在塑料大棚和玻璃温室蔬菜栽培(包括育苗)中,由于施肥用量较大,加之环境相对封闭,浇水量较小,很容易造成棚室内盐分积累,这种盐分加大了土壤溶液浓度,致使作物根系渗透压加大,水分外流,影响作物对水分和养分的吸收。对蔬菜作物造成危害,使生长受到抑制。比如植株矮化,生长迟缓,根尖焦黄,吸收困难,叶片明显变小,叶色浓绿,叶片皱缩不开展,植株不 In the plastic greenhouse and glass greenhouse vegetable cultivation (including nursery), due to the larger amount of fertilizer, coupled with the environment is relatively closed, the smaller the amount of water, it is easy to cause greenhouse indoor salt accumulation, the salt increased soil solution concentration, resulting in Crop root osmotic pressure increases, water outflow, affecting the crop’s absorption of moisture and nutrients. Harms vegetable crops and inhibits growth. Such as dwarf plants, growth retardation, apical yellow, absorption difficulties, significantly smaller leaves, dark green leaves, leaf shrinkage is not carried out, the plant does not