一品红花卉上烟粉虱的序贯抽样技术研究  

Studies on the sequential sampling technique of Bemisia tabaci(Gennadius) on Euphoubia pulcherrima Willd

作　　者：王立红[1] 

机构地区：[1]浙江大学农业与生物技术学院

出　　处：《植物保护》2007年第4期74-76,共3页Plant Protection

基　　金：宁波市科技局科研项目(NB2005C10011)

摘　　要：烟粉虱[Bemisiatabaci(Gennadius)]在花卉一品红上的为害十分猖獗,在调查分析的基础上,研究了烟粉虱在一品红上的序贯抽样技术。结果表明:烟粉虱成虫的平均拥挤度*m与平均密度x-回归方程为*m=-9.05+2.26x-,相关性极显著(0.799 1);以Iwao的序贯抽样为基础,结合Kuno的序贯抽样,提出复序贯抽样技术,防治指标上下限为T′0(n)=7n+2 5.39n,T″0(n)=7n-2 5.39n,截止线为T(n)=α+1D02-β-n1,D0=0.15。The results showed that the regression equation of mean crowding （m） and mean density （x） of Bemisia tabaci was m=- 9.05 ＋2. 26x, with a very high correlation coefficient. On the basis of the Iwao＇s sequential sampling technique and combined with the Kuno＇ s sequential sampling technique, the complex sequential sampling was put forward. The upper limit, lower limit and close string were To（n）=7n＋2√5.39n,T″（n）=7n-2√5.39n and T（n）= T（n）=a＋1/D0^2-β-1/n,D0=-8.05/D0^2-1.26/n）（t=2,D0=0.15）for the target pest, respectively. The largest number of specimen was 18.

关 键 词：烟粉虱 一品红 序贯抽样技术 

分 类 号：S431.192[农业科学—农业昆虫与害虫防治]