| 草地贪夜蛾在云南冬季甜玉米上的生物学习性及为害状观察 |
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| 引用本文： | 太红坤,郭井菲,张 峰,王根权,安智燕,张 婷,苏华亮,许君林,杨立秋,王振营.草地贪夜蛾在云南冬季甜玉米上的生物学习性及为害状观察[J].植物保护,2019,45(5):91-95. |
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| 作者姓名： | 太红坤 郭井菲 张 峰 王根权 安智燕 张 婷 苏华亮 许君林 杨立秋 王振营 |
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| 作者单位： | 1. 云南省德宏州植保植检站, 芒市 678400; 2. 中国农业科学院植物保护研究所, 北京 100193; 3. 农业农村部-CABI生物安全联合实验室, 北京 100193; 4. 云南省德宏州芒市植保植检站, 芒市 678400; 5. 云南省德宏州瑞丽市植保植检站, 瑞丽 678600; 6. 云南省德宏州陇川县植保植检站, 陇川 678700; 7. 云南省德宏州盈江县植保植检站, 盈江 679300; 8. 云南省德宏州梁河县植保植检站, 梁河 679200 |
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| 基金项目： | 中国农业科学院草地贪夜蛾联合攻关重大科技任务(Y2019YJ06); 德宏州第四批创新人才资助项目(德创人2015-4-2) |
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| 摘 要： | 田间调查表明,2019年1月草地贪夜蛾入侵云南省后,在德宏州4县市冬季甜玉米上均有发生为害,世代重叠严重。5月份以前主要为害冬季甜玉米,平均被害株率和百株虫量分别为4.55%和5.72头。成虫喜产卵于玉米心叶上部正面,1～6龄幼虫可取食为害玉米的生长点、叶片、雄穗和果穗。其中1～3龄幼虫具有聚集为害习性和趋嫩性,常取食幼嫩的心叶叶肉,4～6龄幼虫常啃食叶片和雄穗,咬断生长点,在心叶期和抽雄期形成典型被害状。心叶期和抽雄期玉米被害株率较高,且抽雄期被害株率显著高于苗期和灌浆期。
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| 关 键 词： | 草地贪夜蛾 冬季甜玉米 生物学习性 为害 |
| 收稿时间： | 2019/7/9 0:00:00 |
| 修稿时间： | 2019/7/16 0:00:00 |
Biological characteristics and damage symptom of the fall armywormSpodoptera frugiperda on winter sown sweet corn in Yunnan province |
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| TAI Hongkun,GUO Jingfei,ZHANG Feng,WANG Genquan,AN Zhiyan,ZHANG Ting,SU Hualiang,XU Junlin,YANG Liqiu,WANG Zhenying.Biological characteristics and damage symptom of the fall armywormSpodoptera frugiperda on winter sown sweet corn in Yunnan province[J].Plant Protection,2019,45(5):91-95. |
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| Authors: | TAI Hongkun GUO Jingfei ZHANG Feng WANG Genquan AN Zhiyan ZHANG Ting SU Hualiang XU Junlin YANG Liqiu WANG Zhenying |
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| Institution: | 1. Plant Protection and Quarantine Station, Dehong Prefecture, Yunnan Province, Mangshi 678400, China; 2. Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; 3. MARA-CABI Joint Laboratory for Bio-safety, Beijing 100193, China, 4. Mangshi Plant Protection andQuarantine Station, Dehong Prefecture, Yunnan Province, Mangshi 678400, China; 5. Ruili Plant Protection andQuarantine Station, Dehong Prefecture, Yunnan Province, Ruili 678600, China; 6. Longchuan Plant Protection andQuarantine Station, Dehong Prefecture, Yunnan Province, Longchuan 678700, China; 7. Yingjiang PlantProtection and Quarantine Station, Dehong Prefecture, Yunnan Province, Yingjiang 679300, China; 8. Lianghe Plant Protection and Quarantine Station, Dehong Prefecture, Yunnan Province, Lianghe 679200, China |
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| Abstract: | Field surveys showed that the fall armyworm, Spodoptera frugiperda (J.E.Smith) occurred on winter sown sweet corn in four counties/cities of Dehong prefecture with overlapped generations since it had been reported to invade Yunnan province in January of 2019. S.frugiperda mainly damaged winter sown sweet corn before May. The percentage of damaged corn plants was 4.55 %, and the number of larvae per 100 plants was 5.72 individuals, respectively. The female moths prefer the lateral side of corn leaves in the upper part of plant to lay their eggs. S.frugiperda has six larval instars, feeding different parts of the corn plants, such as growing point, leaf, tassel and ear. Young larvae (1st-3rd instar) tend to crowd and attack the mesophyll of the young whorls. Older larvae (4th-6th instar) feed on leaves, tassel and cut the growing point, causing the typical symptoms at whorl and tasseling stage. Damage percentages of whorl and tasseling stage were higher than those of seedling and filling stage, and the damage percentage of tasseling stage was significantly higher than those of seedling and filling stage. |
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| Keywords: | Spodoptera frugiperda winter sown sweet corn biological characteristics damage |
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