Long-acting environment-friendly coated slow release compound fertilizer used for planting oryza sativa and preparation method thereof

Abstract

The invention provides a long-acting environment-friendly coated slow release compound fertilizer used for planting oryza sativa and a preparation method thereof. The slow release compound fertilizer comprises core fertilizer granules and a coating layer coating the surfaces of the core fertilizer granules. The slow release compound fertilizer has the beneficial effects that the slow release compound fertilizer comprises core fertilizers and the coating layer coating the surfaces of the core fertilizers; due to the bilayer structure, the slow release effects are more obvious, the effective period of the fertilizer is long and topdressing is not needed in the planting process; both the core fertilizers and the coating layer are made of organic degradable materials, so that the fertilizer efficiency can be maintained in the gradual degradation process; the core fertilizers are rich in trace elements, thus improving the nutritive value of oryza sativa; under the degradable premise, the soil properties can be also improved; and the fertilizer components are friendly to soil, are low in production cost, are beneficial to market promotion and have good economic benefits.

Description

technical field [0001] The invention relates to a long-acting environment-friendly coated slow-release compound fertilizer for rice planting and a preparation method thereof. Background technique [0002] Rice (scientific name: Oryza sativa) is a kind of herbaceous Oryza genus, and it is also the most important and longest one as food in Oryza genus. It is also called Asian cultivated rice, and it can also be said to be rice in simple terms. It is an annual, gramineous plant, monocotyledonous, sexually warm and humid, about 1 meter high when mature, with slender leaves, about 50 to 100 cm long and 2 to 2.5 cm wide. The flowers of rice are very small. When blooming, the main flowering branches will be arched, and small flowers will bloom between 30 and 50 cm below the branches. Most of them are self-pollinating and set seeds, which are called rice spikes. Generally, the size of the rice ear is 5 to 12 mm long and 2 to 3 mm thick. [0003] About half of the world's people ea...

AI Technical Summary

Problems solved by technology

In addition, a large number of Chinese farmers have migrated to cities to work, resulting in a shortage of young and middle-aged labor in rural areas, resulting in increased labor costs in large-scale agricultural production, especially bulk crops that require multiple fertilization, which is not only labor-intensive and time-consuming, but also inconvenient topdressing at the later stage of crop growth and increased production costs , the fertilizer effect is short and many elements stay in the soil after fertilization. Over time, some elements in the soil are excessive. Fertilization again may burn the seedlings, and excessive fertilization will also deteriorate the soil quality. Not only will it affect the yield, but it will also reduce the dwindling area of ​​agricultural land in our country, resulting in a reduction in grain production, forming a vicious circle. In addition, the added elements in the existing rice fertilizer will also pollute the water quality and affect the environment.

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