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分析总结了在浙江省嘉善县不同耕作制度下稻纵卷叶螟发生为害特点,发现耕作制度的改变不仅影响稻纵卷叶螟繁殖率和种群数量的消长,而且各代为害对水稻产量的影响也随着改变。当前直播单季晚稻模式十分有利于稻纵卷叶螟发生和为害,大发生频率高,且为害期长,稻纵卷叶螟为害状明显,农民非常重视防治,用药量大,防治次数多,容易造成盲目和过度用药。总结并提出了在不同耕作制度下对稻纵卷叶螟的防控对策。
The paper analyzes and summarizes the damage characteristics of Cnaphalocrocis medinalis under different tillage systems in Jiashan County, Zhejiang Province. It is found that the change of tillage system not only affects the reproduction and population growth of Cnaphalocrocis medinalis, but also affects the yield of rice Also change with it. The current direct seeding single season late rice mode is very conducive to the occurrence and damage of the rice leaf roller, the occurrence of large frequency and long damage period, the rice leaf roller damage is obvious, farmers attach great importance to prevention and control, dosage, prevention and treatment frequency, Easily lead to blind and excessive medication. Summed up and put forward in different tillage system of rice leaf roller control measures.