Soil conditioner for improving nutrient leaching loss resistance of soil

Abstract

The invention discloses a soil conditioner for improving nutrient leaching loss resistance of soil. The soil conditioner is made from the following raw materials, by weight part, 6-8 of humulus lupulus, 1.2-1.4 of urea phosphate, 15-18 of shell powder, 3-4 of lentinan, 7-9 of Chinese cabbage residue, 5-6 of ammonium chloride, 63-65 of polluted pig dung and urine, 13-15 of a black liquor from papermaking, 3.5-3.7 of a nitric acid solution with the concentration being 10%, 12-13 of a thick alum liquid and a proper amount of water. The soil conditioner adopts raw materials with high superficial areas matching thoroughly-decomposed organic matters. The density of the soil aggregate is increased, the permeability of the soil is reduced, and the cation exchange capacity is improved. Through the coated structure of the conditioner, the release of nutrient elements is reduced, thereby reducing the nutrient concentration in an area. Further, the conditioner has an absorbing and maintaining effect for fixing nutrient components in a shallow soil layer, thereby further improving the nutrient leaching loss resistance of the soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil improver for improving nutrient leaching resistance in soil. Background technique [0002] Soil improvement is aimed at the poor texture and structure of the soil, and corresponding measures are taken to improve soil properties and soil fertility. Soil improvement and restoration agent is an important application of soil improvement. However, the soil remediation and improvement agents currently on the market have many defects: one is that the raw materials used contain artificially synthesized polymer compounds, which are not easy to decompose in the soil and remain for a long time, which has potential safety hazards; Soils, such as acidic and alkaline soils, have no effective targets for heavy metal pollution and nutrient deficiencies, resulting in low efficiency of improvement and restoration, or even counterproductive effects; third, the long cycle and high co...

AI Technical Summary

Problems solved by technology

However, the soil remediation and improvement agents currently on the market have many defects: one is that the raw materials used contain artificially synthesized polymer compounds, which are not easy to decompose in the soil and remain for a long time, which has potential safety hazards; Soils, such as acidic and alkaline soils, have no effective targets for heavy metal pollution and lack of nutrients, resulting in low efficiency of improvement and restoration, or even counterproductive effects; third, the cycle of soil improvement is long and the cost is high, so it cannot be applied on a large scale

[0003] Fertilizer nutrient leaching refers to the loss caused by the fertilizer nutrient elements applied to the soil moving down vertically with the water below the active layer of the plant root system. It not only wastes fertilizer resources, reduces the efficiency of fertilization, but also causes serious environmental problems such as groundwater pollution. question

[0004] As a renewable biological resource with a wide range of sources and low cost, pig manure has great potential as a raw material for soil improvement and restoration because it is rich in organic matter and nutrients such as nitrogen, phosphorus, and potassium. The feed contains a large amount of additives during the process, resulting in excessive heavy metals and indirectly polluting the excrement