Antibacterial continuous-cropping-resistant compound fertilizer for vegetables and preparation method thereof

Abstract

The invention discloses an antibacterial continuous-cropping-resistant compound fertilizer for vegetables. Raw materials of the compound fertilizer comprise, by weight, 10-20 parts of urea, 10-15 parts of potassium dihydrogen phosphate, 15-20 parts of calcium magnesium phosphate fertilizer, 8-12 parts of potassium nitrate, 2-4 parts of sodium sulfate, 2-4 parts of attapulgite, 0.5-0.7 part of amino acid, 8-12 parts of cassava slag, 15-20 parts of Chinese herb residue, 8-10 parts of silkworm excrement, 20-25 parts of wheat straw, 2-4 parts of chitosan, 3-4 parts of EM bacteria powder and 6-8 parts of polyvinyl alcohol. The invention also discloses a preparation method of the above antibacterial continuous-cropping-resistant compound fertilizer for vegetables. The fertilizer has rich nutrients, meets requirements of continuous-cropping vegetables, and helps improve soil and adjust pH of soil. With the cooperation of Chinese herb residue, the fertilizer inhibits and kills insect disease and promotes healthy growth of vegetables, can maintain soil fertility, avoids insufficient nutrients of continuous-cropping vegetables, and can help reduce use of pesticides and minimize environment pollution.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a compound fertilizer for anti-stubble and antibacterial vegetables and a preparation method thereof. Background technique [0002] As people pay more attention to healthy diet, the demand for vegetables is also increasing. The high output of facility vegetables and the characteristics of regardless of season output meet people's demand for vegetables. However, due to the relatively single variety of protected vegetables, the difficulty of replanting, and the high multiple cropping index, the problem of repeated cropping of protected vegetables has occurred. [0003] The main reasons for the repeated cropping of protected vegetables are as follows: 1. Long-term planting of a single species selectively absorbs some preferred nutrients, resulting in an imbalance of soil nutrient supply; 2. The continuous planting of similar crops provides an adaptive environment for pathogenic ...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of relatively single species of protected vegetables, difficulty in falling stubble, and high multiple cropping index, there has been a problem of repeated cropping of protected vegetables

[0003] The main reasons for the repeated cropping of facility vegetables are as follows: 1. Long-term planting of a single species selectively absorbs some preferred nutrients, resulting in an imbalance of soil nutrient supply; 2. The continuous planting of similar crops provides an adaptive environment for pathogenic bacteria and insect eggs and hosts, the aggravation of pests and diseases; 3. Changes in soil fertilizer supply capacity and physical and chemical properties caused by frequent tillage and partial application of chemical fertilizers

[0004] The existing facility vegetable fertilizers mainly solve the problem of repeated cropping by supplementing nutrients, and there are few studies on pest control and soil improvement. Therefore, it is necessary to provide a new fertilizer to solve the problem of repeated cropping