籽粒苋白锈病的发生与防治对策

Amaranth white rust occurrence and control measures

经对籽粒苋白锈病的病情调查、病原鉴定和防治进行研究 ,结果表明 :该病是由苋白锈Albugobliti引起的 ,开花期至成熟期、刈割期是发病的高峰期 ,秋季重于夏季 ;加强播前管理 ,适期播种、合理密植 ,加强生长期管理 ,并配合 58%甲霜灵锰锌可湿性粉剂 (WP) 50 0倍液、6 4%杀毒矾WP 4 0 0倍液、6 9%安克锰锌WP6 0 0倍液、70 %克露WP 80 0倍液叶面喷雾防治 ,防效 94

An investigation was carried out into the pathology, p athogen identification, and control of Amaranthus paniculatus white rust. It was found that the disease is caused by Albugo bliti. From the flowering st age to mature stage, to the cutting stage, is the peak disease period. The disea se is more serious in autumn than summer. Control measures include strengthening pre-sowing management, timely sowing, reasonable planting density, strengtheni ng management during growth, along with leaf spraying of 58% Metalaxyl+Mancozeb wettable powder (WP) (500× dilution), 64% Oxadixyl+Mancozeb WP (400× dilution) , 69% Acrobat-MZ WP (600× dilution), and 70% Cymoxanil WP (800× dilution). Thi s has achieved over 94% protection.