摘要
蒙古沙潜是苗期重要害虫。年发生一代。以成虫越冬,翌年3月下旬开始产卵,8月上旬结束。雌虫年产卵量34—490粒,日产卵1—19粒。卵期4月中旬18—14天,7月下旬3—2天。孵化夜间多于白天。幼虫期6龄,1—5龄期4—7天,平均5—5.5天,6龄期逸20天左右。幼虫期50—56天。老熟幼虫在表土层化蛹,6月上旬开始,9月下旬终了。6月蛹期10—7天,7月4—5天。6月下旬羽化。成虫迁移只靠爬行,6月末至8月末高温能飞翔。有趋光性,耐饥力强,抗水性强,一生交配多次,食性非常复杂,对花生饼、豆饼有趋性。防治方法1.陷井豆饼诱杀。2.用种子重量的0.1—0.8%甲胺磷拌种,保苗效果显著。
The darkling ground beetle Gonocephalum riticulatum is one of the important pests during the seedling stage.It has one generation in a year and overwinters as adult.Oviposition begins in the last decade of March and ceases in the first decade of August.The fecundity per female is 34—490,and the number of eggs laid in one day is1—19.In the second decade of April the eggs hatch in 18—14 days,while in the last decade of July they hatch 2—3 days after oviposition.The eggs hatch usually more often by night than by day.There are 6 instars in the larval stage. The stadium of first to fifth instar lasts 4—7 days and 5—5.5 days on the average.The stadium of the sixth instar lasts 20 days.The larval stage on the whole is 51—56 days.The full-grown larva makes a cell in the upper layer of soil and pupates in it.The pupal period lasts 10—7 daye in June,but 4—5 days in July.Emergence begins in the second decade of June.The adults migrate only by walking.However,during the period from the last decade:of June to the last decade of August when it is very hot,migration may occur by flying,and the adults are attracted by the black light lamp in large numbers.The adults tolerate starvation and are resistant to water.They may copulate many times.Both the adults and laroae are polyphagous and show positive tropiem to groundcake and bean foots. There are two ways to control the pest:1.Pit capture by bean foots 2.Seed treatment with Tamaron (at a rate of 0.1—0.8% on the basis of the weight of seeds.)
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1989年第2期40-49,共10页
Journal of Hebei Agricultural University
