摘要
2019年10月31日我们在楚雄州元谋县(25.899°N,101.791°E)青稞、燕麦、糜子和小麦田发现草地贪夜蛾Spodoptera frugiperda(J.E.Smith),发生严重。田间调查表明:青稞、燕麦、糜子和小麦的受害株(丛)率分别为90.63%、31.64%、100%和86.84%,有虫株(丛)率分别为24.65%、17.19%、12.20%和27.19%,百株虫量分别为28.13、23.05、12头和42.98头。同时,发现草地贪夜蛾在青稞、燕麦、糜子上的为害特征与在玉米上的特征不同,表现为低龄幼虫食叶蛀心,高龄幼虫切根断蘖(穗)。与在小麦上的为害特征相似:1~2龄幼虫分布于叶片和心叶上;3~4龄幼虫向下移动至中部叶片、叶鞘和近地表面的分蘖着生处;4~6龄幼虫多数躲避在麦丛基部和表土下1 cm根茎连接处和缝隙中,与地下害虫的为害特征相似,不易发现,应引起重视。
On 31 October,2019,we confirmed the heavily damage of Spodoptera frugiperda(J.E.Smith)on highland barley,oat,prosomillet and wheat in Yuanmou county(25.899°N,101.791°E),Chuxiong prefecture,Yunnan province.Field investigation showed that,on highland barley,oat,prosomillet and wheat,the percentages of damaged plant were 90.63%,31.64%,100%and 86.84%,respectively;the percentages of plant with S.frugiperda larva were 24.65%,17.19%,12.20%and 27.19%,respectively;and the larvae densities were 28.13,23.05,12 and 42.98 individuals per hundred plants,respectively.At the same time,the symptoms of damage caused by S.frugiperda on wheat,highland barley,oats and prosomillet were different from that on maize.That is,the younger larvae(1st-2nd instars)ate leaves or bored into stem,and the older larvae(3rd-6th instars)cut roots and ears.Similar symptoms were found on wheat,the 1st and 2nd instars usually feed on tender leaves,while the 3rd and 4th instars moved down to the middle leaves,leaf sheaths or tillering sites near the ground surface.Most of the 4th-6th instars hide in the base of wheat clump,the stem base 1 cm under the soil surface,and soil gaps.The damage symptom caused by older larvae(4th-6th instars)was similar to that caused by underground pests,which is not easy to find in field and should be paid more attention.
作者
赵雪晴
陈福寿
尹艳琼
张红梅
李向永
戴剑鸿
王贵斌
李永川
谌爱东
ZHAO Xueqing;CHEN Fushou;YIN Yanqiong;ZHANG Hongmei;LI Xiangyong;DAI Jianhong;WANG Guibin;LI Yongchuan;CHEN Aidong(Agricultural Environment and Resources Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China;Yuanmou County Plant Protection and Plant Quarantine Station, Yunnan Province, Yuanmou 651300, China;Chuxiong Prefecture Plant Protection and Plant Quarantine Station, Yunnan Province, Chuxiong 675000, China;Yunnan Plant Protection and Plant Quarantine Station, Kunming 650034, China)
出处
《植物保护》
CAS
CSCD
北大核心
2020年第2期216-221,共6页
Plant Protection
基金
云南省财政专项
云南省重点研发计划(2019IB007)
云南省创新团队培育对象。
关键词
草地贪夜蛾
青稞
燕麦
糜子
为害特征
元谋
云南
Spodoptera frugiperda
highland barley
oat
prosomillet
damage characteristics
Yuanmou county
Yunnan province
