大棚内的土壤,随着栽培年限的增加,土壤盐渍化日趋严重,从而影响大棚蔬菜的产量和品质。 一、大棚内土壤盐渍化的原因 1.大棚内的土壤,因不受降雨条件的影响,土壤中的盐分不能随雨水流失或淋溶到土壤深层中去,而残留在土壤耕层内。 2.大棚栽培,由于灌水次数频繁,使土壤的团粒结构遭到破坏,形成板结层,大孔隙减少,通透性变差,盐分不能渗透到土壤深 Soil in the greenhouse, with the increase of planting years, soil salinization is becoming more serious, thus affecting the yield and quality of greenhouse vegetables. First, the causes of soil salinization in the greenhouse 1. Soil in the greenhouse, because of the impact of rainfall conditions, the soil salt can not drain or leaching into the soil with rainfall, and remain in the soil layer. 2. Greenhouse cultivation, due to frequent irrigation, the aggregate structure of the soil was destroyed, the formation of the cotyledon layer, the reduction of macropores, poor permeability, the salt can not penetrate into the soil depth