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通过进─步观察研究湘北地区三代三化螟的生活习性和发生特点,提出和实施了在湘北三代三化螟严重发生情况下,开展“两查两定”,科学用药的具体措施。提出查水稻生育期定防治对象田及其方法,试验指出防治三化螟使用单剂比复配制剂效果好,认为粗水喷雾或泼浇是水稻后期施药的好方法。
Through the further observation and study of the living habits and occurrence characteristics of the three generations of yellow rice borers in the north of Hunan Province, the paper put forward and implemented the specific measures of “two checks and two determinations” and scientific medication under the serious occurrence of the three generations of rice borer in northern Hunan. Proposed to check the rice growth period targeted control field and its methods, the experiment pointed out that the use of single-dose control of Borer against the complex preparation is good, that the rough water spray or pouring is a good method of late rice.