土壤是生物存在的重要环境因素，是可重复利用的农业资源。土壤一旦遭到破坏或污染很难得到恢复。温室中土壤肥力高，生产能力强，更需认真加以保护。温室生产多为间、套、混种栽培形式，复种指数高，而休闲时间较短。为获取温室生产的高效益，人们投入大量化肥，使温室土... Soil is an important environmental factor for the existence of organisms and is a reusable agricultural resource. Once the soil is damaged or contaminated, it is hard to recover. Greenhouse soil fertility, strong production capacity, but also need to be seriously protected. Greenhouse production is mostly intercropping, intercropping and mixed cultivation, with high multiple cropping index and short leisure time. In order to obtain the high efficiency of greenhouse production, people invest a large amount of fertilizers to make the greenhouse soil ...