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春季为害小麦的地下害虫主要有蝼蛄、蛴螬、金针虫三种,多发生在小麦返青后至灌浆期。据观察,蝼蛄为害,将麦苗嫩茎咬成乱麻状,断口不整齐;蛴螬为害,将麦苗根茎处咬断,断口整齐;金针虫则钻食麦茎嫩心,被害部呈乱麻状,但外皮仍连在一起。仔细观察麦苗的这些被害状,不用挖土调查,就可以确定麦田发生的是哪种地下害虫,既简便,又准确,很值得在群众中推广。其防治方法是:1、撒毒土每亩用5%辛硫磷颗粒剂2公斤,或3%辛硫磷颗粒剂3-4公斤,或2%甲基异柳磷粉剂2公斤,兑细土30-40公斤,拌匀后开沟施入,或顺垄撒施后接着划锄覆土,可有效地防治蛴螬和金针虫。
Spring pests of wheat are mainly underground pests, catfish, pinworm three, occurred in wheat after turning green to filling stage. It is observed that catfish damage, the young seedlings bark maize into a mess, fracture irregularly; 蛴 螬 damage, the seedling rhizome biting off, neat fracture; golden worm is drilling sweet corn stalks, the Ministry was a mess, but the skin Still linked together. Careful observation of these seedlings of wheat seedlings, without digging investigation, you can determine what kind of underground pests occurred in wheat fields, both simple and accurate, it is worth to promote among the masses. The prevention and treatment methods are as follows: 1, 2 kg of 5% phoxim granules or 3 kg of 3% phoxim granules or 2 kg of 2% Soil 30-40 kg, mix well after the ditching facilities, or Shun ridge spread and then planted hoe covered soil, which can effectively control emu and groundworms.