Potassium-containing selenium fertilizer for promoting plant growth and deteriorating pesticide residue

Abstract

The invention discloses a potassium-containing selenium fertilizer for promoting plant growth and deteriorating pesticide residue. The potassium-containing selenium fertilizer adopts the technical scheme that selenious acid is generated firstly and then neutralized by potassium hydroxide so as to obtain potassium selenite. According to the deterioration requirement of different crops and different pesticides, the potassium selenite is prepared into the selenium fertilizer of 'potassium selenite kind' with the pH value of 7.2 to 8.5, and the concentration of 100 ppm to 500 ppm. The potassium-containing selenium fertilizer substitutes sodium selenite (sodium is a redundant element in the fertilizer) to serve as the selenium fertilizer which is sprayed on the leaves of the plant, so that the dual manurial effect of the selenium fertilizer and a common potash fertilizer can be achieved. After the leaves of the plant are sprayed with the fertilizer, the plant can be harvested at different time intervals, so that the effects of increasing the yield and deteriorating pesticide residue can be achieved.

Description

technical field [0001] The invention belongs to special fertilizers in agricultural fertilizers. Background technique [0002] At present, there are many agricultural fertilizers and pesticides. Fertilizers are mainly nitrogen fertilizers, phosphorus fertilizers, potassium fertilizers, compound fertilizers, biological fertilizers, organic fertilizers, trace element fertilizers, etc. Selenium fertilizer is a new variety, which has the effect of significantly increasing crop production. The application of selenium has been done in recent decades. Due to the familiarity with the application of sodium selenite, sodium selenite is used in animals at home and abroad without exception. When selenium fertilizer is applied to plants, there is one kind of In addition to mixed slag as base fertilizer, sodium selenite is also used as selenium fertilizer for foliar spraying without exception. Because it contains selenium, selenium is an element with special physiological activity. Its op...

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Problems solved by technology

[0004] The basic fertilizers for crops are usually nitrogen, phosphorus, and potassium. Nitrogen fertilizers are beneficial to the growth of leaves of crops, phosphorus fertilizers are beneficial to the growth of flowers and fruits of crops, and potassium fertilizers are beneficial to the growth of branches and stems of crops. Now they are used for foliar spraying All selenium fertilizers use sodium selenite without exception. In addition to the above-mentioned role of selenium in promoting growth and increasing production, sodium is an redundant element. Can you use selenium reagents containing nitrogen, phosphorus, and potassium? In this way, the double effect of selenium fertilizer and conventional nitrogen, phosphorus and potassium fertilizers can be obtained after spraying with a kind of selenium fertilizer. No one has raised this issue.

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