纹枯病是水稻常发、多发病害,随着近些年施肥特别是氮肥的使用量不断增加,植株分蘖增多且生长茂盛,田间荫蔽度加剧,更加重了纹枯病的发生。稻田若染发纹枯病,损失一般5%~15%,较重的20%~40%,严重的成片倒伏,损失达60%~70%或基本无收。因此,务必高度重视,采取综合措施进行防控。 Sheath blight is a common and frequent disease in rice. With the increasing use of fertilizers, especially nitrogen fertilizer in recent years, tillering increased and flourishing, and the degree of shade in the field intensified and the occurrence of sheath blight worsened. If the rice crop blight sheath blight, the general loss of 5% to 15%, heavier 20% to 40%, severe sheet lodging, the loss of up to 60% to 70% or no income. Therefore, we must attach great importance to take comprehensive measures to prevent and control.