The harm of excessive application of nitrogen, phosphorus and potassium fertilizers

The production of crops is inseparable from fertilizers, and nitrogen, phosphorus and potassium fertilizer is a commonly used fertilizer, which can promote the growth and development of crops and increase the yield. However, fertilization should also be controlled by a certain degree. If these three kinds of common fertilizers are used too much, it will also cause harm to crops. Let's take a look at the harm of excessive application of nitrogen, phosphorus and potassium fertilizers with the editor.

1. The harm of excessive application of nitrogen fertilizer

Excessive application of nitrogen fertilizer will cause normal growth, make crops green and mature late, prolong the growth period, make plants soft and easy to lodge, and also produce toxic nitrite, resulting in crop poisoning and death. It is very easy to cause mechanical damage and scab of wheat and brown spot of rice. The application of a large amount of nitrogen fertilizer will also make cotton buds and bolls sparse and easy to fall off, reduce sugar yield of sugar beet, reduce yield of fiber crops, reduce yield and quality and so on.

2. Excessive application of phosphate fertilizer is harmful.

Excessive application of phosphate fertilizer will lead to exuberant respiration of crops, and the consumption of a large amount of nutrients is far greater than the absorption and accumulation of plants, resulting in early development of reproductive organs of crops, premature maturity of crops, smaller grains and low yield. seriously affecting economic benefits. Moreover, for gramineous crops, it will also lead to the fixation of silicon in the soil, which can not be absorbed by plants, resulting in symptoms such as slender stems, lodging and poor disease resistance.

3. Excessive application of potash fertilizer is harmful.

Excessive application of potash fertilizer will reduce the absorption of magnesium and calcium by crops, hinder the growth of crops, and lead to the occurrence of many diseases such as rot heart disease of leafy vegetables and bitter pox disease of apples. In addition, it will also cause harmful metals and harmful bacteria in some areas to exceed the standard, destroy the nutritional structure and balance in the soil, and reduce yield. When conditions permit, it is best to choose organic fertilizer. The application of organic fertilizer can improve soil properties, improve soil fertility, improve the yield and quality of agricultural products, and curb environmental pollution.

The above is an introduction to the harm of excessive use of nitrogen, phosphorus and potassium fertilizers. I hope it can help you. If you want to know more about it, please pay attention to us.