大棚菜的“二害”即肥分危害 ,高温危害。对大棚菜产量、产值影响很大 ,防治措施如下 :一、肥分危害的防治１．深施肥料。化肥宜深施或溶解在水中施。２．适量施肥。大棚内流失少 ,施肥量原则上低于露地蔬菜。３．施熟有机肥。施用有机肥 ,特别是人畜粪尿或栏肥要充分腐熟发酵 Greenhouse vegetables, “two pests” that fat endangering, high temperature damage. On the greenhouse vegetable production, a great impact on output value, prevention and control measures are as follows: First, the prevention and treatment of fertilizer hazards 1. Deep fertilizer. Fertilizer should be deep or dissolved in water facilities. 2. Appropriate amount of fertilizer. Shed less shed, the amount of fertilizer in principle below the open field vegetables. 3. Shi cooked organic fertilizer. Application of organic fertilizer, especially human and animal feces or column fat to full maturity fermentation