树干注射技术防治芳香木蠹蛾的试验研究——药液的不同浓度防治不同树龄的试验

为有效防治芳香木蠹蛾,采用树干注射不同浓度40%氧化乐果乳油稀释液的方法,以不同树龄的稠李为实验对象,对芳香木蠹蛾1~3龄幼虫进行防治试验。经相互比较实验结果而知,在一定范围内(以对植株不产生伤害为基准),对于近似周径的稠李而言,浓度越大,防治效果越好;而同一浓度,相同的注射量,对于不同树龄而言,则周径越小,防治效果越好。

Experimental Study on Controlling Cossus cossus Orientalis Gaede by Using Trunk Injection Skills:Different Dosages for Different Ages of Trees

In order to control Cossus cossus orientalis Gaede effectively,this article taked Pruns padus L.of different ages as experimental objects and employed the method of injecting 40% emulsified oil of oxide rogor(which has been diluted to different densities),did some experiments on controlling Cossus cossus orientalis Gaede.By comparison,the authors reached a conclusion as followings:in proper ranges(taking doing no harm to the plants as base level),to similar perimeters,the bigger the density is,the better the effect is;while the density and injection dosage are both the same,to plants of different ages,the smaller the perimeter is,the better the effect is.