Solanaceous vegetable special purpose controlled-release fertilizer and preparation method thereof

Abstract

The invention discloses solanaceous vegetable special purpose controlled-release fertilizer and a preparation method thereof. The solanaceous vegetable special purpose controlled-release fertilizer comprises particle compound fertilizer and a coating layer. The particle compound fertilizer comprises, by weight, 50 to 58 parts of urea, 13 to 18 parts of diammonium phosphate, 10 to 15 parts of potassium chloride, 10 to 14 parts of potassium sulfate, 1.5 parts of zinc sulfate, 2.5 parts of magnesium sulfate, 0.5 parts of calcium carbonate and 0.5 parts of boric acid. The preparation method comprises A, coating material liquid synthesis, B, granulation, C, coating and D, drying. Through the controlled-release technology, one-step fertilization and continuous feeding are realized so that wastesin the early stage and later stage are avoided. The controlled-release nitrogen fertilizer has a controlled dissolution rate, the dissolution time is controlled in 28 days to 120 days according to different crops, a fertilizer utilization rate is significantly improved and the increasing rate is 30%-70%.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a special controlled-release fertilizer for solanaceous vegetables and a preparation method thereof. Background technique [0002] Solanaceous vegetables are the main cultivated vegetables in my country, mainly tomato, eggplant and pepper, etc. The growth period of solanaceous vegetables is long, and the accumulation of assimilates is the basis of fruit development. Special attention should be paid to the regulation of commercial growth and reproductive growth in production The contradiction between them, to achieve a suitable dynamic balance state, scientific and reasonable fertilization is the key to obtain high yield. Solanaceous vegetables require a high amount of fertilizer and are highly resistant to fertility. A balanced supply of nitrogen, phosphorus, and potassium nutrients is the guarantee for high-yield and high-quality solanaceous vegetables. [0003] The release rate of fertilizer nut...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiency of existing solanaceous vegetable fertilizers, the controlled-release fertilizer cannot effectively control the release of fertilizer nutrients, and there may be secondary pollution. A special controlled-release fertilizer for solanaceous vegetables capable of satisfying the nutrients required for the entire growth process of solanaceous vegetables and a preparation method thereof