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大豆食心虫是大豆生产的主要害虫,一般年份虫食率在5%～10%,严重年份虫食率高达30%～60%。不但使产量降低,而且品质变劣。掌握好大豆食心虫的防治时期和方法,可将虫食率控制在2%～3%以下。大豆食心虫一年发生一代,以老熟的幼虫在土中结茧越冬。第二年7月下旬上浮到表土化蛹。7月末至8月初开始羽化为成虫,8月中旬为羽化盛期。成虫交尾后在嫩荚上产卵,卵经6～7天孵化为幼虫,幼虫在
Soybean borer is the main pest of soybean production, the general year pest feeding rate of 5% to 10%, severe pest feeding rate as high as 30% to 60%. Not only to reduce production, but also deterioration of quality. Grasp the prevention and treatment of soybean heartworm period and method, the insect-feeding rate can be controlled at 2% to 3%. Soybean borer worm occurs a generation a year, with mature larvae in the soil cocoon wintering. The second year in late July floating to the surface of the pupation. The end of July to early August began to emerge into adults, mid-August emergence period. The adult eggs lay on the tender pods after mating, and the eggs hatch after 6-7 days as larvae