Composite slow release fertilizer

Abstract

The invention discloses a composite slow release fertilizer, comprising the following raw materials in proportion by weight: urea, monoammonium phosphate, calcium superphosphate, calcium magnesium phosphate, potassium sulfate, zinc sulfate, manganese sulfate and aluminosilicate. The composite slow release fertilizer provided by the invention has the characteristics of small usage amount, high yield and reasonable proportion, can be used for improving soil structures, eliminating soil hardening, balancing soil PH values, improving the use ratios of soil nutrients, increasing types and activity of beneficial microorganisms in soil, facilitating crops to take root and fully absorb nutrition, fully adsorbing heavy metal and medicine residues in the soil and creating a pollution-free living environment for root segments of plants. In addition, the fruit is environment-friendly and pollution-free. The composite slow release fertilizer provided by the invention is especially suitable for soybean, green Chinese onion, wheat, potato, citrus and watermelon; and the raw materials for preparing the composite slow release fertilizer are simple and economical, the invest is small, and the output value is high.

Description

technical field [0001] The invention discloses a composite slow-release fertilizer, specifically an aluminosilicate composite slow-release fertilizer. Background technique [0002] my country is a large agricultural country, with an area of ​​1.3 mu per capita. It is one of the countries with a large population and little land in the world. The population increases, the land area decreases, and desertification occurs. Due to the excessive use of chemical fertilizers, the soil is hardened and salinized. By 2030, the per capita area will be The land area will be less than 0.8 mu. Land is an important basis for human survival, and food is related to human survival and the prosperity of the nation. The growth of plants depends on soil, sunlight, and water. Different plants have different requirements for soil, sunlight, and water. The fertility and barrenness of the soil play a decisive role in the growth of crops. Therefore, many scientists in the world Soil improvement has don...

AI Technical Summary

Problems solved by technology

Long-term application of monotonous fertilizers and pesticides tends to cause great damage to the soil, harden the soil, cause pH balance imbalance, poor nutrition, deposit harmful mi