Since midsummer, moderate to heavy rain continued in Hubei Province, precipitation concentrated, and leaching was strong. Caustic, magnesium, potassium, and other alkaline salts were largely lost. Experts cautioned that effective measures must be taken to prevent soil acidification. Especially in mountain areas, we must pay attention to it. Soil acidification, the root cause of the occurrence of large and concentrated rainfall, misuse of fertilizers and improper treatment of factory sewage are also one of the reasons for acidification. The harm is the same as the damage of soil erosion, which continuously affects, harms, erodes the growth and development of green plants and living environment. 1. Inhibit root development: soil acidification can aggravate soil compaction, make it difficult to extend the root system, weak rooting ability, and difficulty in slow seedling growth. It is easy to form old and small trees, old and stiff seedlings, and the roots are stunted, and the absorption function is reduced, the growth is weak, and the yield is reduced. . Soil acidification aggravates the waste of pesticides: In the acidified soil, the plant growth is weakened, the disease resistance is reduced, and it is easy to be infected by the disease and the application amount has to be increased. 2. Ineffective fertilization: The absorption and utilization of most of the trace elements is very low. Soil acidification leads to serious loss of fertilizers and fertilizer utilization is less than 30%. The acidity of the soil not only causes the loss of 70% of nitrogen, but also makes 60~80% of the phosphorus and potassium components that are prone to insoluble matter not be absorbed. In addition, acidity results in weak root growth and low nutrient absorption and utilization, which results in heavy use. Fertilizers, crops grow slowly, have many diseases, produce low yields, and are of poor quality, resulting in increased input and significant reductions in benefits. 3, the crop is malnourished, and the deficiency of the disease is serious. Such as apple bitter disease, red spots, nodules, clumps, mosaics, fruit rust and pear iron head, spots, chicken paw India and other diseases and viruses and other diseases occur frequently. The tree vigor has weak resilience and is easily eroded by pathogenic bacteria. It can't control the occurrence of diseases with even the best medicine. Due to soil acidification, the microecological environment of the soil is changed, and harmful microorganisms in the rhizosphere multiply under acidic conditions, and these diseases are controlled. Difficulty, such as the occurrence of Fusarium wilt of cucumber is likely to occur. In particular, cruciferous clubroot disease and eggplant vegetables, bacterial wilt, Verticillium wilt and pepper three fall (fall, drop, deciduous) increased. Aluminum, manganese, and iron ions can be poisoned, causing crops to produce black roots, rust roots; root rot of celery, cabbage, tomato bacterial wilt, and lettuce appearing "gold trim." 4. Soil beneficial microbial population changes, individual growth of bacteria becomes smaller, growth and reproduction rate is reduced, such as Bacillus, main actinomycetes group that decomposes organic matter and protein, the number of actinomycetes, M. methane, and related fungi is reduced, affecting nutrient elements. A virtuous circle has caused a reduction in agricultural production. In particular, acid rain can reduce the amount of ammonifying bacteria and nitrogen-fixing bacteria in the soil, resulting in a decrease in the ability of soil microorganisms to aminate and nitrify and adversely affect crops. (Hubei Soil Fertilizer Station) Acid-base neutralization is the theoretical basis for the treatment of acidified soils. The following five kinds of countermeasures can “adjust acidâ€. Measure one: Due to the demand of soil-based crops to measure soil fertilization, reduce the application of chemical fertilizers, can effectively prevent soil acidification. Instead of using urea, ammonium bicarbonate is used instead of urea. When applying phosphate fertilizer, use calcium magnesium phosphate instead of calcium superphosphate. All can reduce soil acidification. Step two: use lime, a second acid supplement calcium. The cheapest base is lime. The specific measures are: after the autumn harvest, the straw weeds in the ground should be cleaned up, 250 to 300 kilograms of lime should be sprinkled, or one month before spring sowing, after artificial or mechanical ridging, Lime 100~150 kg. After the application, plowing should be done and the whole plant must be ploughed. After the next two raining sessions, the seeds can be sown. Slightly more expensive point of management measures is the use of soil conditioner - calcium magnesium mineral fertilizer, with 50 ~ 75 kg of fertilizer per acre base application, watering after application, fully guarantee the public opinion. Measure three: The use of straw in the fields and weeds in the corner of the field to produce fire excrement is also an effective measure to control soil acidification. Fire excrement is alkaline and contains more potassium, which regulates the pH and potassium of the soil. Tujia farmers rely on fire excrement to maintain the acid-base balance and potassium balance of the soil. Act 4: Increase organic fertilizer and balance soil pH. Through the application of pig barley fertilizer in the soil acidified plots of Xishiping and Fuyang in Enshi, it was found that the root system of the maize was coiled around the pig manure and did not drill in the soil, indicating that the plant prefers organic fertilizer rather than acidified soil. . Act 5: Covering crops with mulch or grass can reduce the erosion of precipitation on the soil and reduce the leaching of alkaline salts in the soil. It is an effective measure to prevent soil acidification. Frozen Squid,Frozen Shredded Squid,Fresh Frozen Squid,Frozen Peru Squid Roll ZHEJIANG RETRONX FOODSTUFF INDUSTRY CO.,LTD , https://www.retronxfoods.com