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Soil compaction. The soil structure can coordinate soil moisture and air, stabilize soil moisture, regulate soil heat, enhance soil stress resistance, and provide a good growth environment for plants. The organic matter of soil is an important part of soil structure and an important indicator of soil fertility. However, due to the high number of multiple crops, the excessive application of chemical fertilizers and insufficient application of organic fertilizers have caused serious loss of soil organic matter, destroying soil structure, and reducing soil water retention, fertilizer retention and permeability, which is the most conducive to soil compaction. Important reasons have seriously affected crop yields and farmers' economic benefits.
Soil pollution. Due to the use of chemical fertilizers, the use of pesticides is blind, and the content of toxic and harmful substances in the soil gradually accumulates, causing pollution of plants, degrading the quality of agricultural products, and endangering people's health. The types of soil pollution mainly include heavy metal pollution and organic pollution. Fertilizers and pesticides contain a certain amount of heavy metals. In some areas, sewage is used for irrigation, and a large amount of heavy metals are also introduced into the soil. Heavy metals have poor mobility in the soil, and the residence time is long. Most microorganisms cannot degrade in time, thus causing excessive accumulation of heavy metals in the soil, which greatly exceeds the self-purification ability of the soil, thereby causing environmental pollution.
Excessive use of chemical fertilizers and pesticides has caused “poisoning†of land, and crop yields have dropped sharply. The destruction of soil ecological balance is largely a "crack" of chemical fertilizers and pesticides. The soil itself has insufficient nutrients, and in order to obtain high yields, fertilizer must be applied. Since the late 1980s, chemical fertilizers have rapidly spread in Hainan Island due to their high nutrient content and quick effect, and the application rate has doubled. At the same time, pesticides are also used in large quantities. Hainan has high temperature and humidity, prone to germs, and serious pests and diseases. The main means of plant protection is the use of pesticides. "It can be said that the losses caused by pests and diseases have been greatly reduced at the beginning, but the problems are gradually exposed.
• . Bio-organic fertilizer can reduce carbon and nitrogen, the carbon-nitrogen ratio is too large, the decomposition rate of microorganisms is slow, and the effective carbon and nitrogen elements in the soil are consumed. At the same time, it can inhibit plant pathogenic bacteria, improve the microbial environment and physical structure in the soil, improve the plant's own immunity, improve crop quality and storage and transportation. It has the following characteristics:
1. Microbial fertilizers can promote crop growth.
2. Microbial fertilizer can improve soil and fertilize soil.
3. The role of microbial fertilizers improves the stress resistance of crops.
4. Microbial fertilizer can promote root growth and increase nutrient absorption.
5. Microbial fertilizer can improve product quality.
6, microbial fertilizer promotes early maturity.
7, disease resistance and pest control.
8. The effect of microbial fertilizers on increasing production and increasing income is significant.
In addition, moderate tillage is required. Deep tillage can effectively improve soil pore tightness, improve soil water storage and aeration, promote microbial activities, and accelerate the weathering of soil mineral nutrients and decomposition of organic matter. The use of large tractors for deep tillage and land preparation, deep depth of more than 30 cm, intensive cultivation, multi-plough, multi-pluton, multi-pluton, breaking the plate layer and plow bottom layer, improving soil pore structure, play the role of water retention, warming, and fattening.
How to improve the problem of planting soil with microbial fertilizer
Nowadays, the problem of land diseases is seriously serious, crops are reduced and the crops are reduced, which makes the farmers' friends worry. The main problems of soil diseases are the following two problems: soil compaction and soil pollution. How is the main cause of this problem formed?
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