温室韭菜疫病的防治韭菜疫病发病初期，叶尖出现一些针尖大小的黄圆点，最后病斑连成片，叶片全部枯黄死亡。农业防治：温室韭菜要做到通风透光，相对湿度应控制在８５％以下，以抑制病害发展。要小水勤浇，配合使用氮、磷，钾。及时拣净病枯叶，减少病菌来源。药剂防治：... Leek disease prevention and treatment of greenhouse disease early chives disease, the tip of the tip of some yellow dot size point, and finally into the film even the lesion, all the yellow leaves died. Agricultural control: greenhouse leeks to be ventilated and light, relative humidity should be controlled at 85% or less, in order to inhibit the disease development. To a small water pouring, with the use of nitrogen, phosphorus and potassium. Timely pick net dead leaves, reduce sources of germs. Pharmacy control: ...