摘要
研究结果表明：麦岩螨种群密度与其寿命、繁殖、迁逃等关系密切，随着种群密度的增加，麦岩螨卵的孵化率降低，初孵幼螨死亡率增加，雌成螨繁殖力下降，寿命缩短，扩散迁逃率增加，其危害密度为每株小麦２０～４０头及其以下。防治指标为：返青期百茎螨量１４００头，危害指数为１％；拔节期百茎螨量６７００头，危害指数为６．５％。
A study on the effects of different population density of stone mite of Petrobia latens (Muller) on its longevity,propagation and migration.The results indicated that with the increase of population the density of Petrobia latens the hatchability of egg decreased propagative capability and longevity of female mite declined the death rate of larva and the migratory proportion of adult mite raised. The harmful density was 20—40 mites per wheat plant .The control standard was 1400 mites per 100 wheat stems turning green period and index of damage was 1.0% during turning green period and that is 6.5% respectively at that is 6700 at jointing stage.
出处
《华北农学报》
CSCD
北大核心
1997年第1期102-107,共6页
Acta Agriculturae Boreali-Sinica
关键词
小麦
麦岩螨
种群密度
防治指标
危害指数
Stone mite
Density dependent effect of population
Control standard
Index of damage
