During the rapid development of agriculture, people's awareness of fertilization has advanced slowly. Many farmers believe that high investment will lead to high yields and keep increasing the use of chemical fertilizers, which has caused a series of problems such as soil salinization, soil compaction and excessive heavy metal content. Today, the editor will take you to understand what impact soil salinization has on crops?
How to improve?
Soil salinization is currently quite common in China. On the soil surface, there will be frost-like substances in green, white and red, which is a distinct feature of soil salinization.
Soil salinization can lead to soil compaction, reduction of aggregate structure and deterioration of permeability, which poses obstacles to the growth of crop roots. Moreover, when the soil salt content is too high, crops will have difficulty absorbing water, which can lead to physiological drought, short growth, poor development, and in severe cases, the leaves will wilt, and even the entire plant may die. When transplanting crops, soil salinization will make it difficult to transplant seedlings and result in a low survival rate.
The formation of soil salinization is closely related to our incorrect fertilization methods. The blind and excessive use of chemical fertilizers, which crops cannot fully utilize, leads to the accumulation of inorganic salts in the soil, and soil salinization intensifies year by year.
Then how should we improve soil salinization?
1. Apply formulated fertilizers based on the needs of crops, select appropriate types and methods of fertilizers, and reduce the amount of fertilizers used. Try to avoid using large amounts of chemical fertilizers. It is recommended to use water-soluble fertilizers. The chelating salt enhancement technology of water-soluble fertilizers for reducing salt and regulating pH can not only disperse the salt index in the soil and improve it, but also activate the nutrients that have been solidified in the soil, thereby enhancing the absorption and utilization rate of nutrients.
2. Increasing the application of microbial agents can improve soil structure, enhance soil fertility, activate the soil, raise the temperature, which is conducive to promoting root growth, improving root absorption capacity, and enhancing the crop's own resistance. Moreover, microbial agents are rich in a large number of beneficial soil bacteria and can prevent the occurrence of soil-borne diseases through "inhibiting bacteria with bacteria". It is recommended to use a microbial agent containing eight types of complex salt-tolerant bacterial groups with an effective live bacterial count of ≥2 billion /g to purify the soil environment and improve the soil.