| 太红坤1, 郭井菲2, 张 峰3, 王根权1, 安智燕4, 张 婷5, 苏华亮6, 许君林7, 杨立秋8, 王振营2*.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. |
| 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 |
| Biological characteristics and damage symptom of the fall armywormSpodoptera frugiperda on winter sown sweet corn in Yunnan province |
| 投稿时间：2019-07-09 修订日期：2019-07-16 |
| DOI：DOI: 10.16688/j.zwbh.2019349 |
| 中文关键词: 草地贪夜蛾 冬季甜玉米 生物学习性 为害 |
| 英文关键词:Spodoptera frugiperda winter sown sweet corn biological characteristics damage |
| 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) |
| 作者 | 单位 | | 太红坤1, 郭井菲2, 张 峰3, 王根权1, 安智燕4, 张 婷5, 苏华亮6, 许君林7, 杨立秋8, 王振营2* | 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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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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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