Multifunctional ecological acid soil amendment

Abstract

The invention discloses a multifunctional ecological acid soil amendment. The multifunctional ecological acid soil amendment is prepared from the following raw materials in parts by weight: 25-79.9 parts of silkworm dropping, 10-40 parts of tobacco stem, 0.1-1 part of sodium alginate, and 10-34 parts of bovine-derived powder. The soil amendment has the efficacy of increasing soil pH value, reducing toxicity of heavy metal on crops, increasing soil organic matter content, freeing soil, improving soil fertility, avoiding underground pest and threadworm, reducing pesticide consumption on the soil, improving soil ecological environment, and the like, and has a wide application prospect.

Description

Technical field [0001] The invention belongs to the technical field of agricultural soil fertilizers, and specifically relates to a multifunctional ecological acid soil conditioner. Background technique [0002] In southern my country, there are various red or yellow acidic soils widely distributed in the same season with high temperature and rain, humid and hot. The soil pH is generally 4.5-6, which is acidic. Especially in recent years, the extensive use of compound fertilizers and industrial emissions have caused acid rain, which has increased the acidity of the soil in the south. Acidic soil has the following main hazards to the production of crops: 1. Low soil pH and high activity of heavy metals can easily cause aluminum, iron and manganese toxicity to crops and affect the normal growth of crops. 2. The nutrient phosphorus in acidic soil is easily fixed by aluminum and iron with high activity, so that the phosphorus in the soil is converted into fixed phosphorus, which mak...

AI Technical Summary

Problems solved by technology

Acidic soil has the following main hazards to the production of crops: 1. The pH value of the soil is low, and the activity of heavy metals is high, which is likely to cause aluminum, iron and manganese poisoning of crops and affect the normal growth of crops

2. The nutrient phosphorus in acidic soil is easily fixed by highly active aluminum and iron, so that the phosphorus in the soil is converted into fixed phosphorus, which makes it impossible for crops to absorb

3. The soil is acidic and has weak adsorption capacity for cations, resulting in K + , Ca 2+ , Mg 2+ Mineral nutrients such as ions are easily leached, resulting in a lack of mineral nutrients potassium, calcium, and magnesium in acidic soils

[0003] On the other hand, due to the long-term non-returning of straw in my country's agricultural production activities, the lack of land use measures for planting green manure, and the gradual replacement of large livestock such as cattle with agricultural machinery, the amount of manure used in farmyards has decreased, and the content of soil organic matter is low. The degree of impoverishment is severe

Moreover, the use of chemical fertilizers and pesticides has increased year by year, which has brought great harm to the ecological environment.

Long-term use of chemical fertilizers and pesticides will not only change the structure of soil aggregates and increase the degree of soil compaction, but also reduce the content of soil organic matter, inhibit the activities of beneficial microorganisms in the soil, and eventually lead to weakened soil fertility and the inability to grow crops

At the same time, due to the lack of organic matter in the soil, underground pests and nematodes are more and more harmful to crops, biting the roots of crops, causing farmers to use a large number of highly toxic pesticides to kill underground pests and nematodes, seriously affecting the ecological environment of the soil. increased soil pollution

[0004] Because the above-mentioned problems exist in acidic soil, which seriously affects the growth of crops, it is urgent to develop a multifunctional ecological acidic soil conditioner to improve acidic soil

[0005] At present, some existing patented technologies are applied to the improvement of acidic soils. For example, Chinese patent document CN200610035807.4 discloses a method for producing multi-component acidic soil conditioners by utilizing alkali slag and urban sludge. It is difficult to control the content of heavy metals and toxic organic substances in the preparation of raw materials such as industrial waste, and the soil conditioner made is likely to cause secondary soil pollution

Chinese patent document CN200710029172.1 discloses a preparation method of an acidic soil conditioner for dry land in southern China, which uses calcined shell products, calcium magnesium silicate and magnesium ammonium phosphate as raw materials to improve crops in acidic soil and supplement calcium in the soil , magnesium, silicon and other elements, but it does not have the effect of increasing soil organic matter content, improving soil compaction, and repelling underground pests and nematodes

Chinese patent document 201110154187.7 discloses an organic environment-friendly soil conditioner for improving acidified or acidic soil, which is prepared from biogas residue, calcium magnesium phosphate fertilizer, shell powder and plant ash to increase soil pH and organic matter content, increase soil calcium, Magnesium, phosphorus, potassium and other nutrients, but it does not have the effect of loosening and improving soil compaction and repelling underground pests and nematodes

[0006] At present, there are no soil conditioner products that use raw materials such as silkworm excrement, sodium alginate, tobacco stems, and bovine bone meal, which can not only improve acidic soil, but also increase soil organic matter, supplement soil trace elements, and repel underground pests and nematodes.

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