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应用芜菁夜蛾线虫 Steinernema feltiae agriotes 防治桃小食心虫 Carposina niponcnsisWalsiagham 的研究表明,线虫寄生桃小的温湿度范围:温度20—35℃、土壤含水量7%—15%,以温度25—30℃、含水量10%左右致死速度最快。此特性与桃小越冬幼虫出土所需求的条件相一致,肯定了应用线虫防治桃小在出土期为宜,线虫的施用量为每 m~260—80万头,持续效果较长。经过多点试验和示范表明,地面施线虫与施农药效果相当或稍优于农药。几年来已在数省果区防治了200余 ha,取得明显的效果。
The application of Steinernema feltiae agriotes to control Carposina niponcnsisWalsiagham showed that the small temperature and humidity range of parasitic peach nematode ranged from 20 ℃ to 35 ℃ and the soil moisture content was from 7% to 15% Water content of about 10% lethal fastest. This characteristic is consistent with the conditions required for the peach overwintering larvae excavated, affirming the application of nematode peach prevention and control in the unearthed period is appropriate, the application of nematodes per m ~ 260-80 million head, lasting effect longer. After more tests and demonstration shows that the ground nematodes and pesticides application is equivalent to or slightly better than pesticides. Over the past few years in several provinces have been preventing more than 200 ha, achieved significant results.