Blended facility vegetable field soil conditioner taking charcoal as matrix and preparation method thereof

Abstract

The invention relates to an agricultural waste recycling technology and a soil fertilizer technology, in particular to a blended facility vegetable field soil conditioner taking charcoal as a matrix and a preparation method thereof. The blended facility vegetable field soil conditioner comprises the following components in percentage by weight: 60 to 80 percent of charcoal, 5 to 15 percent of medical stone powder, 5 to 15 percent of zeolite powder and 5 to 15 percent of lime nitrogen. The method for preparing the soil conditioner comprises the following steps of: mixing and stirring the medical stone powder which is sieved with a 60-mesh sieve, the zeolite powder which is sieved with a 60-mesh sieve and the granular lime nitrogen uniformly, mixing the mixture with the charcoal, and stirring uniformly to prepare the soil conditioner. The method is simple and pollution-free, the volume weight of soil can be reduced, the buffer performance of the soil can be improved, the utilization rate of fertilizer nitrogen and phosphorus can be improved, and an effect of preventing and controlling soil-borne diseases is achieved.

Description

technical field [0001] The invention relates to agricultural waste recycling technology and soil fertilizer technology, in particular to a mixed-type facility vegetable field soil conditioner with biochar as a substrate and a preparation method thereof. Background technique [0002] The cultivated area of ​​protected vegetables in China is nearly 2.8 million hectares, with the following characteristics: First, high utilization intensity, high utilization frequency, high multiple cropping index, and high planting density. Facility vegetable fields are recycled, and there is basically no fallow period; second, the amount of fertilizer is large, whether it is chemical fertilizer or organic fertilizer, which far exceeds the crop demand, and excessive nitrogen fertilizer application is very common. A large amount of fertilization causes soil nitrate to accumulate, which infiltrates into groundwater through leaching, posing a potential threat to drinking water safety; the third is...

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