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大豆是一种其种子含有丰富蛋白质的豆科植物,外形呈椭圆形、球形,颜色有黄色、淡绿色、黑色等,故又有黄豆、青豆、黑豆之称。大豆的病虫害对大豆的正常生长危害很大,严重时减产损失达30%以上。一、农业防治(一)合理进行轮作换茬对土传病害和以病残体越冬为主的病害以及在土中越冬的害虫(大豆潜根蝇、二条叶甲等),通过3年轮作即可减轻危害。
Soybean is a legume rich in protein seeds, oval-shaped appearance, spherical, yellow, light green, black, so there are soybeans, green beans, black beans known. Soybean pests and diseases on the normal growth of soybean is very harmful, in serious cases, loss of more than 30% loss. I. Prevention and control of agriculture (I) Reasonable rotation and rotation of stubble on soil-borne diseases and disease-borne diseases and overwintering pests in the soil (soybean stalks, two leaf A, etc.), through the three-wheeled rotation Can reduce the hazard.