Method for preparing rare earth multi-microelement chelating additive

Abstract

The invention discloses a method for preparing a rare earth multi-microelement chelating additive. According to the technical scheme, the method includes the steps that an acid-resisting reaction kettle is used for preparing a chelating state solution of various single-component (double-component or three-component) microelements and rare earth; then the input quantity is calculated according to the content of effective nutrients in the microelement and rare earth chelating state solution in accordance with the formula fertilizer production requirement, and the chelating state solution is sequentially sprayed into a carrier-turfy soil; afterwards, the solution enters a roller to be stirred and dried to be turned into the rare earth multi-microelement chelating additive. According to the method, the rare earth and medium trace elements undergo a chelating reaction under the action of ethylenediamine tetraacetic acid (EDTA), so that the absorption and fixation to the additive by soil are reduced, and indissolvable salt is converted into soluble and active salt; the operation of the additive in bodies of plants is accelerated through radiating activity carrying of rare earth elements, and photosynthesis and assimilation participating capacity is improved, so that plant growth and activity are accelerated, and therefore the defect that single supplement of major elements and medium trace elements is purely considered in most of compound fertilizer is overcome, and balanced fertilization is fully achieved.

Description

Background technique [0001] Medium and trace elements are essential for plant growth. Elements with a content of 0.1% to 0.5% in plants, such as calcium, magnesium, sulfur, silicon, etc., are called medium elements, and essential nutrients in plants with a content of 0.2×10-6 to 200×10-6 are called trace elements. , There are 7 kinds of zinc, boron, manganese, molybdenum, copper, iron and chlorine. [0002] At present, most regions in my country are deficient in varying degrees of medium and trace elements, and the range of potential deficiencies of trace elements is far beyond people's general expectations. 5%, 6.9%, 21.3%, 46.8%, 34.5% and 51.5%, the targeted and reasonable application of medium and micro fertilizers can not only increase crop yield, but also have a very obvious effect on improving the quality of agricultural products, and can effectively enhance the quality of crops. Stress resistance to diseases, low temperature, high temperature, and drought. [0003] Ho...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the defects of the background technology. Through the rare earth chelation process, the medium and trace elements are activated, and a large amount of elements are coupled, so as to make a rare earth multi-element chelated compound fertilizer, which effectively solves the problem of single content of large-scale element fertilizers and medium-trace element fertilizers on the market. The fertilizer has a single variety and a single dosage form, and the lack of coordination of most nutrient elements in the process of crop application causes soil pollution, and the nutrient elements necessary for various plants are easily absorbed and fixed by the soil after application, and the utilization rate is low. The purpose of increasing production and income through balanced fertilization

Images