Consequence analysis and treatment methods of soil compaction
The phenomenon of soil compaction has become more and more common in the cultivation of agricultural land nowadays. Apart from the causes of drought, there is an unreasonable application that leads to the destruction of the land structure. China uses 9% of the world's arable land and 6% of its water resources to feed 21% of the world's population. It has amazing achievements and it mainly contributes to our land. Of course, more people always think of it as fertilizer. Because the amount of chemical fertilizers we use to feed the world's 1/5 population is now close to one-third of the global total. With the constant application of fertilizers, our output has not increased much. On the contrary, there has been consolidation in the soil, and production has become even less.
What is soil consolidation?
Refers to the lack of organic matter in the surface layer of the soil, poor structure, in the irrigation or rainfall and other external factors due to structural damage, soil material dispersion, and after drying by the cohesion force to make the soil surface hard.
Second, the phenomenon of soil compaction
As the saying goes, “One crop of flowers depends on fertilizers,†but nowadays, in many parts of China, crops are almost entirely dependent on “fertilizerâ€. Many people often look at their own land to worry about the past, the village of human wheat, the average an acre to use compound fertilizer 100 jins, top dressing plus urea 30 jins, this fertilization has lasted two or three decades. However, over the years, more and more chemical fertilizers were used by the villagers, but the output was no longer uplifted. At the same time, however, hazards began to appear and the land began to build. Compaction will make the soil less able to retain water and nutrients, affect crop root growth, and reduce crop yields. In addition, excessive fertilization can also cause soil acidification.
Third, the cause of soil consolidation
1. Soil compaction caused by the decline of organic matter: Soil aggregate structure is an important indicator of soil fertility. The content of organic matter is an important indicator of soil fertility and aggregate structure. The reduction of organic matter results in soil compaction. The decomposition of soil organic matter is achieved by the activity of microorganisms. With long-term single application of chemical fertilizers, humus can not be replenished in a timely manner, not only will cause soil compaction, but also may crack.
2. Fertilizer causes soil compaction: The reason is that only the cation or anion in the chemical fertilizer is an element that the plant needs. The plant unilaterally chooses to absorb useful ions, resulting in soil acidification or salinization. Destruction of the soil pellet structure results in reduced soil water retention, fertilizer retention, and permeability, resulting in soil compaction.
Excessive application of nitrogen fertilizer: 1 increase in nitrogen supply of microorganisms and corresponding increase in carbon consumption of 25 parts. The carbon consumed is derived from organic matter in the soil and has a low content of organic matter, which affects the activity of microorganisms and thus affects the formation of soil aggregates. Causes soil compaction.
Excessive application of phosphate fertilizer: The cations in the soil are dominated by divalent calcium and magnesium ions. When phosphate fertilizer is applied to the soil in excess, phosphate ions combine with calcium, magnesium and other cations in the soil to form insoluble phosphates, which is a waste of phosphate fertilizer. It also destroyed the soil aggregate structure, resulting in soil compaction.
Excessive application of potash: Potassium has a particularly strong substitution of potassium ions and can displace polyvalent cations that form a soil aggregate structure, while monovalent potassium ions do not have a bridge effect, and the bond bridges of the soil aggregate structure are destroyed. It destroys the structure of the granules, resulting in soil compaction.
Fourth, the consequences of soil consolidation
Soil consolidation leads to anoxic land, decreased root activity, and weakened cell respiration in roots, resulting in insufficient energy supply and affecting the absorption of nutrients. Soil compaction can also lead to deficiency of the disease. The deficiency of the disease is not necessarily the lack of such elements in the soil, but is caused by a decrease in the absorption capacity of the root caused by a series of problems such as soil compaction, inappropriate pH, or unbalanced supply of soil moisture. As a result, crop production was reduced, and production was severely eliminated.
Fifth, governance methods
1. Apply organic fertilizer to increase soil organic matter. The biggest benefit of organic fertilizer is fertility. Farmers who resumed the use of organic fertilizers found that the soil was clearly fresh and the vegetables were particularly good. In addition, organic fertilizers can be fermented by the use of a biofertilizer fertilizer, which can be purchased from farms. This not only solves farm pollution, but also can ferment fertilizers. The cost is low, fermentation is quick, simple, and thoroughly cooked.
2, balanced fertilization, reasonable fertilization. Fertilizer can not be blindly excessive, nitrogen, phosphorus, potassium, trace elements, organic fertilizer, microbial fertilizer combined application, not a single application.
3, the application of microbial fertilizer. Microbial fertilizer is applied to the soil. Microbial secretions can dissolve the phosphate in the soil and release the phosphorus. At the same time, potassium and trace element cations are released to restore the structure of the granules in the form of bond bridges, eliminating soil compaction. In addition, through the application of microbial fertilizer, the beneficial microorganisms in the soil are increased. By utilizing the metabolism of organic matter microorganisms, the soil aggregate structure is improved and the purpose of improving soil compaction is achieved. It is recommended to use the golden treasure microbial strain, and the use effect is good. The company is established for a long time and is large. Brand.
For more detailed information, please pay attention to Beijing Huaxia Kangyuan official website, or call our hotline, electricity.
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