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近年来春季十字花科蔬菜上菜蝽发生加重,应注意及时查治。菜蝽主要以成虫和若虫刺吸蔬菜的嫩芽、嫩茎、嫩叶和花蕾,在受害部位留下黄白色或微黑色斑点。在叶片上危害,多集中在叶背刺吸取食,导致叶片枯黄或死亡。幼苗子叶期受害可致萎蔫甚至枯死,花期受害不能结角或籽粒不饱满。据观察,菜蝽一年发生2~3代,5月上旬进入发生始盛期,5月中旬至9月下旬是主要危害期,10月下旬以成虫在枯枝落叶下、土缝中或枯草中越冬。雌虫产卵于叶背,初孵若虫群集,随着龄期
In recent years, cruciferous vegetables appetite occurred aggravating, should pay attention to timely investigation. Stink bug Mainly insects, nymphs, young leaves and buds of adult vegetables and nymphs sucking vegetables, leave yellow-white or slightly black spots on the affected parts. Hazard on the leaves, and more concentrated on the back of the leaves sucking the food, resulting in the leaves yellow or dead. Cotyledon seedling damage can cause wilting or even dead, flower victims can not knot or grain is not full. It is observed that the occurrence of Stinkbug infestation occurs 2-3 generations a year in the first ten days of May and begins in the early May. The period from mid May to late September is the main hazard period. In late October, adult beetles are under litter, In the winter. Female spawning in the leaves back, newly hatched nymphs cluster, with the age