Harm of soil acidification to agriculture
Date:2020/09/25
1. Root system does not grow.
Each crop has its own suitable range of soil acidity and alkalinity, and most crops are suitable from slightly acidic to slightly alkaline. The strong acidity in soil is the main cause of tree senescence. Soil acidification affects the growth of crops, to a certain extent, there is no duration. Soil acidification is also not conducive to the growth of banana, leading to banana leaves drying ahead of time, not conducive to the preservation of banana leaves.
2. The leaching of nutrient segregants in acid soil is one of the important reasons for the decline of soil fertility.
After the soil is acidified, the effectiveness of the fertilizer is affected. After the application of phosphorus, there is still a lack of phosphorus, and after the application of potassium, there is still a lack of potassium. PH value 6-8, soil available nitrogen content. When the pH value is less than 6.5, the phosphorus in the soil is converted into iron and aluminum phosphate and solidified. When the pH value is less than 6.0, the soil available potassium, calcium, and magnesium content drops sharply. Soil acidification not only affects the availability of macronutrients, but also affects the availability of trace elements. Boron is in the range of pH 4.7≤6.7, and Mo is in the range of pH 4≤8. As the pH value decreases, the effectiveness decreases. Fertilizer made by roller granulator can replenish the lost fertility of the soil.
3. Soil acidification will affect the life activities of soil microorganisms.
After the soil is acidified, the number of beneficial microorganisms in the soil decreases, and the growth and activity of beneficial microorganisms are hindered, which affects the decomposition of soil organic matter and the cycle of C, N, P, and S. However, it is beneficial for some harmful microorganism groups that like to move in acid soil to survive, which leads to the growth of bacteria, the increase of rhizosphere diseases and the difficulty of control. The organic fertilizer machine can alleviate the harm caused by acid soil. Organic fertilizer itself has the function of restoring soil activity and fertilizing the soil.
4. Soil acidification promotes the release and activation of toxic elements and increases cadmium pollution.
After the soil is acidified, the aluminum ions in the soil are poisoned, causing the root system of crops to die. In such a soil, the crops that grow will inevitably decrease in yield.