In this paper, the virulence of three entomogenous fungi strains (B-99, Pfu02, Nr-98-1), Bt and Chlorpyrifos EC to Rhizopertha dominica and Cryptolestes minutus living in wheat were tested. The result shows as follows: The Bt-1 WP has strong virulence to this two pest species. LD50 to R.dominica is 15.75ug/g, which of C. minutus is 8.06ug/g. The highest mortality is only 55% when the two pest species were treated with three entomogenous fungi strains in three days later; the result indicates that the virulence of three fungi strains to the two pest species are poor. The suffocating effects of 48% Chlorpyrifos to the two pest species are good, the death rates of R.dominica and C. minutus reached 100.0 percent at the density of 0.80ml/L.
Li Shiguang, Yang Li, Lin Huafeng, Zhang Lei ,Shen Zonghai, Xu Faqian
. Study on Socially Harmless Controlling Technologies on Stored Grain Insect Pests[J]. Chinese Agricultural Science Bulletin, 2005
, 21(5)
: 133
-133
.
DOI: 10.11924/j.issn.1000-6850.0505133
1白旭光.储藏物害虫与防治[M].北京:科学出版社,2002.271~273
2沈宗海.粮油储藏[M].北京:中国财政经济出版社,1998.185~196
3王佩祥.储粮化学药剂应用[M].北京:中国商业出版社,1997.8~25.
4邓望喜.储藏物害虫的生物防治技术[J].粮食储藏,1994,23(2~3):80~90
5张宏宇,喻子牛.苏云金芽孢杆菌防治仓储害虫[J].中国生物防治,1995,11(4):178~182
6李世广,林华峰,徐庆丰.几种虫生真菌对烟青虫的致病性研究[J].安徽农业大学学报,2001,28(4):376~379
7李世广,林华峰.不同条件下几种虫生真菌对棉铃虫的侵染致病效应[J].华东昆虫学报,2003,12(1):29~34
8李世广,林华峰,刘志红,等.几种植物性物质防治储粮害虫的研究[J].粮食储藏,2005,(1):8~10
9Urban A, Schmidt H. Moth. Pests controlled biologically[J]. Plant Protection News,2001,31:8~9
10 张国梁.甲基毒死蜱防治储粮害虫的研究[J].粮食储藏,2004(1): 3~5
