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水稻纹枯病是一种典型的高产病害,目前它在我国各种作物病害的危害性中,已跃居第一位,随着单位面积产量的增加,它的危害将会越严重,在纹枯病的防治上,我国植病工作者已在药剂和抗菌素等方面作了可贵的贡献,但由于缺少抗病品种,尚不能满足生产要求,为此从生物防治方面进行探索。这项工作是从1980年起,分别在湖南、湘阳、祁东、株州、长沙、郴州,北京红星、西郊、东北旺等农场,及河北隆化等地进行。试验中所用的益菌是从各地的稻田土、菌核上分离获得,计有:木霉菌(Trichodermasp.)、芽孢杆菌(Bacillus sp.)、和梭状芽孢杆菌(Clostridium sp.),同时也用了美国引进木霉菌(T.harzianum)。
Rhizoctonia solani is a typical high-yielding disease. At present, it has risen to the top among the hazards of various crop diseases in our country. With the increase of yield per unit area, the damage will be more serious. In the prevention and control of the blight, the plant disease workers in our country have made valuable contributions in the fields of medicaments and antibiotics. However, due to the lack of disease-resistant varieties, they can not meet the production requirements. Therefore, we should explore the biological control. This work was carried out in 1980 in Hunan, Xiangyang, Qidong, Zhuzhou, Changsha, Chenzhou, Beijing Red Star, the western suburbs, northeast Wang and other farms, and Longhua, Hebei Province. The probiotics used in the experiment were isolated from the soil and sclerotia of rice fields in various places, including Trichoderma spp., Bacillus sp., And Clostridium sp., Used the United States to introduce T.harzianum.