A kind of biological compound fertilizer that promotes crop root growth and preparation method thereof

Abstract

The invention relates to a biological compound fertilizer capable of promoting growth of crop roots. The biological compound fertilizer is prepared from the following components in parts by weight: 20-40 parts of inorganic composition, 30-50 parts of organic composition, 4-8 parts of composite bacterial powder, 5-10 parts of potassium fulvate, 10-20 parts of ammonium calcium nitrate, 5-15 parts of mannitol, and 5-10 parts of bentonite, wherein the composite bacterial powder is composed of Bacillus subtilis, Bacillus licheniformis, Bacillus laterosporus, photosynthetic bacteria and actinomyces. According to the biological compound fertilizer, based on the mutual action principle of plant-microorganism-soil and active response principle of roots to environment, two aspects of rhizospheric microorganisms and fertilizer nutrients are taken as points of penetration, on the basis of meeting the nitrogen, phosphorus and potassium nutrients needed by crops, the air permeability of the soil is regulated by organic matters, the effective absorption of calcium is promoted by chelating calcium ions with mannitol and potassium fulvate, and meanwhile fully water-soluble potassium fulvate has the function of regulating plant growth, so that extended growth of the crop roots and generation of fibrous roots are stimulated so as to finally achieve the effects of promoting growth and development of the plants and improving the yield.

Description

technical field [0001] The invention relates to a biological compound fertilizer, in particular to a biological compound fertilizer for promoting the growth of crop roots and a preparation method thereof. Background technique [0002] The root system, as the crop's overall water and fertilizer resource capturer and an important organ for synthesizing various physiologically active substances, is closely related to soil moisture, nutrient distribution, migration and consumption. The ability to absorb and utilize water and nutrients directly affects the establishment of the aboveground canopy of crops, the distribution of assimilates and the formation of final yield. Optimize the root system function, regulate the growth and development of the whole plant through the root system, so as to achieve the purpose of high yield, high efficiency and high quality. [0003] Different water and fertilizer measures have obvious regulatory effects on the physiological activities of crop ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing conventional compound fertilizers mainly focus on the supply of nitrogen, phosphorus and potassium nutrients, while ignoring the phenomenon of soil compaction and acidification and plant root growth obstruction caused by excessive amounts of nutrients; conventional microbial fertilizers focus more on improving fertilizer utilization, improving soil, Improve the development of crop resistance and other aspects, and the root system that affects crop yield lies in the root system of the crop. Only when the root system is developed can it absorb nutrients better, and the plant can grow vigorously, so as to obtain high yield

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