invention discloses a preparation method of a mineral element containing coated sustained-release basic fertilizer for paddy rice. According to the preparation method, an internal membrane material and an external membrane material are prepared in advance; then the internal membrane material is sprayed on the surface of a fertilizer core to carry out coating so as to obtain a material A; thenthe external membrane material is sprayed on the surface of the material A to carry out coating so as to obtain the basic fertilizer. The provided coated sustained-release basic fertilizer has the advantages that the nutrients of the coated sustained-release basic fertilizer are comprehensive, the fertilizing effect is long-lasting, the utilization rate is high, the water retention performance isgood, the sustained-release effect of inorganic nutrients is good, moreover, the damage of the basic fertilizer to the soil environment is small, the paddy rice yield is high, and the paddy rice quality is good.

The invention discloses a special compound fertilizer for tobaccos. The special compound fertilizer is prepared from the following components in parts by weight: 50 to 63 parts of potassium chloride, 200 to 450 parts of potassium sulfate, 70 to 100 parts of potassium nitrate, 100 to 200 parts of monoammonium phosphate, 100 to 210 parts of ammonium nitrate-phosphorus, 4 to 40 parts of a boron fertilizer, 55 to 81 parts of magnesium sulfate, 21 to 26 parts of ZnSO4.7H2O and 10 to 20 parts of a release controlling agent. A preparation method comprises the following steps: mixing, pre-heating, granulating, drying, sieving, cooling and sieving again. The special compound fertilizer for the tobaccos is specially designed by aiming at fertilizer demanding characteristics of the tobaccos, and has the effects of enhancing the adsorption efficiency on the fertilizer by soil and improving the absorption rate of nitrogen and a phosphorus fertilizer.

The invention discloses a method for planting Bletilla striata seedlings under a broad leaved forest. The method mainly comprises Bletilla striata sterile seedling cultivation, greenhouse domestication, and planting under a broad leaved forest. The method comprises: after a Bletilla striata seedling planting field under a broad leaved forest is applied by a water-logged compost as a base fertilizer, making a bed, covering a black plastic mulching film on a bed surface; digging a pond on the bed surface which is covered by the black plastic mulching film, to plant Bletilla striata seedlings, in the planting pond, covering fine earth and then covering manure coffee shells, digging a pond on the bed surface which is covered by the black plastic mulching film, to plant Bletilla striata seedlings, soil humidity maintaining in 70-80%, respectively performing topdressing once in spring and autumn each year, topdressing being 30-40 kg / mu of superphosphate and 100 k / mu of a water-logged compost. The method can effectively inhibit growth of more than 70% weed in the Bletilla striata seedling planting field under a forest, effectively improves soil fertility, and soil organic matter content is improved by 68%-88%, the number of topdressing is reduced, and Bletilla striata tuber fresh yield is improved by 15-18% in each mu.

The invention provides a lotus rhizome interplanting Nasturtium officinale R.Br. and late rice high efficiency cultivation method mainly comprising the following steps: 1, selecting Yexiangyou rice seed, Lianxiang no.1 lotus rhizome seed and first generation Nasturtium officinale R.Br. seed; 2, selecting fertile soil field with strong water retention fertilizer conservation capability as the interplanting field; 3, planting at proper time; 4, reasonably closely planting; 5, reasonably applying fertilizers; 6, timely controlling insect and diseases. The method can realize interplanting of the lotus rhizome, Nasturtium officinale R.Br. and late rice, and can greatly reduce base fertilizer and topdressing application amount; the Nasturtium officinale R.Br. interplanting method can protect the lotus rhizome for safe overwintering, can improve soil temperature, thus advancing lotus rhizome seed germination growth time, and the lotus rhizome harvesting time can be advanced by 15-20 days when compared with other methods; the Nasturtium officinale R.Br. can be pressed into the mud in April of the next year so as to serve the lotus rhizome green fertilizer, thus reducing lotus rhizome additional fertilizer frequency and fertilizer amount; the late rice paddy rice tillering is normal, and the interplanting paddy rice needs no pesticide sprinkling, no fertilizer is needed, and the throw inserting seedling number is no difference from the double cropping late rice.

The invention discloses a method for carbon increasing fertilizing of soil in an apple orchard. The method comprises soil fertilization before planting, soil fertilization before fructification and soil fertilization after fructification and concretely comprises filling a planting trench with a plant material, animal feces and ground phosphate rock according to a ratio in least one month before apple tree planting, then filling the planting trench with soil, carrying out spreading, sinking and compaction, before an average fruit yield of apple trees is 10kg, applying organic carbon, compound microbial fertilizer and compound fertilizer or mixed fertilizer to the field according to a ratio in autumn every year, and after an average fruit yield of the apple trees is 10kg or more, applying humate and compound fertilizer or mixed fertilizer to the field according to different ratios by three steps every year. The method significantly increases apple orchard soil carbon content, improves soil fertility and soil health status, improves a carbon dioxide concentration and photosynthesis in the orchard, reduces the amount of fertilizer application and frequency of topdressing, and has good ecological and economic benefits.

The invention provides an imitation wild cultivation method for polygonatum sibircum. The method comprises the steps of field selecting, seed and seedling selecting and treating, land preparing, seed planting, field managing and harvesting. By selecting a forest field with a good shade environment for imitation wild cultivation for polygonatum sibircum, the imitation wild cultivation method for polygonatum sibircum not only can reduce manpower and material resource losses due to the manual construction of a greenhouse, but also can be helpful to the accumulation of soil organic matters, achieve the efficient utilization of a forest field resource, and meanwhile reduce the application of fertilizers; moreover, the imitation wild cultivation method for polygonatum sibircum can significantly reduce disease and pest damages, adopt no pesticides, improve the quality of polygonatum sibircum, and increase the income of a pesticide farmer; therefore, the imitation wild cultivation method for polygonatum sibircum is suitable for the cultivation of polygonatum sibircum.

The invention provides granular oxamide which is high in fertilizer particle hardness, and high in shape stability in water and has stable slow-release property. The number of topdressing times and the workload of topdressing can be reduced. A mixture of 0.5 parts by weight or more of polyvinyl alcohol or modified polyvinyl alcohol relative to 100 parts of oxamide powder is subjected to high-speedstirring and granulation in an inclined mixing disc container, and then is dried to prepare the granular oxamide.

Special compound microbial fertilizer for corn top dressing comprises double-strain bacterial fertilizer, potassium humate and urea, and is used for top dressing in a five-leaf stage or a bell stage of corn; double strains subjected to mixed fermentation have a significant synergetic effect; an ear bald rate of the corn can be decreased; the row number per ear, the grain number per row, the grain number per ear and the thousand grain weight of the corn are increased; and the yield is increased by 7.3-21.6% as compared with that of different processing control groups.

The invention relates to a clean-production fertilization method of controlled-release nitrogen fertilizer for paddy-rice seedling raising, is mainly applied to the synchronous fertilization during the paddy-rice seedling raising, and belongs to the technical fields of the reasonable amount-reduced application of novel fertilizer and agricultural clean production. The clean-production fertilization method is characterized by comprising the following steps of (1), taking a seedling raising tray for later use, taking the controlled-release nitrogen fertilizer for later use, and taking paddy-rice seedling raising nutrient soil for later use; (2), according to the paddy-rice seedling transplantation row spacing of 30cm is multiplied by 12cm and the seedling transplantation area, which is 36m<2> to 42m<2>, of the seedling for each tray, controlling to use 110g to 120g of seed for each tray and using 1.05kg to 1.1kg of the controlled-release nitrogen fertilizer for each tray; (3), taking and adding 2L of the paddy-rice seedling raising nutrient soil into the seedling raising tray, flattening, and drenching by using water; weighing, taking and uniformly sprinkling the controlled-release nitrogen fertilizer on the paddy-rice seedling raising nutrient soil. As the controlled-release nitrogen fertilizer has the characteristic of being long in release period and is also concentrated near a root system of paddy rice, in comparison with a conventional fertilization method, the use level of nitrogen fertilizer in the clean-production fertilization method can be decreased by 30 to 40 percent.

The invention relates to a novel controlled-release rice topdressing composition prepared by using a controlled-release fertilizer technology and a preparation method of the novel controlled-release rice topdressing composition. The composition comprises the following components in percentage by weight: 10-70% of a nitrogen fertilizer, 0-30% of a granular phosphate fertilizer, 0-30% of a granular potassium fertilizer, 0-2% of granular zinc sulfate, 0-1% of granular boron, 10-90% of anti-floating resin urea with the release period of 20-140 days and content of N larger than or equal to 42% and 0-20% of anti-floating resin potassium chloride with the release period of 60-120 days and content of K larger than or equal to 56%. The invention also relates to the preparation method of the composition. The novel controlled-release rice topdressing composition disclosed by the invention has a unique formula and can be used for effectively reducing rice topdressing frequency and reducing the topdressing cost; and secondary topdressing is not needed, primary topdressing is realized, and the novel controlled-release rice topdressing composition has remarkable using effects and economic benefits.

The invention discloses a lotus long-acting environmental-protection organic fertilizer, and a preparation method thereof. The lotus long-acting environmental-protection organic fertilizer comprises cow dung, chicken manure, pig dung, pond mud, soybean beanpod, quicklime, corn vinasse, an organic fertilizer fermentation microbial inoculum, and corn straw powder. The preparation method comprises following steps: cow dung, chicken manure, and pig dung are mixed, and quicklime is added so as to obtain livestock and poultry manure; the livestock and poultry manure is divided into a livestock and poultry manure component A and a livestock and poultry manure component B; the livestock and poultry manure component A is dried and smashed so as to obtain manure powder; the manure powder is mixed with soybean beanpod and corn vinasse, and fermentation is carried out so as to obtain fermented farmyard manure; the fermented farmyard manure, the livestock and poultry manure component B, the organicfertilizer fermentation microbial inoculums, and corn straw powder are mixed to be uniform so as to obtain the lotus long-acting environmental-protection organic fertilizer. The lotus long-acting environmental-protection organic fertilizer is comprehensive in organic components, fertilizer effect is stable and lasts long, and no environment pollution is caused.

The invention relates to a controlled-release bulk blending fertilizer for complete-quantity fertilizing and clean production of rice, and preparation and application methods. The controlled-release bulk blending fertilizer is especially applicable to Yellow River irrigation areas, and is characterized by comprising the compositions in parts by weight, 25-27 parts of urea, 40-42 parts of controlled-release coated urea, 12-14 parts of calcium triple superphosphate, and 19-21 parts of potassium chloride. The controlled-release bulk blending fertilizer has the beneficial effects that the fertilizer is prepared according to nutrient demands of crops, requirements for the production technology and equipment are simple and operatability is high; no fixed input is needed, and the controlled-release bulk blending fertilizer is prepared by adding ready-made fertilizer components into the controlled-release coated urea which is simply produced through a pan granulator, and performing physical mixing through a stirrer or an intelligent fertilizer blending machine; the production technology is simple, employed equipment requires less land occupation, and equipment investment is 20-30% of that of common composite fertilizer production equipment.

The invention discloses pesticide fertilizer capable of killing insects, preventing diseases and enhancing plant immunity. The pesticide fertilizer is prepared from the following raw materials in percentage by weight: 0.35 to 0.55 percent of chlorantraniliprole.thiamethoxam, 0.11 to 0.25 percent of chlorantraniliprole, 0.15 to 0.30 percent of thiamethoxam, 35 to 55 percent of basic fertilizer, 4.5to 6.5 percent of a dispersant, 1.5 to 3.5 percent of a wetting agent and 25 to 30 percent of filler. According to the pesticide fertilizer disclosed by the invention, the number of times of plant insect killing and top application is reduced, the labor load of farmers is alleviated and the yield of grains is increased; the pesticide fertilizer also contains a lot of element nitrogen and variousmicroelements, such as zinc, manganese, boron and magnesium, so that the immunity of plants is effectively enhanced and the insect-killing and disease-preventing effects are improved.

The invention discloses a high-quality and high-yield fertilization method for continuous-cropping planting of watermelon in a greenhouse. The high-quality and high-yield fertilization method comprises the following steps: (1), applying a high-concentration balanced humic acid complex organic-inorganic compound fertilizer, a high-concentration high-potassium humic acid complex organic-inorganic compound fertilizer and a humic acid trace element organic fertilizer at the bottom; (2), topdressing by using a high-concentration high-nitrogen humic acid complex organic-inorganic compound fertilizerin a vine climbing period of the watermelon; (3), after young watermelons are stably set, topdressing by using the high-concentration high-potassium humic acid complex organic-inorganic compound fertilizer. By the high-quality and high-yield fertilization method, a bottom fertilizer is high in humic acid content and large in using amount, a root system of the watermelon is developed and not prosperous, a foliar fertilizer is not required to be sprayed, the yield of the watermelon is 8000kg per mu (a Chinese area unit), the sugar content of the watermelon is 15-30% higher than that of graftedwatermelon, the soil structure is effectively improved and the ecological functions of soil are optimized and improved; the number of topdressings and the number of pesticide applications are reducedwhile high yield is achieved, so that the goal of simplifying the farming operation is achieved, cost reduction and efficiency improvement are achieved, environmental threat caused by unreasonable application of the fertilizer is reduced and a guarantee is provided for income increase of grain farmers and sustainable agricultural development.

The invention relates to a special fertilizer for maca planting and a preparation method thereof, belonging to the technical field of fertilizers. The special fertilizer for maca planting comprises the following components in parts by weight: 25-35 parts of chicken manure, 8-12 parts of plant ash, 4-6 parts of cake fertilizer, 9-12 parts of calcium magnesia phosphate fertilizer, 0.01-0.05 part of boric fertilizer, 0.04-0.08 part of zinc fertilizer and 40-50 parts of crop straw. The preparation method of the special fertilizer for maca planting is simple; and the prepared product can be directly applied as a base fertilizer, contains multiple necessary minor elements for crops, including zinc, boron, molybdenum and the like, can reduce the pesticide application amount, lowers the cost, promotes the development of the crops, enhances the photosynthesis utilization ratio, can reduce the supplementary fertilizer consumption by 25-40%, has the advantages of scientific raw material proportioning and low production cost, fills up the blank in the field of special fertilizers for maca planting, and is easy for popularization and application.

The invention discloses multifunctional carbon-based organic-inorganic compound fertilizer and a preparation method thereof. The compound fertilizer is prepared from the following components in percentage by weight: 5 to 10 percent of urea, 5 to 10 percent of formaldehyde, 25 to 35 percent of mushroom dregs or lotus leaf black charcoal, 20 to 30 percent of calcium magnesium phosphate, 10 to 20 percent of potassium sulfate, 5 to 15 percent of attapulgite and 5 to 15 percent of kaolin; finally, a finished product of granulated multifunctional carbon-based organic-inorganic compound fertilizer isprepared. A compound fertilizer formula disclosed by the invention has the functions of providing nutrients and regulating acidity; the problem of soil degradation brought by an existing fertilizingformula is solved; the multifunctional carbon-based organic-inorganic compound fertilizer has the functions of improving soil, increasing yield and quality of crops and improving the quality of the crops.

The invention discloses farm manure for planting lotus roots and a preparation method thereof. The farm manure for planting the lotus roots is prepared from the following raw materials: cow dung, fowlmanure, pig manure, pond mud, soybean pods, quick lime and corn distillers' grains; the preparation method comprises the following steps: adding the quick lime into livestock manure and mixing and reacting for 30 to 60min; then adding the pond mud; after uniformly mixing, drying and crushing to obtain manure powder; mixing the manure powder, the soybean pods and the corn distillers' grains and putting a mixture into a fermentation tank; carrying out first-time anaerobic fermentation, aerobic fermentation and second-time anaerobic fermentation in sequence to obtain the farm manure for plantingthe lotus roots. The farm manure for planting the lotus roots, provided by the invention, has the characteristics of complete composting, sufficient sterilization, simple production technology, goodfertilizer efficiency and the like.

The invention discloses a compound fertilizer for camellia flower. The compound fertilizer is prepared from the following raw materials in parts by weight: 20 to 40 parts of monopotassium phosphate, 20 to 30 parts of calcium ammonium nitrate, 8 to 18 parts of potassium-magnesium salt, 8 to 16 parts of diaminoferric xanthohumate, 30 to 40 parts of bean dregs, 45 to 65 parts of pigeon feces, 25 to 45 parts of straw powder, 8 to 18 parts of peanut shell powder, 20 to 40 parts of radish leaf, 20 to 30 parts of humic acid, 3 to 6 parts of kieselguhr, 10 to 18 parts of calcium sulfate, 4 to 8 parts of calcium magnesium silicate, 2 to 4 parts of zinc sulfate, 4 to 10 parts of zeolite powder, 4 to 8 parts of montmorillonite compound gelatin, 2 to 4 parts of Chinese medicine residue and 0.5 to 1.5 parts of EM bacteria solution. The compound fertilizer is directly mixed with soil before the camellia flower is cultivated, so that later topdressing times can be reduced, moreover, toxic and harmful substances in the soil can be effectively adsorbed, soil hardening is relieved, and pests and bacteria in the soil, which affect the growth of the camellia flower, are effectively inhibited.

The invention relates to a special corn fertilizer with a slow-release effect. The special corn fertilizer is prepared from the following raw materials in parts by weight: 40-42 parts of oxamide, 12-14 parts of urea, 23-26 parts of phosphate fertilizer, 17-18 parts of potassium fertilizer, 1-3 parts of zinc fertilizer and 4-7 parts of bentonite. The total nutrient content of the special corn fertilizer is 44%-47%, wherein the effective content of nitrogen N is 23%-24%, the effective content of phosphorus P2O5 is 11%-12%, and the effective content of potassium K2O is 10%-11%. The special fertilizer has the advantages such as high nitrogen content, long fertilizer effect, high fertilizer utilization rate and obviously increased yield, the topdressing frequency can be reduced, the labor and time can be saved, and the dosage per mu is 40-50kg.

The invention discloses a special organic compound fertilizer for improving soil and increasing yield of rice and a preparation method of the special organic compound fertilizer. The special organic compound fertilizer contains the following raw materials: livestock excrement, rice bran, cottonseed meal, bean pulp, agricultural rare earth, pyrolignucs acid, a fertilizer fermenting agent, a biological function bacteria liquid, inorganic fertilizer compound particles and a film coating liquid. According to the special organic compound fertilizer and the preparation method, an organic fertilizer,an inorganic fertilizer and a pesticide are reasonably compounded and mixed, and the components of the fertilizer are controllably released, so that the effects of high yield, high quality, efficientnutrient utilization, soil improvement and the like of rice are achieved.