糖醋酒液对梨小食心虫和苹果小卷叶蛾的诱杀作用

糖醋酒液可以诱杀多种害虫,是一种传统无公害防治措施。但在植保上应用的糖醋酒液配方中的糖、醋、酒成分及配比却比较混乱,难于重复和推广应用。试验研究诱杀果树主要害虫梨小食心虫Grapholitha molesta(Busck)和苹果小卷叶蛾Adoxophyes orana Fisecher von Rslerstamm的糖醋酒液最佳配比。结果表明,糖醋酒液配比中乙酸∶乙醇∶水为3∶1∶3∶80是较理想配方,调节不同成分比例对诱虫效果会造成不良影响。试验结果还表明,梨小食心虫雌虫比例会随着糖醋酒液诱虫量的增加而减少。诱虫量小于10头/d时雌虫的比例为88.0%,诱虫量大于30头/d时雌虫比例只有56.1%。

Trapping effect of the mixture of sugar-acetic acid-ethanol to Oriental fruit moth ( Grapholitha molesta) and smaller apple leaf roller (Adoxophyes orana)

The mixture of sugar-acetic acid-ethanol (MSAE), which may trap and kill many kinds of pest, is a traditional no-pollution method of pest control. However, the formulas of MSAE in use are indistinct, and hard to be repeated and extended. In this study field experiments were conducted to evaluate the effect of series mixtures of MSAE for trapping Oriental fruit moth Grapholitha molesta (Busck) and smaller apple leaf roller Adoxophyes orana ( Fisecher von R(o)slerstamm) . The results showed that the MSAE ( sugar: acetic acid: ethanol: water was 3 :1:3 :80) could trap more pests than the other formulas. It also showed that the higher amount of adult Oriental fruit moths trapped per day the smaller proportion of female adults was. When the total amount trapped was less than 10 moths per day, the proportion of females was 88.0% , whereas only 56.1 % when the amount was more than 30.