Special controlled release fertilizer for preventing and treating root diseases of hot peppers and preparation method of special controlled release fertilizer

Abstract

The invention relates to a special controlled release fertilizer for preventing and treating root diseases of hot peppers and a preparation method of the special controlled release fertilizer. The special controlled release fertilizer is prepared by accurately compounding sulphur and high polymer coated urea, thermoplastic and thermosetting double-layer coated urea, urea undercoat modified epoxy resin coated diammonium phosphate and urea undercoat modified epoxy resin coated potassium nitrate with a potassium sulfate composite fertilizer, a trace element fertilizer and a granular pesticide. The special controlled release fertilizer is used for being applied to a vegetable field, is all applied to the bottom of a planting trench in one step before the hot peppers are transplanted, is used for preventing and treating pest and disease damage to the roots of the hot peppers. The requirements of the hot peppers on nitrogen, phosphorus and potassium in each growth period are met and the output of the hot peppers is improved.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer for capsicum, in particular to a special controlled-release fertilizer for capsicum used in facility soil and capable of preventing root diseases and a preparation method thereof, belonging to the technical field of production and application of controlled-release fertilizers. Background technique [0002] Capsicum is a crop that is susceptible to soil-borne diseases. In recent years, the planting area of ​​capsicum in greenhouses and greenhouses has continued to increase, the multiple cropping index has increased, and the phenomenon of blind fertilization has become serious, resulting in imbalances in soil nutrients, capsicum root rot, bacterial wilt, and root-knot nematodes. Severe soil-borne diseases such as disease. And most of these diseases occur in seedling infection. The usual prevention and treatment method is to take medicine when the onset occurs, but it is too late. [0003]...

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Problems solved by technology

[0003] Chinese patent document CN101234928A (200810014188.X) discloses a series of controlled-release fertilizers produced by sulfur-added resin coating materials by compounding the method for producing capsicum-specific controlled-release fertilizers, although the nutrient release of this controlled-release fertilizer has the same characteristics as pepper growth and The effect of synchronous nutrient absorption, but its shortcomings are: first, the nutrient distribution ratio is designed for the nutrient absorption of pepper, without considering the difference of soil nutrients; secondly, it does not have the effect of preventing early root diseases of pepper

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