Liquid fertilizer prepared from microorganisms and applicable to green vegetables and preparation method of liquid fertilizer

Abstract

The invention discloses a liquid fertilizer prepared from microorganisms and suitable for green vegetables and a preparation method of liquid fertilizer. The liquid fertilizer comprises 1-5 parts of a microbial zymophyte liquid, 10-35 parts of an organic fertilizer, 2-5 parts of nutrient elements, 2-5 parts of chlorophyll, 5-10 parts of potassium salt and 10-20 parts of water. The microbial zymophyte liquid is obtained by respectively fermenting rhizoma bletillae endophytic trichoderma and eucommia endophyte through a culture medium. The preparation method comprises the following steps: adding microorganisms into a carbon source and a nitrogen source according to a certain ratio, conducting fermenting, adding the obtained microbial zymophyte liquid into the organic fertilizer, carrying out secondary fermentation, carrying out solid-liquid separation, adding the nutrient elements, chlorophyll and monopotassium phosphate into secondary fermentation liquid according to prescription amounts, and conducting stirring to dissolve the nutrient elements, the chlorophyll and the monopotassium phosphate, thereby obtaining the liquid fertilizer. The problem that pesticide residues of green vegetables easily exceed the standard and food safety and environment problems caused by long-term excessive use of chemical fertilizer can be solved; and it is guaranteed that the fertilizer can provide sufficient and various nutrients, and meanwhile, natural effective components with a pest control function are added, so operation of farmers is facilitated, the labor cost is reduced, the use of chemical fertilizers and pesticides is reduced, the purposes of improving the edible safety of the green vegetables and effectively utilizing eutrophic fermentation liquor are achieved, and the effect of environmental protection is achieved.

Description

technical field [0001] The invention relates to a liquid fertilizer, in particular to a method for preparing liquid fertilizer suitable for green leafy vegetables by using microorganisms. Background technique [0002] With the continuous development of social life, people's demand for various crops continues to increase, resulting in the use of chemical fertilizers in agricultural production to achieve a significant increase in production and income. It is impossible for all types and forms of chemical fertilizers to be absorbed and utilized by plants. The utilization rate of nitrogen fertilizer is 30-60%, the utilization rate of phosphorus fertilizer is 2-25%, and the utilization rate of potassium fertilizer is 30-60%. Therefore, long-term application of chemical fertilizers will not only waste a lot of resources, but also cause various diseases. Environmental problems, such as damage to soil structure, soil compaction, salinization, water eutrophication, water pollution, e...

AI Technical Summary

Problems solved by technology

However, the fermentation of biological pesticides produces more nutrient-rich wastewater, and direct discharge will cause damage to the water environment. Therefore, the nutrient-rich fermentation water must be recycled and used effectively.

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a liquid fertilizer suitable for green leafy vegetables by using microorganisms and a preparation method thereof, aiming at the problem that pesticide residues in green leafy vegetables, especially the above-ground parts as edible parts, are easy to exceed the standard and For food safety and environmental problems caused by long-term excessive use of chemical fertilizers, while ensuring that fertilizers can provide sufficient and various nutrients, add some natural active ingredients with insecticidal and sterilizing functions, which is convenient for farmers to operate, reduces labor costs, and The use of chemical fertilizers and pesticides is reduced, the safety of green leafy vegetables can be improved, and the nutrient-rich fermentation liquid can be effectively used to achieve environmental protection

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