Sustained oxygen release fertilizer and preparation method thereof

Abstract

The invention discloses a sustained oxygen release fertilizer which adopts a mixture comprising calcium superoxide, sodium bentonite and polyvinyl formal. The mass ratio of sodium bentonite to calcium superoxide is 12 to 5, and the mass of the polyvinyl formal is 15 percent of the gross mass of the sustained oxygen release. The sustained oxygen release fertilizer discusses the oxygen release feature and the pH value variation in the condition of aqueous medium. Experimental results show that compared with applying calcium superoxide powder only, the sustained oxygen release fertilizer has the characteristics that the fertilizer effect period is long, the applying method is simple, the production technology is simple, the source of material selected is wide, the material is environmentally friendly, and the sustained oxygen release fertilizer can be widely applied.

Description

Technical field: [0001] The invention relates to the field of agricultural and forestry slow and controlled release oxygen fertilizer and its preparation, especially a kind of fertilizer with good slow control performance, long fertilizer effect period, high bioavailability and environment friendly, which can be used for long-term slow-release fertilizers such as flooded plants. Novel oxygen fertilizer for supplying oxygen in a controlled release and a preparation method thereof. Background technique: [0002] my country has an East Asian monsoon climate, with an unstable climate system, and large seasonal and regional changes in rainfall; the long-term population growth and the pressure of social and economic development have intensified the contradiction between man and nature, making my country's flooding disaster environment It is more sinister, especially in the eastern and central regions of my country. Wet damage is widely distributed in my country, and there are diff...

AI Technical Summary

Problems solved by technology

The existing oxygen fertilizer is mainly the direct application of calcium peroxide, which is mainly used for small-scale agricultural planting (such as seed growth and germination), aquaculture, food preservation, etc. , to generate calcium hydroxide to make the pH value of the aqueous solution as high as 12-13. Direct application to flooded plants will seriously affect the soil pH, resulting in soil colloidal compaction and salinization, and corroding the roots of plants, thus affecting the normal growth of plants.

At the same time, the direct application of calcium peroxide cannot play a role in slowly controlling the release of oxygen, and the fertilizer retention performance is not ideal. It is difficult to control the dosage in the actual application process, and it cannot be reasonably and evenly distributed.

[0004] In addition, many studies have shown that the current effective utilization rate of inorganic fertilizers in my country is only 30% to 35%, causing serious economic losses and environmental pollution.

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