麦茎谷蛾生物学特性及防治

Bionomics and Control of Ochsencheimeria taurella Den. et Schiff

麦茎谷蛾在山西南部麦区普遍发生，丘陵旱塬地区为害较重。大发生时，孕穗～灌浆期小麦被害穗率达３０％以上。药剂防治试验表明，３月上旬卵态幼虫孵化时用４０％甲基异柳磷、２０％菊马乳油等进行一次性防治，均有较好的效果。

Ochsencheimeria taurella Den. et Schiff. is a pest that occurs frequently in the wheat fields in southern Shanxi. The damage was relatively serious in the hilly regions and became a limiting factor on wheat production in some parts. In serious cases, the rate of injured spikes reached up to 30% in the growing period (booting-grouting).One spraying with 40% Isofenpos-methyl and 20% Jumaruyou in early March when the larval ova were hatching gave effective control.