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利用频振式杀虫灯对徐州地区甘薯生长期金龟子发生种类和数量进行统计分析,研究金龟子发生规律及气象因子对其发生活动的影响,为甘薯田蛴螬的防治提供借鉴及指导。监测结果表明,徐州甘薯种植区金龟子主要有铜绿丽金龟、暗黑鳃金龟、阔胫红绒金龟、毛黄褐金龟4种。毛黄褐金龟在甘薯栽插初期已进入发生末期,发生量少;薯蔓并长期正值阔胫红绒金龟、铜绿丽金龟成虫盛发,诱捕数量多;暗黑鳃金龟盛发期为6月下旬至8月中旬,发生周期长,且成虫出土表现出“多—少—多—少”的规律性变化。气象因子对各种金龟子的活动影响差异较大,温暖无风的晴天各种金龟子均活动频繁;阴雨天暗黑鳃金龟、毛黄褐金龟、阔胫红绒金龟3种金龟子基本不活动;铜绿丽金龟阴天成虫诱捕数量甚至高于晴天,雨天则活动较少。
The frequency and type of pest-killing lamp were used to analyze the species and quantity of chafer in the sweet potato growing season in Xuzhou, and the influence of the occurrence of the chafer and its meteorological factors on the occurrence of the chafers were studied. The monitoring results showed that the chafers in the sweet potato planting area of Xuzhou were mainly Culex pipiens, Diabrotica grossedentata, Himalayan turtles and four species. Hairy brown tortoise in the early planting sweet potatoes have entered the end of the occurrence of less; potato manure and long-term value when the broad-tailed moss, Culex pipiens pallens full bloom; From late ten to mid-August, long period occurred and the unearthed adult showed the regular change of “more - less - more - less”. Meteorological factors on the activities of various chafers vary widely, warm and windless sunny all chafer activities are frequent; rainy days Diabrotica, Mao Huang brown turtle, broad-tailed red turtle beetle basically inactive three kinds of activity; The number of trapped adults in the cloudy day is even higher than that in the sunny day, but less in rainy days.