Long-acting compound fertilizer specially used for maize and preparation method thereof

Abstract

The invention relates to a long-acting compound fertilizer specially used for maize, which includes, by weight, 20-30 parts of urea, 15-20 parts of triple superphosphate, 5-10 parts of potassium chloride, 25-35 parts of active humic acid powder, 1-8 parts of caustic-burned magnesia powder, 1-5 parts of long-acting slow-releasing agent, 0.5-2 parts of microelements, 0.1-1 part of a compound microbial agent, and 5-15 parts of decayed organics. According to the ratio of required nutrients in a production period, a development period and a mature period of maize, the components are compounded reasonably; meanwhile, by adding the long-acting slow-releasing agent, the active humic acid powder, the microelements, the compound microbial agent and the like, problems of short acting time, low utilization rate and environment pollution in conventional single fertilizers, composite fertilizer and special fertilizer for maize as well as topdressings of the three fertilizers are solved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, and relates to a special compound fertilizer for long-acting corn and a preparation method thereof. Background technique [0002] Corn is one of the important grains in my country. The sown area and total output of corn rank third after rice and wheat. Corn is mainly planted in North China, Northeast China, and Northwest my country. Due to the differences in natural conditions in different regions, the planting methods in different regions are different, and the yield and quality have certain differences. Due to the influence of the traditional concept of fertilizer use, farmers focus on a single chemical fertilizer for corn, and apply nitrogen, phosphorus, and potassium fertilizers separately. The results are: single fertilizer effect, short fertilizer effect, and low fertilizer utilization rate (only about 30%). Most of the effective nutrients have been lost and cannot supply the needs of ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a special compound fertilizer for long-acting corn and its preparation method, which can be reasonably proportioned according to the ratio of nutrient requirements in the production stage, development stage, and maturity stage of corn, and at the same time add long-acting slow-release agent and active humic acid , trace elements and compound microbial agents and other components, thus solving the problems of traditional unit fertilizer, compound fertilizer, corn special fertilizer and topdressing of these three fertilizers, such as short fertilizer effect period, low utilization rate, and environmental pollution.