Whole-course one-time applied cotton dedicated controlled release fertilizer, and preparation method and application thereof

Abstract

The invention relates to a dedicated controlled release fertilizer, and in particular to a whole-course one-time cotton dedicated controlled release fertilizer directly applied to the bottom of nutrition bowl seedlings, and a preparation method and an application thereof. The cotton dedicated controlled release fertilizer is prepared according to the law of demands of cotton on nitrogen, phosphorus, potassium and trace elements, soil characteristics, an ecological environment and the like. Only when the nutrition bowl seedlings are transplanted and planted, holes are punched in a planting field, the fertilizer is applied into the holes, then nutrition bowls are put on the top of the fertilizer, the fertilizer is applied at a time to the bottoms of the nutritional bowls, and thus all needs of the cotton during a growth period can be satisfied; fertilizing and transplanting are synchronously carried out without punching the holes again, thus two more times of fertilizing are decreased, and the total input costs of farmers are reduced. The fertilizer utilization ratio is improved, the fertilizer applying amount is reduced, and the fertilizer loss is reduced.

Description

technical field [0001] The invention relates to a special controlled-release fertilizer, in particular to a special controlled-release fertilizer for cotton which is directly applied to the bottom of the seedling nutrient bowl during fertilization and applied at one time in the whole process, as well as its preparation method and application, belonging to the technical field of slow / controlled release fertilizer . Background technique [0002] Due to the blind abuse of traditional chemical fertilizers and the low utilization rate of fertilizers, the salinization, acidification and heavy metal pollution of soil in our country are becoming more and more serious. Cotton is one of the main economic crops in my country. Compared with rice, wheat, corn and other field crops, cotton has a long growth period, requires a large amount of fertilizer, has many times of conventional fertilization, and is inconvenient for topdressing. Therefore, the development of green, environmentally ...

AI Technical Summary

Problems solved by technology

However, this kind of fertilizer has the following disadvantages: 1) The growth period of cotton is long, while the fertilizer effect of quick-acting fertilizer is short. In addition, high temperature and rainy during the growth period of cotton, a large part of quick-acting fertilizer will be washed to the ground with the soil, resulting in the loss of fertilizer , therefore, during the growth period of cotton, topd...

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