Organic environmentally-friendly soil conditioner for improving acidified or acid soil

Abstract

The invention relates to an organic environmentally-friendly soil conditioner for improving acidified or acid soil and a preparation method thereof. The soil conditioner is prepared from the following raw materials in parts by weight: 23-46 parts of biogas residue, 14-24 parts of shell powder, 16-25 parts of calcium magnesium phosphate fertilizer, 13-20 parts of plant ash, 0.1-0.2 part of chitosan, 5-7 parts of zeolite powder and 6-9 parts of bentonite. The soil conditioner is prepared through pretreatment of the biogas residue, pretreatment of the shell powder and the like; through the produced soil conditioner, the pH value of soil can be increased; nutritive elements such as calcium, magnesium, phosphorus, potassium and the like in the soil are increased; the organic matter content in the soil is increased; the water retention and fertilizer retention capacity of the soil is improved; the physicochemical property of the soil is improved; the antiretroviral (diseases, pests, drought and the like) capacity of crops is improved; heavy metal poison is reduced; and the soil conditioner is convenient to apply, is not influenced by wind power and is suitable for mechanical working.

Description

technical field

[0001] The invention relates to an organic environment-friendly soil conditioner for improving acidified or acidic soil and a preparation method thereof, belonging to the technical fields of solid waste recycling and agricultural production. Background technique

[0002] Due to the influence of soil parent material, planting mode, fertilization, climate and other factors, there are currently about 200 million hectares of acidic soil in China. Most acidic soils have a pH of less than 5.5, and some are even lower. The total soil area of ​​Shandong Province is 12.11 million hectares, and the area of ​​acid brown soil is 1.7062 million hectares. Especially in Shandong Jiaodong area, the pH value of some orchard soils even reaches 4.5, which seriously affects the growth of fruit trees. In protected vegetable production, due to years of continuous cropping and excessive application of chemical fertilizers, soil acidification has become increasingly serious, which ...

Images