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经过果园多年的性诱剂诱捕器监测和越冬调查,摸清了苹小卷叶蛾是以2龄和3龄幼虫在果树老翘皮、剪锯口、芽鳞片内以及粘贴在枝条上的枯叶内等部位越冬,并且以2龄幼虫居多。测量得出2龄和3龄幼虫的头壳宽度分别是0.37 mm±0.02 mm和0.45 mm±0.04 mm;明确了苹小卷叶蛾在河北省保定地区每年发生3代。各代羽化持续时间长。越冬代羽化期在5月中旬至6月下旬,第1代羽化期在6月中旬至8月上旬,第2代羽化期在8月上旬至10月上旬。单植苹果园和混栽果园苹小卷叶蛾发生动态无明显差别。根据调查确定,4月中旬苹果花芽露红期即越冬幼虫的出蛰期为防治苹小卷叶蛾的关键期。
After many years of orchard lure trap monitoring and overwintering investigation, find out the apple small leaf roller moths are 2 and 3 instar larvae in the old tree bark, cut the kerf, bud scales and stuck in the branches of the dead leaves Other parts of the winter, and most of the 2nd instar larvae. The results showed that the shell widths of 2nd and 3rd instar larvae were 0.37 mm ± 0.02 mm and 0.45 mm ± 0.04 mm, respectively. Feather generations have a long duration. Overwintering generation of eclosion period from mid-May to late June, the first generation of emergence in mid-June to early August, the second generation of eclosion in early August to early October. There was no significant difference in the dynamics of monocotyledonous apple orchards and mixed orchards. According to the survey confirmed that mid-April apple bud bud red-wintering larvae of the out-of-season for the prevention and control of the small leaf roller moth critical period.