枯萎病是黄瓜生产上的一种毁灭性病害，一般全生育期均可发病，特别是在棚（室）栽培的黄瓜危害更重，一般发病率为１０％～３０％，严重的高达８０％～９０％，从而严重影响黄瓜的生产发展。为减少防治成本和对环境的污染，一般以采用无公害防治技术较好。具体做法是：一、选 Fusarium wilt is a devastating disease in the production of cucumbers. Generally, the disease can develop during the whole growth period. In particular, the cucumbers cultivated in the greenhouse (room) are more harmful. The general incidence is 10% -30% and the severity is as high as 80% ~ 90%, thus seriously affecting the cucumber production and development. In order to reduce the cost of prevention and control and pollution of the environment, it is generally preferable to adopt pollution prevention and control technologies. The specific approach is: First, the election