Cool-season-type grassland slow-release fertilizer

Abstract

The invention discloses a cool-season-type grassland slow-release fertilizer which is prepared from raw materials in parts by weight: 36-38 parts of corrupt leaf earth, 2-3 parts of disodium ethylene diamine tetraacetate, 42-45 parts of rice straws, 22-23 parts of fresh green tea leaves, 10-12 parts of fresh orange peel, 8-9 parts of potassium nitrate, 0.6-0.8 part of ascorbic acid vitamin C, 30-33 parts of sawdust, 3-4 parts of sodium polyphosphate, 1.5-1.7 parts of acetic anhydride, 0.2-0.3 part of 4-dimethylamino pyridine, and an appropriate amount of water. The slow-release fertilizer meets the fertilizer requiring characteristics of cool-season-type grassland, and reduces the withering rate of the grassland in winter; the fresh orange peel and other fermentation products under the complexing action of disodium ethylene diamine tetraacetate reduce the direct nutrient release of the fertilizer in soil and change the supply of easy-to-absorb nutrient elements to the grassland at a low speed, so that the disease resistance and the heat-resisting ability of the grassland in summer are improved, and the yearly green period of the grassland is prolonged.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a cool-season grassland slow-release fertilizer. 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 Acid-base, d...

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