A special long-acting slow-release fertilizer for sugarcane

Abstract

The invention discloses a special long-acting slow release fertilizer for sugarcane. The slow release fertilizer contains nitrogen, phosphorus and potassium according to a ratio of 20:12:5. The slow release fertilizer comprises the following raw materials by mass ratio: 96-190 of ammonium dihydrogen phosphate containing 49% of P2O5 and 9% of N, 149-405 of a calcium magnesium phosphate fertilizer containing 18% of P2O5, 398-416 of urea containing 46% of N, 83 of potassium chloride containing 60% of K2O and 0-180 of a packing material. The packing material is a mixture of clay and dry lime sludge in a mass ratio of (3-7):(7-3); and the water content of the dry lime sludge is controlled to be 5%-10%. By utilizing the fertilizer, the emergence rate, tillering rate and plant height of the sugarcane can be effectively increased, the agricultural yield and sugar yield of the sugarcane are obviously improved, and tests prove that the yield per unit and the sugar yield of the sugarcane are improved; and the quality of the sugarcane is obviously improved, and the fertilizer is applicable to soil with the medium fertility in the sugarcane areas of southern tropics and subtropics in China.

Description

technical field [0001] The invention relates to a special long-acting slow-release fertilizer for sugarcane, which belongs to the technical field of fertilizers. Background technique [0002] Sugarcane is an important sugar crop in my country, with a long growth cycle, high production and high nutrient demand. There are two sources for sugarcane to absorb nutrients from the soil. One is the fertilization capacity of the soil itself, which is mainly affected by soil fertility and texture, and the other is the supply by artificial fertilization. In modern sugarcane agriculture, artificial fertilization has become the most important measure for sugarcane production and high-yield and high-sugar cultivation. In the main sugarcane producing areas in my country, common fertilizers are used, and multiple fertilizations are required to meet the nutrients required for sugarcane production. The whole production period of sugarcane generally requires the application of basal fertiliz...

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 yield and sugar content of sugarcane, and at the same time cause Ecological environment pollution in sugarcane area