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水稻白叶枯病由稻苗带菌传病,已为众所周知。秧田期施药可以推迟大田发病,减少病害初期的发病程度,亦已为若干试验所证实。唯因秧苗期间很少出现症状,使秧田施药的推广受到相当的阻碍。为了确诊秧苗是否带有白叶枯病菌?1978——1980年在滇西、滇中的水稻叶枯病常发地区,用浓缩针刺接种法进行诊断,获得初步成效。应用于指导施药,也得到相应的结果。现分别报导如下。一、浓缩针刺接种法当秧苗为3—4叶期时,在需诊断的秧田四周,随机取100株秧苗。洗净后剪去根
Rice bacterial blight is carried by rice seedlings and is well known. Seedling field application can delay the onset of disease in the field and reduce the incidence of disease in the early stages, which has also been confirmed by several tests. Due to seldom symptoms during seedling, the popularization of seedling application is considerably hindered. In order to confirm whether the seedlings are infected with bacterial leaf blight? 1978 - 1980 in western Yunnan, Yunnan, the most common areas of rice leaf blight, the use of concentrated acupuncture inoculation diagnosis, obtain initial results. Applied to guide the application, also get the corresponding results. Now separately reported as follows. A concentrated acupuncture inoculation method When the seedlings for the 3-4 leaf stage, in the need to diagnose the seedlings around, randomly picked 100 seedlings. Wash and cut off the root