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当前位置: 首页 > 文章 > 我国水稻纹枯病防治策略的探讨 江苏农业学报 1992 (2) 36-39
Position: Home > Articles > On the Control Strategy of Rice Sheath Blight Caused by Thanatephorus cucumeris in China Jiangsu Journal of Agricultural Sciences 1992 (2) 36-39

我国水稻纹枯病防治策略的探讨

作  者：
过崇俭;陈志谊
单  位：
江苏省农业科学院植物保护研究所
关键词：
水稻纹枯病;品种;防治
摘  要：
从7个水稻品种纹枯病的严重度(病情指数)与产量损失之间的关系中,找出病斑扩展到稻株倒4叶时(病指40以内)的中抗品种,一般可以不用药剂防治;但病斑扩展至倒3叶(病指超过40)时,减产明显,需用药剂控制.且应掌握在病斑达到倒4叶(病指40)时用药.
译  名：
On the Control Strategy of Rice Sheath Blight Caused by Thanatephorus cucumeris in China
作  者：
Guo Chongjian and Chen Zhiyi Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nangjin 210014
关键词：
Rice sheath blight ; Cultivar; Disease control
摘  要：
By analysing the relationship between disease severity (disease index Dl) and yield loss caused by rice sheath blight on single shoots of 7 cultivars and the effect of controling sheath blight on 4 moder-ately resistant cultivars in field at different locations, it was found that lesions on the 4th leaf from top (DI<40) did not significantly reduce the yield of moderately resistant cultivars. But as the lesions de-veloped up to the 3rd leaf from top, the yield was markedly reduced and chemical control was neces-sary. In the case of susceptible cultivars, chemical control should be applied when lesions appeared on the 4th leaf from top (DI<40). This was the best time for sheath blight control.

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