沿江地区水稻穗颈瘟关键防控技术的研究

Study on Control Technology of Some Fungicides against Rice Ear Neck Blast

防治穗颈瘟的配套关键技术是推广种植抗稻瘟病或耐病的水稻品种；掌握穗颈瘟防治的最佳适期，即在水稻破口抽穗5％～10％时突击用药；隔5～7d再用药1次；防治方法、药剂及用量分别为25％吡唑醚菌酯EC70mL、45％肟菌·己唑醇WG20g、10％嘧菌酯CS90g、20％三环唑WP100～120g、20％井·烯·三环唑WP150g。提倡低容量喷雾、推广弥雾机或低水量细喷雾，水量少，浓度高，雾滴细，粘着力强，效果好。

Application of resistant rice is the key and matching technology for controlling rice ear neck blast. When the rice rupturing and heading was 5%-10%, it was the optimum period of controlling rice ear neck blast, sprayed several test fungicides and 5-7 days later done again. The results of field trial showed that pyraclostrobin 25% EC, trifloxystrobin＋hexaconazole 45% WC~ azoxystrobin 10% CS, tricyclazole 20% WP and jinggangmycin＋diniconazole＋ tricyclazole 20% WP had good effect to control rice ear neck blast, and the optimum amounts were 70 mL, 20 g, 90 g, 100 -120 g, 150 g, respectively. The application of mistblower or low water quantity and fine mist spraying, low volume spraying should be expanded, and they were suitable for controlling rice ear neck blast.