Potassium polyphosphate slow-release fertilizer for corns, and production method of potassium polyphosphate slow-release fertilizer

Abstract

The invention relates to potassium polyphosphate slow-release fertilizer for corns, and a production method of the potassium polyphosphate slow-release fertilizer. The potassium polyphosphate slow-release fertilizer is prepared from the following raw materials in parts by weight: 55-65 parts of urea, 45-50 parts of potassium polyphosphate, 10-15 parts of diammonium hydrogen phosphate, 0.5-0.8 part of magnesium sulfate, 0.4-0.6 part of calcium nitrate, 1.5-2.0 parts of trace elements, 8-10 parts of bone meal, 5-10 parts of humic acid, 10-15 parts of rotten cow dung, 4-6 parts of derris trifoliata and 10-15 parts of a slow-release agent. The potassium polyphosphate slow-release fertilizer for the corns is prepared according to the nutrient uptake features of corn growth; the produced potassium polyphosphate slow-release fertilizer is rich and balanced in nutrition and rich in various nutrients as well as medium and trace elements, and can rapidly supplement the nutrients needed by the corns in a long-acting way. Furthermore, the nutritional ingredients in the fertilizer can be slowly released, so that the fertilizer efficiency is lasting, and the utilization rate of the fertilizer is facilitated to be increased; the potassium polyphosphate slow-release fertilizer has the effects of increasing both production and income and increasing the quality of the corns.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a potassium polyphosphate slow-release fertilizer for corn and a production method thereof, belonging to the technical field of fertilizer production. Background technique [0002] Corn (scientific name: Zea mays), also known as corn, corn, corn, cob; is an annual grass herb, an important food crop and an important source of feed. The history of corn cultivation in my country is about 470 years. At present, my country's sown area is about 300 million mu, second only to rice and wheat, ranking third among food crops, and second only to the United States in the world. Corn is planted all over China, especially in the Northeast, North and Southwest provinces. Corn is a good health product in coarse grains, and eating corn is quite beneficial to human health. According to research, every 100 grams of corn contains 106 kcal of calories, 2.9 grams of cellulose, 4.0 grams of protein, 1.2 grams of fat,...

AI Technical Summary

Problems solved by technology

However, the coating materials currently used for coated slow-release fertilizers are usually non-fertilizer polymers, which have low effective fertilizer content, high product costs, and high prices of non-fertilizer polymers, which eventually lead to low yields of corn and will also affect the soil. environment poses risks

At present, there are still the following problems in corn planting: First, slow-release fertilizers are not highly targeted, and the nitrogen, potassium, phosphorus and other minerals required by different crops are not the same, and the selection of slow-release fertilizers that are not highly targeted will easily cause waste and waste. Soil pollution is not conducive to increasing production; second, due to the influence of membrane materials and production process costs, the price of slow-release fertilizers is high, which limits its promotion and application; third, the selected coating materials are inappropriate, which will damage the soil structure

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