Preparation method for organic fertilizer for preventing and treating secondary salinization of solar greenhouse vegetable field

Abstract

The invention discloses a preparation method for organic fertilizer for preventing and treating secondary salinization of a solar greenhouse vegetable field. The preparation method comprises the following steps: (1), mixing cow dung or a mixture of the cow dung with one or more of goat manure, chicken manure, pig manure, straws and waste tobacco shreds according to the volume ratio of 1:1 and fermenting, thereby obtaining a material A; (2), preparing earthworm cast after cow dung is fermented; (3), crushing crop straws, adding the crushed straws to chicken manure or pig manure, and enzyme microorganism, mixing uniformly, building stacks and fermenting, thereby obtaining a material D; (4), mixing the materials A, C and D to obtain a material E; (5), mixing the material E, calcium cyanamide, diammonium phosphate, zinc sulfate and sodium borate, thereby obtaining finished products organic fertilizer. According to the preparation method for the organic fertilizer for preventing and treating the secondary salinization of the solar greenhouse vegetable field, wastes of agriculture and animal husbandry industries are utilized as main materials and match natural antibacterial materials, such as lime nitrogen, in accompany with secondary and trace elements, such as calcium, boron and zinc, so as to solve problems of vegetable wilting and soil harmful bacteria caused by the salinization of the solar greenhouse vegetable field. Compared with application of common fertilizer, application of the prepared organic fertilizer has the advantages that the fertilization costs are reduced and the yield and quality of vegetables are improved.

Description

technical field [0001] The invention relates to a method for preparing organic fertilizer from agricultural and animal husbandry organic waste, in particular to a method for preparing organic fertilizer for preventing secondary salinization of vegetable fields in solar greenhouses. Background technique [0002] Solar greenhouse is the main way of planting vegetables in our country. Soil continuous cropping obstacles in vegetable fields have become the bottleneck of high-quality and safe vegetable production at present. In: soil secondary salinization, nutrient imbalance, root nematodes and soil-borne harmful bacteria, etc. For a long time, the problem of blind excessive fertilization of vegetable fields in solar greenhouses has been prominent. The amount of fertilizer used is generally 5-10 times that of vegetables. The base fertilizer is mostly organic fertilizers such as poultry manure that have not been completely harmless treated, and the amount used is 75-300t / hm 2 Wit...

AI Technical Summary

Problems solved by technology

[0005] The preparation method uses agricultural and animal husbandry waste as the main material, with a certain amount of lime nitrogen and other natural sterilizing and insecticidal materials, supplemented by a certain amount of calcium, boron, zinc and other medium and micronutrient elements, and solves the problem of secondary growth of vegetable soil in solar greenhouses. Vegetable wilting caused by salinization, soil nutrient imbalance leads to physiological diseases, harmful pests and diseases affect the healthy growth of vegetables, etc.

The present invention utilizes decomposed cow manure, sheep manure, pig manure, chicken manure, crop stalks, and waste tobacco dust, and uses materials such as vermicompost, lime nitrogen, calcium nitrate, borax (or boric acid), and zinc sulfate to prepare a functional Organic fertilizers can solve the problems of vegetable root growth retardation and plant wilting caused by secondary salinization of vegetable fields, harmful bacteria and root nematodes, plant nutrition imbalance and other problems that affect vegetable growth