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针对湖南省宜章县柑橘灰象甲进行发生规律调查,基本摸清柑橘灰象甲在当地一年完成1代,3月下旬开始出土活动,先为害杂草,而后爬到脐橙的幼树、苗木上食害新芽、嫩叶,白天多潜伏于土缝或阴暗的叶背等处,傍晚及清晨最为活跃,取食为害、交尾产卵。受惊扰假死落地长时间不动。可多次交尾,4~5月经常可见成对的成虫静伏枝叶上。以4~5月为害最烈,常将芽叶食光。采用鸡群啄食幼虫、人工捕杀成虫和化学农药喷灌等方法,能够有效控制柑橘灰象甲的为害。
According to the regular occurrence of Citrus australis in Yizhang County of Hunan Province, we found that Citrus aurantiacus was completed one generation a year in the local area, unearthed in late March, weed-harmed weeds and then climbed to the young tree of navel orange, Emergence of seedlings on the sprout, young leaves, more latent in the soil during the day seam or dark leaf back and other places, the evening and early morning the most active, feeding harm, copulation spawning. Disturbed by suspended animation dead time for a long time. May be multiple mating, 4 to 5 months often visible pair of adult static foliage. In April to May the most damaging, often leaves light buds. Chickens pecking larvae, artificial killing of adult insects and chemical pesticides sprinkler and other methods, can effectively control the citrus gray weevil damage.