云南省三七圆斑病发生情况调查

Field Investigation of Round Spot on Sanqi(Panax notoginseng) in Yunnan Province

由槭菌刺孢引起的圆斑病是三七的主要叶部病害,为了解全省三七产区圆斑病的发生情况,开展了本研究。2015年,在三七主要产区文山州、红河州、玉溪市、昆明市、曲靖市、保山市、临沧市和普洱市开展了圆斑病的发生情况调查,在文山市平坝乡、文山市德厚镇、砚山县维摩乡、砚山县干河乡、西畴县新马街乡、丘北县天星乡、丘北县锦屏镇、麻栗坡县大坪镇、弥勒县五山乡、建水县青龙镇、新平县平甸乡、新平县建兴乡、石林县圭山镇和罗平县罗雄镇开展了三七圆斑病的发生动态研究。结果表明:三七圆斑病是所有三七产区的共有病害;5月是三七圆斑病的初发期,7月是三七圆斑病发生的转折时期,8月和9月是二年生和三年生三七圆斑病的发病高峰期。

Round spot caused by Mycocentrospora acerina（Hartig.） Deighton is a principal leaf fungal disease on Sanqi, Panax notoginseng（Burk.） F H Chen. This study is conducted to understand the current occurrence of round spot on Sanqi in Yunnan province. Field investigation of general situation of occurrence of round spot was carried out in dominant Sanqi planting area in Wenshan, Honghe, Yuxi, Kunming, Qujing, Baoshan, Lincang and Pu＇er in 2015. The dynamic of round spot was monitored in Pingba and Dehou of Wenshan, Weimo and Ganhe of Yanshan, Xinmajie of Xichou, Tianxing and Jinping of Qiubei, Wushan of Mi＇le, Qinglong of Jianshui, Pingdian and Jianxing of Xinping, Guishan of Shilin and Luoxiong of Luoping from May to October in 2015. The results show that： round spot is a widespread disease on Sanqi in all planting areas; May is an initial stage, July is a climacteric stage, August and September are climax stages of round spot on two-and three-year-old Sanqi.