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穗颈瘟是本地水稻穗期的主要病害,每年均有发生,对产量损失极大。近年来,随着耕作制度的改革和施肥水平的提高,尤其是氮肥施用量的增大,加重了病害的发生。在水稻抽穗期,遇低温多阴雨天气,更易加重为害。病重田块严重减产,甚至失收。水稻穗颈瘟在目前还缺乏准确的测报手段下,虽然采取了推广种植抗病良种和加强肥水管理,对控制病害发生和危害起了一定作用,但有效防治大面积病害发生和危害的措施,主要还是选准药剂,在水稻破口初期及时搞好喷药防治。为此,本站于1993年在中稻破口初期.应用了江苏省农科院最新研制的稻病灵系列农药,进行了防治水稻穗颈瘟试验示范,现将结果报告如下。
Panicle blast is a major disease of the local rice heading stage, occur each year, a great loss of yield. In recent years, with the reform of farming system and the improvement of fertilization level, especially the increase of nitrogen fertilizer, aggravating the occurrence of diseases. In the heading stage of rice, the case of cloudy and rainy weather, more vulnerable to aggravate. Seriously reduce the weight of field operations, or even lost. Rice panicle blast is still lack of accurate means of measuring the current, although taken to promote the cultivation of disease-resistant varieties and strengthen fertilizer and water management, control of disease occurrence and harm played a role, but effective prevention and treatment of large-scale disease hazards and measures, The main choice of pesticide or pesticide, in the early rice breakage do a good job in spraying prevention and treatment. To this end, this site in 1993 at the beginning of the break in. Inapplication of the Jiangsu Provincial Academy of Agricultural Sciences developed the latest Dagang Ling series of pesticides, prevention and control of rice panicle blast demonstration, the results are reported as follows.