论文部分内容阅读
山楂叶螨是我省苹果产区的主要害虫之一，危害较重。为了寻找防治该虫的新药，我们在校园艺场进行了用哒螨灵（2一叔丁基-5（4-叙丁基苄基硫代）4-氯-3（2氢）-哒螓酮）防治山楂叶螨田间药效试验，现将试验结果总结如下。1材料与方法试验设在我校园艺场果园，地势平坦，肥力均?
Hawthorn spider mite is one of the main pests in the apple-producing area of our province, harming more. In order to find a new drug for the prevention and control of the insects, we conducted a field study using pyridaben (2-tert-butyl-5 (4-methylbutylbenzylthio) Ketone) to control hawthorn leaf mites field efficacy test, the test results are summarized below. 1 Materials and Methods The experiment is located in our school orchard garden, flat, fertile are?