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蝼蛄是直翅目蝼蛄科害虫。山西各地主要分布的是华北蝼蛄(Gryllotalpa unipinaSaussur)和非洲蝼蛄(G.africama Paligot et Beauvois)。这两种蝼蛄食性较杂,除为害粮食作物外,在我局各苗圃普遍为害苗根部,造成1—2年生落叶松、油松苗木大量死亡,严重的达50％以上,给育苗工作造成很大威胁;为了解决这个问题,我们在总结分析过去防治效果差的基础上,今年进一步观察了蝼蛄的生活习性及为害规律,并在5—6月份采用5—10％的敌敌畏药液灌洞熏杀,杀虫率达99％以上。现将情况介绍如下。一、蝼蛄窝洞特征蝼蛄是地下害虫。据我们观察不论冬季,夏、秋季都有较固定的窝洞,并在土层中成“S”形垂直或倾斜向下;所不同的只是越冬窝洞深达100厘米左右,夏、秋窝洞(即
蝼 蛄 is an Orthoptera Hymenoptera insects. The main distribution in Shanxi is the Gryllotalpa unipina Saussur and the G.africama Paligot et Beauvois. In addition to the harmful effects of food crops, all the nurseries in our bureau are generally damaged seedlings root, resulting in 1-2 years of larch, pine tree seedlings died in large numbers, severe up to 50%, resulting in nursery work is very In order to solve this problem, on the basis of summarizing and analyzing the poor prevention and control effects in the past, this year, we further observed the life habits of the grubs and the law of harm. In the May-June period, we used 5-10% Kill, insecticidal rate of 99% or more. Now the situation is as follows. First, 蝼 蛄 nest hole characteristics 蝼 蛄 is an underground pest. According to our observation, no matter in winter, summer or autumn, there are relatively fixed cavities and become “S” -shaped vertically or obliquely downwards in the soil layer. The difference is only that the depth of the cave is about 100 centimeters deep, Hole (ie