53results about How to "Meet absorption requirements" patented technology

The invention relates to a special controlled release fertilizer for Chinese cabbages and a preparation method thereof. The invention is compounded by compositions of 4 percent of thermoplastic resin coated potassium nitrate, sulphur coated compound fertilizer, 4 percent of thermoplastic resin coated carbamide, sulphur coated carbamide, diammonium phosphate, etc. The special controlled release fertilizer for the Chinese cabbages of the invention is served as a base fertilizer to be applied once before sowing and is unnecessary to do dressing, thus acquiring relatively good yield-increasing effect, improving the utilization ratio of the fertilizer and saving labor and time.

The invention relates to a special resin-coated controlled-release fertilizer used for a lawn and a manufacturing method thereof. The special fertilizer is made by compounding 6 per cent thermoplastic resin-coated potassium nitrate, 7 per cent thermoplastic resin-coated ammonium phosphate, 6 per cent thermoplastic resin-coated diammonium phosphate, 7 per cent thermoplastic resin-coated diammonium phosphate, 4 per cent thermoplastic resin-coated urea, 5 per cent thermoplastic resin-coated urea, 6 per cent thermoplastic resin-coated urea, 7 per cent thermoplastic resin-coated urea 8 per cent thermoplastic resin-coated urea, potassium chloride compound fertilizer, etc. The special controlled-release fertilizer used for a lawn of the invention is manured once in October every year and the dressing is avoided. The invention has a good effect on increasing yield and can improve the utilization ratio of the fertilizer and save labor.

The invention relates to a preparation method of a special disposable mechanically-applied fertilizer for corn. According to the invention, urea, monoammonium phosphate, potassium chloride and zinc sulfate are compounded, a high-tower granulated compound fertilizer is used as the core fertilizer, and double film layers are coated, wherein the inner layer film is a urea film and used for improving the surface characteristic of the fertilizer granules, and the outer layer film is a thermoplastic resin coating and a thermosetting coating and is used for controlling the release of the nutrients. The special mechanically-applied fertilizer for corn has more smooth and harder surface, and is suitable for mechanical application. The fertilizer satisfies the requirements of corn for absorbing nitrogen, phosphorus, potassium, zinc and other nutrients; and the large-scale field test proves that the fertilizer has favorable yield increase effect.

The invention discloses a special controlled-release fertilizer for sulphur resin coated chestnut and a preparation method thereof. The special controlled-release fertilizer for sulphur resin coated chestnut is prepared with 4 percent sulphur resin coated compound fertilizer, 3 percent sulphur resin coated compound fertilizer, 3 percent sulphur resin coated urea, 5 percent sulphur resin coated potassium sulphate compound fertilizer, etc. The special controlled-release fertilizer for sulphur resin coated chestnut is applied in one go before the budding in spring, thereby reducing the harm of fertilizations to chestnut roots. The special controlled-release fertilizer for sulphur resin coated chestnut can meet the demand for nitrogen, phosphor, and potassium by chestnut in the annual growth period, thereby increasing the production effectively.

The invention relates to a controlled-release zinc fertilizer and a preparation method thereof. As for the controlled-release zinc fertilizer provided by the invention, the zinc sulfate heptahydrate, weathered coal, urea and bentonite are compounded and granulated to form a core zinc fertilizer; then the core zinc fertilizer is enveloped by the molten sulfur; finally, the zinc / sulfur-coated fertilizer is further enveloped by the modified epoxy resin material to obtain three kinds of two-layer enveloped zinc fertilizer with different envelope thicknesses; and moreover, the zinc fertilizer with different envelop thicknesses is subjected to secondary compounding so that the nutrient release time of the produced controlled-release zinc fertilizer in soil is long, the release speed is uniform, and the needs of the crops in one year can be met by once application.

The invention provides a special organic-inorganic mixed fertilizer for grapes, and a preparation method of the special organic-inorganic mixed fertilizer for grapes, belonging to the field of special fertilizer for plants. The mixed fertilizer comprises the following substances in parts by weight: 350-400 parts of organic fertilizer, 50-70 parts of soil fertility intensifier, 80-120 parts of monoammonium phosphate, 160-200 parts of urea, 6-10 parts of ammonium nitrate, 10-30 parts of potassium sulfate, 3-4 parts of carboxymethylcellulose, 0.3-0.5 part of boric acid, 0.5-0.7 part of cartap, and 1-3 parts of chlorothalonil. The special organic-inorganic mixed fertilizer for grapes is formed by compounding different raw materials according to absorption rules of grapes; and with the adoption of the special organic-inorganic mixed fertilizer for grapes, output can be increased and the quality of grapes is improved, damage to roots of grapes due to multiple fertilizer application is avoided, and the fertilizer efficiency is prolonged.

The invention relates to special bio-organic fertilizer for liquorice and a preparation method thereof. The special bio-organic fertilizer comprises the following raw materials in parts by mass: 20-35 parts of vegetable oil residue, 25-40 parts of ginger plant, 15-30 parts of peanut plant, 10-25 parts of scarp and 0.5-2 parts of EM composite microbe agent. The special bio-organic fertilizer is prepared by a fermenting-curing method based on batch feeding. 300-500kg of the special bio-organic fertilizer is applied to one mu of field per year; during the process of planting the liquorice in thefirst year, the fertilizer is evenly spread on the ground and then buried in soil by ploughing before sowing; and the fertilizer is applied by ditching before germination in spring every year in the future. In the invention, by adopting different organic matters and the fermenting-decompositing method based on batch feeding, the obtained special bio-organic fertilizer basically meets the absorption requirement of liquorice in nutrient proportion and nutrient supply in time periods and has high nutrient content so as to effectively increase the yield of the liquorice; and the fertilizer can reach the standard of production of pollution-free organic products.