保护地由于其环境密闭,物质流动速度缓慢,土壤理化性质与露地有很大差别,因此在施肥时必须加以注意。 1.保护地大量施用有机肥能较好地改善土壤结构,提高土壤供肥、供水、供气性能,防止发生盐害,促进蔬菜产量和品质的提高。但用有机肥作基肥时,一定要将有机肥彻底腐熟,以免未腐熟的有机肥施入保护地后继续分解产生的各种有 Protected areas due to its confined environment, the slow flow of material, physical and chemical properties of the soil are very different from the open field, it must be noted in the fertilization. 1. Large-scale application of organic fertilizer in protected areas can better improve the soil structure, improve soil fertility, water supply, gas supply performance, prevent salt damage, and promote vegetable yield and quality improvement. However, when using organic fertilizer as a basal fertilizer, it must be thoroughly decomposed with organic fertilizer to prevent the decomposition of un-matured organic fertilizer into the protected area