山楂叶螨在苹果不同品种上的生长发育及繁殖研究

Development and reproduction of hawthorn spider mite on different apple cultivars

室内实验结果表明,山楂叶螨在苹果不同品种上的生长发育和繁殖有较大的差异。其中在红星上存活率高,发育速度快,生殖力强,而在秦冠上存活率低,发育速度慢,生殖力弱。对山楂叶螨种群年龄结构的分析表明,卵在种群中所占比例较高,而成虫所占比例甚低,建议在对其进行防治时选用杀卵力强的药剂。

The experiments of the development and reproduction of hawthorn spider mite ( Tetrancychus vienensis Zacher) on some apple cultivars were conducted in laboratory. The results showed that the mite on Hongxing cultivar reproducs rapidly with high livability,whereas the mite on Qinguan cultiver reproduceds slowly with low livability. The population age structure of the mite on all of the cultivars were also analyzed, it showed that eggs account for large proportion of the population and the adult mite only account for a few proportion, so we suggest that the insecticide which can kill eggs effectively should be chosen in control of the mite.