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果树砧木幼苗期,主要的地下害虫是蝼蛄。由于蝼蛄为害,常造成缺苗断垄。采用毒杀等措施,收效不明显。几年来,我们采用灌根法,效果十分显著。具体做法是:用3000倍的1605或1000倍的马拉硫磷等触杀剂,顺苗木行浇洒,使药液渗到苗木根部。1小时后,中毒的蝼蛄开始爬出,4小时后大量爬出于地面死亡。灌一次根,全年基本上无蝼蛄为害。这种方法,经济简便,是果树苗圃防治蝼蛄的好方法。
Fruit tree rootstock seedling stage, the main underground pests are slugs. As 蛄 蛄 damage, often resulting in lack of seedlings broken ridge. The use of poison and other measures, the effect is not obvious. Over the past few years, we use irrigation root method, the effect is very significant. The specific approach is: with 3000 times the 1605 or 1000 times of malathion and other contact agents, irrigation along the row of seedlings, so that liquid infiltration seedling roots. 1 hour later, the poisonous catfish began to crawl out of the ground and climbed out of the ground in large numbers after 4 hours. Irrigation once a year, basically unprofitable. This method, simple and economical, is a good way to prevent and control chrysanthemums in fruit tree nurseries.