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1991年稻飞虱在枣阳市大发生,全市种植水稻74.61万亩,有60万亩遭受稻飞虱危害。通过防治挽回稻谷1922.52万公斤,分析发生特点是:迁入早、虫量多,范围广、上升快、短翅成虫多、卵量高,虫体发育不一,冒穿早,为害重。由于措施得力,全面控制了危害。一、大发生特点1.灯下虫量多,峰次明显。20瓦黑光灯7月13日—9月20日累计诱虫134360头。其中有白背飞虱86550头,占64.27%,褐飞虱48010头,占35.73%,日诱虫千头以上24天,高峰日8月13日灯上白背飞虱
Planthopper occurred in Zaoyang City in 1991, the city planted 746,100 mu of rice, 600,000 mu were affected by planthopper. Through the prevention and treatment of rice to restore 19,225,200 kg, the analysis of the characteristics are: move into the early, the amount of insects, a wide range of fast-rising, short-winged adults, high egg, insect body development, to wear early, harm. Due to effective measures, the overall control of the hazards. First, the characteristics of a large 1. Lamp under the amount of pests, peak apparent. 20-watt black light July 13 - September 20 cumulative 134,460 head trap. Among them, there are 86550 white-backed planthoppers, accounting for 64.27%, 48010 of brown planthopper, accounting for 35.73% of the day, thousands of insect-day over 24 days, the peak of August 13,