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豆野螟Maruea testulalis Geyer(1832)是我国豆类蔬菜,特别是长豇豆Vigna sesguipedalis的主要害虫。在杭州,一年发生七代,以预蛹越冬。以1—3代为害为主。一龄幼虫头宽0.197毫米,Dyar常数为1.653。随虫龄增加,取食场所从花器转向豆荚。产卵前期为3—4天,羽化后6—8天卵量最集中。幼虫、蛹发育历期与日平均温度间的对数回归方程为Y_1=3.5825—1.7766x,Y_p=3.8118-2.0800x。卵期2—4天。田间为害以6—8月为主;灯下威虫有7月和9—10月两个高峰。有分距姬蜂Cremastus sp.和稻苞虫寄蝇Pseudoperiehaeta insidiosa二种天敌。应用80％敌敌畏800倍等农药,在百花虫数达40头上下、二龄幼虫约占50％时,兼喷植株、落地花,能达到降低花、荚被害率,提高鲜荚产量、品质和降低成本的效果。
Bean borer Maruea testulalis Geyer (1832) is a major pest of legume vegetables, especially Vigna sesguipedalis. In Hangzhou, seven generations occur a year, pre-pupa overwintering. 1-3 generations of harm-based. First instar larvae have a head width of 0.197 mm and a Dyar constant of 1.653. With the increase of insects, feeding sites from the flower to the pods. 3-4 days before spawning, 6-8 days after eclosion most concentrated eggs. The logarithmic regression equation between larval and pupal developmental duration and daily average temperature was Y1 = 3.5825-1.7766x and Y_p = 3.8118-2.0800x. Eggs 2-4 days. Field damage in June-August-based; light weeds in July and September-October two peaks. There are two species of insect from Cremastus sp. And rice insects to send flies Pseudoperiehaeta insidiosa two kinds of natural enemies. Application of 80% dichlorvos 800 times and other pesticides, the number of hundred insects up and down, the second instar larvae account for about 50%, and spraying plants, flowers, can reduce the rate of flower and pod damage, improve fresh pods yield, quality and Reduce the cost of the effect.