去年秋播以来，由于冬麦区持续偏暖，北方麦区干旱严重，有利于小麦红蜘蛛等害虫的越冬和繁衍。入春后，陕西、山西和甘肃等省麦区红蜘殊发生早，基数高，已开始进入盛发危害阶段；江淮、黄淮地区小麦纹枯病已由南往北相继进入发病始盛期，并呈明显的偏重至大发生趋势。小... Since the autumn seasons last autumn, due to the continued warming of the winter wheat area, the serious drought in the northern wheat area is in favor of overwintering and multiplying pests such as spider mites. After the spring, Shaanxi, Shanxi and Gansu provinces and regions such as red spider special early occurrence, high base, has begun to enter the stage of Sheng fatal; JAC, Huanghuai region wheat sheath blight from south to north have entered the onset of onset , And was obviously biased to the largest trend. small...