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豌豆象属鞘翅目豆象科,主要危害豌豆。近几年来,豌豆象在我团发生日趋严重。一九七五年,全团豌豆平均被蛀率为8.6％,有的单位高达10％以上。豌豆被蛀后,重量减轻37％,品质变劣,严重者不堪食用,发芽率降低到75％。一九七六年,通过种子处理、生长期喷药等措施,豌豆被蛀率下降到4.3％,有的单位控制在0.5％以下。 一、发生情况
Pea is a genus of Coleoptera legumes, the main hazard to peas. In recent years, the pea phenomenon becomes more and more serious in my regiment. In 1975, the average bolting rate of peas in the whole group was 8.6%, with some units up to 10% or more. After the pea was moth-eaten, the weight was reduced by 37%, the quality was deteriorated, and those who were seriously ill were eaten. The germination rate was reduced to 75%. In 1976, through the measures of seed treatment and spraying during the growth period, the pea rate was reduced to 4.3% and some units under 0.5%. First, what happened?