摘要
在稻水象甲成虫怀卵期 ,田间用绿僵菌 (10 1 4 孢子 / hm2 )喷雾防治 ,13天后对成虫的防治效果达 92 .5 %。经防治后的幼虫和次代成虫平均虫口分别为 2 .12和 0 .30头 /丛 ,而对照分别为 8.40和 4.17头 /丛 ,差异均达极显著 (t>0 .0 1)。对虫口密度高发地块 ,若采取菌剂和化学农药配合使用 。
Using Metarhizium anisopliae to control rice water weevil, Lissorhoptrus oryzophilus at pre oviposition stage was conducted in the field Result showed that the adult population of L oryzophilus was reduced by 92 5% 13 d after spraying at a rate of 10 14 spores/ha Larva and adult populations in the coming generation were decreased to 2 12 and 0 30 per hill, while those in the check the populations were 8 40 and 4 17 per hill respectively
出处
《中国生物防治》
CSCD
2000年第2期52-55,共4页
Chinese Journal of Biological Control
基金
国家九五科技攻关项目! ( 96 - 0 0 5- 0 1- 0 9- 0 1)
温州市科委资助项目
关键词
绿僵菌
稻水象甲
田间试验
生物防治
Metarhizium anisopliae
Lissorhoptrus oryzophilus
biological control
