摘要
缅甸是我国草地贪夜蛾的重要境外虫源区,为了掌握草地贪夜蛾在缅甸的发生与防控情况,2019年5月19-25日,云南省农业科学院与缅甸农业研究司专家联合对缅甸南部、中部、中北部和东部草地贪夜蛾开展了实地调查。结果表明:缅甸全境均有草地贪夜蛾发生,为害严重,田间多种虫态并存。其中,南部玉米大部分已经收获,虫株率62.50%~97.50%;中部区域种植少量的商品甜玉米,防治到位,虫株率6.00%~7.50%;中北部曼德勒敏建玉米种植面积最大,达8000hm^2,80%的地块已成熟收获,处于吐丝-乳熟期的田块虫株率达100%,受害严重;东部掸邦虫株率59%,虫口密度2.60头/株。玉米是缅甸第二大种植作物,全年玉米种植面积达47万~52万hm^2,其中与我国云南接壤的东部掸邦是主要种植区。到5月前因无有效降雨,全境玉米尚未大面积种植,仅有零星种植,随着雨季的来临,玉米种植面积将全面增加,草地贪夜蛾种群数量也将随之增加。因此,加强与缅甸相关部门合作,密切掌握缅甸玉米种植及草地贪夜蛾的发生与防控情况,对我国草地贪夜蛾的监测预警及防控有重要的参考价值。
Myanmar is an important source area of the fall armyworm Spodoptera frugiperda(J.E.Smith)of China.In order to know well the occurrence and control situation of S.frugiperda in Myanmar,experts from Yunnan Academy of Agricultural Sciences(YAAS)and Department of Agricultural Research(DAR,Myanmar)conducted a joint-field survey on S.frugiperda in the southern,central,central north and eastern of Myanmar from May 19 to 25,2019.The results showed that S.frugiperda occurred in all parts of Myanmar and caused serious damage to corn production,and coexisted with various stages in the field.In the southern,most of corn has been harvested,with the infestation rate of 62.50%-97.50%.In the central,a small amount of commercial sweet maize has been planted and the S.frugiperda was well controlled with the infestation rate of 6.00%-7.50%.In the central north,Myingyan district in Mandalay province,the largest corn planting area of 8 000 hm^2,80%of the plots have been harvested,but in the unharvested plots,infested rate was 100%at the silk-milk stage of corn.In the eastern,Shan state,infestation rate was 59%and population density is 2.60 individuals/plant.Corn is the second largest planting crop in Myanmar,with a total planting area of 470 000-520 000 hm^2.Shan state,which is bordered with Yunnan province,is the main corn planting area.Before May,because of insufficient rainfall,corn is still unplanted in large area in Myanmar,but only sporadic planting.With the approach of rainy season,corn planting area will be increased throughout Myanmar,and the population of S.frugiperda will also increase.Therefore,we should strengthen the closely cooperation with relevant departments in Myanmar,and to master the detail information on the occurrence and control of S.frugiperda,which is important for monitoring,early warning and control of S.frugiperda in China.
作者
李向永
尹艳琼
吴阔
Khin Thein Nyunt
Khin Nyein Chan
赵雪晴
谌爱东
LI Xiangyong;YIN Yanqiong;WU Kuo;ZHAO Xueqing;CHEN Aidong(Institute of Agricultural Resources and Environment,Yunnan Academy of Agricultural Sciences,Kunming 650205,China;Institute of Biotechnology and Germplasm Resources,YunnanAcademy of Agricultural Sciences,Kunming 650205,China)
出处
《植物保护》
CAS
CSCD
北大核心
2019年第4期69-73,共5页
Plant Protection
基金
云南省科技攻关项目
关键词
草地贪夜蛾
发生情况
缅甸
Spodoptera frugiperda
occurrence situation
Myanmar
