贵州惠水褐飞虱灯诱种群发生规律分析

Occurrence regularity of light-traps collections of Nilaparvata lugens( Stl) in Huishui County,Guizhou Province

为明确褐飞虱灯下种群发生规律,对贵州省惠水县1984～2013年30年间褐飞虱灯光诱集数据进行分析。结果显示,褐飞虱在惠水县的始见日主要出现在4月下旬至5月中旬,始盛日集中出现在5月下旬至7月上旬,末见日为9月中下旬;惠水县褐飞虱为害表现为双峰型,且第二次峰为害较为严重,30年间1994～2003年是褐飞虱灯下种群沉寂时期,1984～1993年和2004～2013年为灯诱种群猖獗时期;始见日和始盛日到高峰日时间间隔存在显著相关性（r=0.736＊＊）。

In order to investigate the occurrence regularity of brown rice planthopper（ BPH） , Nilaparvata lu-gens （St？l） populations, the light traps data of BPH of 30 years（from 1984 to 2013） were analyzed in Huishui county,Guizhou province. The results showed that its first appearance mainly occurred from late A-pril to mid-May, the initial outbreak was intensively occur in late May to early July and the last appearance date was in middle and late September in Huishui. The damage of BPH in Huishui was suggested as bimodal pattern and the damage of the second peak was more serious. The middle decade （from 1994 to 2003） of the 30 years was a low-population period and the early （ from 1984 to 1993 ） and late （ from 2004 to 2013 ） dec-ade were the outburst periods of its amount under light. Both the first appearance date and initial outbreak date showed significantly correlated（r=0. 736）to the occurrence peak date.