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(接上期)2.番茄灰霉病番茄灰霉病是番茄上危害较重且常见的病害,各菜区都发生。低温、连续阴雨天气多的年份危害严重。发病严重时造成茎叶枯死和大量的烂花、烂果,直接影响产量。发病原因:引起番茄灰霉病的病原是半知菌亚门真菌灰葡萄孢(图1),病菌以菌核形式在土壤里,或以菌丝体及分生孢子形式在病株残体里越冬。病株上产生的分生孢子借助气流、灌溉水或雨水传播,可通过番茄伤口、花粉和茎基部、花瓣等处侵入。除危害番茄外,还可危害害茄子、辣椒、黄瓜、瓠瓜等20多种作物。
(Continued) 2. Botrytis cinerea Botrytis cinerea tomato is more serious and common diseases, all vegetable areas have occurred. Low temperature, continuous heavy rainy years of serious harm. Serious disease caused stems and leaves withered and a large number of burnt-out, rotten fruit, a direct impact on production. The cause of the disease: Botrytis cinerea caused by Botrytis cinerea Botrytis cinerea (Figure 1), the bacteria in the form of sclerotia in the soil or in the form of mycelium and conidia in the diseased plant residue Winter. The conidia produced on the diseased plants are spread by means of airstream, irrigation water or rainwater and invaded by tomato wounds, pollen and stem bases, petals and the like. In addition to endangering tomatoes, but also endanger the eggplant, pepper, cucumber, cucumber and other 20 kinds of crops.