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

Abstract

The invention discloses a soil-improving continuous-cropping-resistant compound fertilizer for vegetables. Raw materials of the compound fertilizer comprise, by weight, 10-15 parts of urea, 10-12 parts of ammonium nitrate, 15-20 parts of potassium phosphate, 10-15 parts of calcium magnesium phosphate fertilizer, 3-5 parts of potassium sulfate, 1-3 parts of calcium chloride, 2-4 parts of carbonized rice husk, 3-5 parts of peat, 1-3 parts of attapulgite, 5-8 parts of guano, 15-20 parts of Chinese medicine residue, 10-15 parts of soybean meal, 10-20 parts of plant ash, 3-5 parts of EM bacterial powder and 8-10 parts of polyvinyl alcohol. The invention also discloses a preparation method of the above soil-improving continuous-cropping-resistant compound fertilizer for vegetables. The compound fertilizer has rich nutrients. through cooperation of organic fertilizer, carbonized rice husk, peat, attapulgite, EM bacterial powder and polyvinyl alcohol, the product helps improve soil, adjust soil pH and maintain soil fertility from three aspects of water retention, air permeability and fertilizer efficiency maintenance. With the cooperation of the Chinese medicine residue, the product helps inhibit and kill insect disease, promote healthy growth of vegetables and avoid continuous-cropping and insufficient nutrition of vegetables.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a compound fertilizer for improving soil resistance to repeated cropping of 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 environm...

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