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晚稻穗颈瘟,年年有发生。危害轻的“花白”减产,危害重的“全白”失收。如何减轻或避免穗颈稻瘟的危害,在防治时应注意以下3点。 1.有些地方片面强调防治穗颈瘟要省工省药省成本,而只把孕穗期有叶瘟的田块列入防治穗颈瘟的对象田,这是防治穗颈瘟卜的一个误区。笔者多年实地调查发现,在孕穗期不见叶瘟的田却出人意料地发生了穗颈瘟,损失严重。因此,凡是栽种易感稻瘟病品种(或组合)的田,以及老病区、偏施氮肥田,如遇
Late rice panicle blast, occur year after year. Harm light “flower white” cut production, endanger heavy “all white” lose. How to reduce or avoid the harm of panicle blast, in the prevention and treatment should pay attention to the following three points. 1. In some places, one-sided emphasis on the prevention and treatment of panicle neck blast province to save provincial drug costs, and only the booting stage leaf plague included in the field of control of panicle blast, which is a misunderstanding of panicle blast Bu. The author for many years field survey found that in the booting stage, no see Ye-pian of the crop was unexpectedly occurred panicle blast, loss of serious. Therefore, those who planted susceptible varieties of rice blast (or combination) of the fields, as well as the old ward, biased nitrogen fertilizer field, in case