Slow-release fertilizer dedicated for grassland maintenance

Abstract

The invention discloses a slow-release fertilizer dedicated for grassland maintenance, wherein the slow-release fertilizer is prepared from the following raw materials in parts by weight: 9-11 parts of oil shale ash, 36-38 parts of furfural residues, 19-21 parts of coal mud, 3-4 parts of tamarind polysaccharide gum, 7-9 parts of ammonium hydrogen carbonate, 13-15 parts of fresh green tea leaves, 0.3-0.4 part of ascorbic acid vitamin C, 0.5-0.6 part of acetic anhydride, 4-5 parts of potassium citrate, 1-2 parts of a bamboo leaf flavone powder, 29-31 parts of rice straw, 0.2-0.3 part of 4-dimethylaminopyridine, and a proper amount of water. The slow-release fertilizer is adequate in nutrients and good in slow release, can maintain the normal growth of a lawn for a long term after one-time application, and reduces manpower and fertilizers required for the grassland maintenance; with addition of the oil shale ash, the bamboo leaf flavone powder and the like, the physicochemical properties of soil are improved, the soil loose characteristic is improved, breeding of the beneficial flora is promoted, then the growth of grassland common pathogenic bacteria is hindered, and grassland maintenance effects of low cost and high efficiency are realized.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special slow-release fertilizer for grassland maintenance. Background technique [0002] With the increasing level of modernization of agriculture, coated slow-release fertilizers are widely used because of their remarkable high fertilizer efficiency. However, most of the slow-release fertilizers currently on the market are facing many problems. First, a large amount of greenhouse gases are likely to be generated during the preparation process, and are discharged into the atmosphere without control, causing air pollution; second, the coating materials are chemically synthesized. These non-degradable high-molecular polymers, these refractory polymer coating materials are very easy to remain in agricultural soil, causing soil degradation and serious pollution; third, fertilizers are bulky and inconvenient to transport and store; fourth, for special soil environments such as ...

AI Technical Summary

Problems solved by technology

However, most of the slow-release fertilizers currently on the market are facing many problems. First, a large amount of greenhouse gases are likely to be generated during the preparation process, and are discharged into the atmosphere without control, causing air pollution; second, the coating materials are chemically synthesized. These non-degradable high-molecular polymers, these refractory polymer coating materials are very easy to remain in agricultural soil, causing soil degradation and serious pollution; third, fertilizers are bulky and inconvenient to transport and store; fourth, for special soil environments such as Acid-base, drought-humidity, soil lacking some elements, and nutrient requirements of specific crops are not effectively targeted