The soil salinization in greenhouses is mainly secondary salinization. Because vegetable production requires water and large amounts of fertilizer, especially cucumber, tomatoes, eggplants, zucchini, and other eggplant vegetables, it is often necessary to pour 1 or 2 times before pouring it. Water, often watered to make up for fat. Due to poor water quality or over-application of nitrogen fertilizers, there will be excess nitrogen and excessive soluble salts in the soil, which will increase the degree of salinization. Can choose to use drip irrigation, micro-irrigation, sub-film small furrow irrigation and other technologies, and increase the application of organic fertilizer such as chicken manure to reduce the amount of fertilizer. At the end of the application of chemical fertilizers, diammonium, urea, ammonium nitrate, superphosphate, etc. that have less effect on the concentration of soil solution are used, and ammonium chloride, potassium chloride, etc. with strong salt strength are not used. Drip fertilization, foliar fertilization and root ditch fertilization were adopted to reduce the amount of water and fertilizer, increase the utilization of water and fertilizer, and reduce the accumulation of salt in the soil. In addition, biogas residues and biogas slurry can also be applied to increase boron, molybdenum, manganese, zinc, and other micronutrients; rotations can be carried out for rotation and mutual enrichment of nutrients can be absorbed; and biological demineralization can be promoted to plant corn in summer during the open season. Legumes and other crops absorb excess available nitrogen in the soil, and then greenish it in time to decompose through the green body to breed a large number of microorganisms to consume excess available nitrogen in the soil, thereby reducing the concentration of salt ions in the soil; earlier removal of the film, increase Precipitation on the soil leaching; For soil compaction, a serious degree of salinization of the greenhouse, the surface soil can be taken with sand or fine cinder particles, can also be replaced with high-quality fertile pastoral soil, surface replacement soil depth of 10 to 15 cm. Can also take irrigation water to dissolve salt, so that the water layer to maintain more than 5 cm, soak 3 to 5 days, and then rule out a large number of dissolved salt water. Painlessly Silicone-Faced Dressing,Silicone-Faced Dressing,Comfortable Silicone-Faced Dressing,Flexible Silicone-Faced Dressing Zhende Medical Co.,Ltd , https://www.zhendemedicals.com