结果表明，中国梨木虱第一、第二世代种群的趋势指数分别为4．189和3．974； 世代的存活率分别为5．818％和5．52％。

The trend indices of population of 1st and 2nd generations were 4.189 and 3.974, the survival were 5.818% and 5.52%.

youdao

结果表明，中国梨木虱第一、第二世代种群的趋势指数分别为4．189和3．974； 世代的存活率分别为5．818％和5．52％。

The trend indices of population of 1st and 2nd generations were 4.189 and 3.974, the survival were 5.818% and 5.52%.

youdao