Green and safe compound slow release fertilizer used for rice

Abstract

The invention discloses a green and safe compound slow release fertilizer used for rice. The compound slow release fertilizer comprises the following raw materials in parts by weight: 40-50 parts of fermented chicken manure, 20-30 parts of fermented silkworm excrement, 8-16 parts of river channel silt, 2-4 parts of coal gangue powder, 10-20 parts of peanut meal, 8-16 parts of turfy soil, 0.1-0.2 part of an EM microbial agent, 45-55 parts of urea, 30-50 parts of calcium triple superphosphate, 22-30 parts of potassium chloride, 4-8 parts of chitosan, 2-4 parts of vermiculite powder, and 2-4 parts of cyclodextrin. The compound slow release fertilizer disclosed by the invention can provide sufficient nutrients for rice growth, and has an extremely-good slow release effect; the compound slow release fertilizer can improve soil hardening caused by long-term use of a chemical fertilizer, and increase soil permeability; and the compound slow release fertilizer has low costs, and remarkable effects of increasing a yield and quality of the rice.

Description

Technical field [0001] The invention relates to the technical field of fertilizers, in particular to a green and safe compound slow-release fertilizer for rice. Background technique [0002] At present, with the application of a large amount of chemical fertilizers, the active part of the elements required by rice is gradually inactivated, forming substances that are not easily absorbed, such as calcium phosphate and calcium silicate, resulting in lower and lower utilization rates of fertilizers applied to the soil. The hardening is serious, the planting cost is getting higher and higher, and the output is getting lower and lower, which has a serious impact on the health of consumers. Summary of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a green and safe compound slow-release fertilizer for rice, which can not only provide sufficient nutrients for the growth of rice, and has an excellent slow-release...

AI Technical Summary

Problems solved by technology

[0002] At present, with the application of large amounts of chemical fertilizers, the active parts of the elements required by rice are gradually passivated, forming substances that are not easily absorbed, such as calcium phosphate and calcium silicate, resulting in lower and lower utilization rates of fertilizers applied to the soil. The hardening is serious, the cost of planting is getting higher and higher, and the output is getting lower and lower, which has a serious impact on the health of the eaters.