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蔬菜保护地土壤盐渍化有逐年加重的趋势,据有关资料介绍,多数使用3年以上的蔬菜保护地土壤盐分含量均大于露地土壤。大棚土壤的含盐量在0.10％～0.38％,日光温室的土壤在0.15％～0.50％之间,已超过了适宜蔬菜生长的浓度范围。同时还使土壤的结构受到破坏,在盐分含量较严重的土壤表面可以看到较坚硬的盐化层,通气和透水能力降低,已严重影响作物的正常生长,如不及时加以改良,土壤的恶化现象将更加严重。
Soil salinization in vegetable reserves has been increasing year by year. According to relevant information, most of the soil salt content in vegetable preserves that use more than three years is greater than that of open soil. The greenhouse soil salt content of 0.10% to 0.38%, sunlight greenhouse soil 0.15% to 0.50%, has exceeded the suitable range of vegetable growth. At the same time, the structure of the soil is also destroyed. A harder salinization layer can be seen on the surface of soil with more serious salt content, and the ventilation and water permeation reducing ability have seriously affected the normal growth of the crop. If not improved in time, the soil is deteriorated The phenomenon will be more serious.