The invention relates to the technical field of planting, in particular to a method for overcoming continuous cropping obstacles. According to the method, a conditioner with an alkaline structure is adopted to improve the physical and chemical environments of soil, and by producing ammonia gas through the conditioner with the alkaline structure and ammonium nitrogen fertilizer, the purpose of killing nematodes and other pathogenic microorganisms is achieved. The method not only can effectively control nematodes occurring in vegetable planting, but also can inhibit the growth and reproduction of pathogenic bacteria in the soil, and has the advantages of increasing the soil fertility, promoting the growth of roots and stems, reducing the use amount of chemical fertilizers, and improving theyield and quality of crops.

Method for overcoming continuous cropping obstacles

The invention provides a special liquid fertilizer containing a dinotefuran suspending agent for rice and a preparation method of the special liquid fertilizer. The special liquid fertilizer is prepared from the following raw materials in parts by weight: 5-15 parts of a urea ammonium nitrate solution, 5-15 parts of ammonium polyphosphate solution, 5-10 parts of a potash fertilizer, 0.1-2 parts of microelements, 20-50 parts of water, 0.5-5 parts of 20% dinotefuran suspending agent, 1-2 parts of a soil conditioner, 1-5 parts of natural active organic materials and 1-5 parts of a natural surfactant. The preparation method comprises the steps of adding the prepared urea ammonium nitrate solution and ammonium polyphosphate solution to a mixing tank at the ratio according to a formula, adding the metered other materials to the mixing tank, and mixing, stirring, dissolving and filtering to prepare the liquid fertilizer. The prepared liquid fertilizer has an obvious yield-increasing effect and is a multifunctional environment-friendly fertilizer.

Special liquid fertilizer containing dinotefuran suspending agent for rice and preparation method of special liquid fertilizer

The invention discloses a high-phosphorous type multifunctional ecological micro-fertilizer containing an organic active substance and a preparation method thereof. The high-phosphorous type multifunctional ecological micro-fertilizer is prepared from the raw materials in parts by weight: 340 to 380 parts of ammonium polyphosphate, 140 to 160 parts of potassium humate, 30 to 50 parts of monopotassium phosphate, 15 to 25 parts of potassium sulfate, 4 to 6 parts of boric acid, 110 to 130 parts of urea ammonium nitrate, 20 to 30 parts of humectant, and 700 to 900 parts of water. The preparation method comprises the steps of firstly adding water into a reaction kettle, then adding the potassium humate and stirring for dissolving, and adding the urea ammonium nitrate and the ammonium polyphosphate while stirring until completely dissolving; adding the monopotassium phosphate, the potassium nitrate and the boric acid, and stirring until a solution is clear; adding the humectant for sizing, and obtaining the high-phosphorous type multifunctional ecological micro-fertilizer. According to the high-phosphorous type multifunctional ecological micro-fertilizer containing organic active substance and the preparation method thereof provided by the invention, a production process is simple, the nutrient content is high, the growth of a crop root system can be quickly promoted, the stress resistance of crops is improved, the crop yield is increased, the crop quality is improved, meanwhile, the fertilizer utilization rate is higher, and the economic benefit is remarkably improved.

High-phosphorous type multifunctional ecological micro-fertilizer containing organic active substance and preparation method thereof

The invention provides a multifunctional amino acid-containing high-potassium clear liquid fertilizer and a preparation method thereof. The multifunctional amino acid-containing high-potassium clear liquid fertilizer is prepared from the following raw materials in parts by weight: 380-420 parts of potassium formate, 160-200 parts of potassium pyrophosphate, 50-80 parts of ammonium polyphosphate, 160-200 parts of urea ammonium nitrate, 40-60 parts of glucose, 40-60 parts of proline, 15-25 parts of humectant, and 180-250 parts of plant extract. The multifunctional amino acid-containing high-potassium clear liquid fertilizer is simple to produce and high in nutrient content, and can rapidly promote the growth of crops, improve the stress resistance of crops and meet the requirement of crops for potassium in the whole growth period; the fertilizer is capable of increasing the crop yield and improving the quality of crops; and the utilization rate of the fertilizer is high, leading to a significant increase in economic benefit. The fertilizer disclosed by the invention can be stored and transported at a low temperature, and will not crystallize even after being stored for a long time.

Multifunctional amino acid-containing high-potassium clear liquid fertilizer and preparation method thereof

The invention relates to the field of chemical fertilizers and particularly relates to an ammonium polyphosphate water-soluble fertilizer suitable for synergism in greenhouse vegetable zone and a preparation method thereof. The fertilizer is composed of polyacrylamide, low-molecular organic acids, polyamino acid, and ammonium polyphosphate according to the weight percentages of: 4-6% of the polyacrylamide, 1-3% of the low-molecular organic acids, 0.5-1.5% of the polyamino acid and the balanced being ammonium polyphosphate. When being applied to a vegetable field, the fertilizer can solve problems that phosphorus is difficult to move and a surface-applied water-soluble fertilizer cannot be absorbed by root systems of the plants. On the basis of a macro-molecule carrying function, the phosphorus can move in soil, so that immobilization of the phosphorus fertilizer by metal ions in alkali soil is effectively prevented, and activities of nitrogen and phosphorus are improved. The fertilizeraccelerates growth of vegetables, improves quality, can preserve water and fertility and is free of environment pollution.

Ammonium polyphosphate water-soluble fertilizer suitable for synergism in greenhouse vegetable zone and preparation method thereof

The invention discloses a liquid fertilizer and a preparation method thereof. The liquid fertilizer is mainly prepared from, by weight, urea ammonium nitrate solution 20%-45%, liquid ammonium polyphosphate 10%-40%, potash fertilizer 10%-20%, boric acid 0.6%-1%, compound amino acid chelated microelement 4%-8%, synergistic agent 0.1%-1% and the balance water. The potash fertilizer is one or more of potassium nitrate, potassium chloride, potassium sulfate, potassium pyrophosphate and monopotassium phosphate. The compound amino acid chelated microelement is prepared by a compound amino acid chelate and sulfate through chelating reaction. The materials in the liquid fertilizer are not only environmentally friendly and easy to obtain, but also can provide a variety of nutrients essential for plants effectively. In addition, the utilization rate of the liquid fertilizer nutrients and the production efficiency are greatly improved, and the liquid fertilizer has multiple functions such as soil improvement.

Lin Tianjie

Papers

Liquid fertilizer and preparation method thereof