有读者来电问:小麦普遍拔了一两节,纹枯病还没有发生,能否用药预防纹枯病,选用井冈霉素预防效果怎么样?是否要在上午麦苗上有露水时施药?纹枯病是江苏省小麦上的常发性病害,可导致病株茎蘖死亡,或造成麦株养分与水分运输受阻,影响小麦正常生长发育。春季随着气温回升及小麦群体扩大,纹枯病病情上升快,在小麦拔节前后应注 A reader asked: wheat generally pull a section or two, the sheath blight has not occurred, whether medication to prevent sheath blight, use Jinggangmycin preventive effect how? Whether the morning wheat seedlings when there is dew spray? Bacterial blight is a common disease on wheat in Jiangsu Province. It can lead to the death of diseased plant stems and tillers, or obstruct the nutrient and water transport of wheat plants, affecting the normal growth and development of wheat. Spring with the temperature rise and the expansion of wheat populations, sheath blight disease increased rapidly, before and after the jointing of wheat should note