水稻进入分蘖高峰期,稻田的小气候条件有利于纹枯病发生。掌握水稻纹枯病的关键防治技术,选用高效药剂适期施用,是确保防效和控制纹枯病发生最有效的措施。适期用药。水稻纹枯病的防治适期为始发期(病穴率大于5%)。此时用药效果好、持效期长,明显优于发病盛期用药,随着用药时间推迟,药剂防治纹枯病的效果逐渐下降。选准药剂。应选用高效、持效期长的药剂,以减少用药次 Rice tillering into the peak period, the microclimate conditions conducive to rice sheath blight. Grasp the key prevention and control of rice sheath blight disease, the choice of efficient use of pesticides on a regular basis, is to ensure prevention and control of sheath blight the most effective measures. Appropriate medication. The control of rice sheath blight suitable period of onset (disease point rate greater than 5%). At this point the drug effect is good, long duration, was significantly better than the peak incidence of medication, with the delay of medication time, the effect of drug control sheath blight decreased. Selection of drugs. Should use efficient, long duration of the agent, to reduce medication times