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采用普通白炽灯诱法对贵州省江口县迁飞性害虫褐飞虱进行诱集,并根据历史数据分析该地区水稻褐飞虱灯下发生期及灯诱数量。结果显示,褐飞虱各年的始见日多出现在4月下旬至5月上旬,始盛日多出现在6月中旬至7月中旬,该虫年发生动态为双峰型,早稻高峰期多在7月下旬至8月下旬,晚稻高峰期多在9月至10月;近年来,褐飞虱始盛日和高峰期都有提前的趋势;高峰期日最高诱获量、候平均诱获量、旬平均诱获量及全年累计诱获量之间存在明显相关性,相关系数为早稻0.9579～0.9861,晚稻0.8675～0.9772;根据25年的资料,前15年(1977—1992年,其中缺1988年资料)全年最高峰主要出现在晚稻期间,出现在早稻期间的仅有5年,后10年(1993—2007年,其中缺2000—2004年资料)全年最高峰则全部出现在早稻期间;以高峰期候平均诱获量为指标,在25年中,大发生、中偏重发生、中等发生的各有5年,中偏轻发生的有2年,轻发生的有8年,这与当地田间的发生为害情况基本一致。
The common incandescent lamp method was used to induce the brown planthopper migrating pests in Jiangkou County, Guizhou Province. According to the historical data, the occurrence period of the brown planthopper (Nilaparvata lugens) and the number of light induced plants were analyzed. The results showed that most of the first day of BPH appeared in late April to early May, and most of the initial BPH appeared in mid-June to mid-July. From late July to late August, the peak of late rice peaked from September to October. In the recent years, both the beginning and the peak of brown planthopper had an early trend; the peak seizure peak, average daily seizure, There was a significant correlation between the amount of seizures and the total amount of seizures throughout the year. The correlation coefficients were 0.9579 ~ 0.9861 for early rice and 0.8675 ~ 0.9772 for late rice. Based on the data of 25 years and the data of the previous 15 years (1977-1992, ) The peak of the year mainly occurred in late rice period, only appeared in the early rice period of only 5 years, the last 10 years (1993-2007, of which 2000-2004 lack of information) the peak year all appeared in the early rice period; with The average number of seizures during the peak period is taken as an indicator. In 25 years, large occurrences and medium occurrences occur, with moderate occurrences of 5 years, moderate births of 2 years, and mild occurrences of 8 years. This is in line with the local field The occurrence of harm basically the same situation.