1．多施优质有机肥。有机肥能改良土壤结构，增加土壤有机质的含量，同时还可以为大棚蔬菜提供二氧化碳气体，促进蔬菜生长。一般每公顷施优质有机肥75～90吨，且尽量多施热性肥料如羊粪、马粪等。2．慎用易使土壤溶液浓度增高的肥料。象氯化轩、硫治钾、硫酸控等肥料施入土壤 1. Apply more high-quality organic fertilizer. Organic fertilizer can improve the soil structure, increase soil organic matter content, but also can provide carbon dioxide gas for greenhouse vegetables and promote vegetable growth. Generally, 75 ~ 90 tons of high-quality organic fertilizer per hectare is applied, and as much as possible of thermal fertilizer like sheep manure, horse manure and the like. 2. Be careful with fertilizers that increase the concentration of soil solution. Like chlorinated Xuan, sulfur governance potassium, sulfuric acid control and other fertilizers applied to the soil