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| 我国水稻“两迁”害虫迁飞格局的时空演变特征 |
| Tracing the shifting spatio-temporal migration patterns of rice planthoppers and leafrollers across China |
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| DOI： |
| 中文关键词: 褐飞虱 白背飞虱 稻纵卷叶螟 迁飞格局 时空变化 |
| 英文关键词:Nilaparvata lugens Sogatella furcifera Cnaphalocrocis medinalis migration patterns spatio-temporal changes |
| 基金项目:国家重点研发计划（2021YFD1401102）；国家自然科学基金（32372521） |
| Author Name | Affiliation | | ZHANG Xue-Yan, ZHANG Jia-Hao, ZHANG Yi-Yang, ZHANG Shi-Yan, GAO Bo-Ya, WU Yan, ZENG Juan, HU Gao | 1. State Key Laboratory of Agricultural and Forestry Biosecurity, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
2. China National Agro-Tech Extension and Service Center, Beijing 100125, China
3. Guizhou Provincial Key Laboratory of Agricultural Biosafety, Guiyang University, Guiyang 550005, China |
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| 中文摘要: |
| 【目的】水稻“两迁”害虫（褐飞虱、白背飞虱和稻纵卷叶螟）严重威胁我国水稻粮食安全。为明确水稻“两迁”害虫在全球气候变化、种植制度变革等新形势下的发生动态和迁飞规律。【方法】本文基于2000年以来的虫情监测数据，系统解析了我国水稻“两迁”害虫的迁飞格局时空演变的特征。【结果】稻飞虱全国虫量总体呈下降趋势，并有两个明显阶段；始见期除褐飞虱在长江流域有所延迟外，全国其他地区无明显变化；峰期除白背飞虱在南岭区、岭北区和沿江区提前外，其余地区亦无显著波动。北迁前期，稻飞虱主降区北移趋势显著。进一步聚焦区域尺度发现，部分稻区在总体趋降的背景下仍出现显著波动：南岭区及岭北区春季迁入量未见下降，且峰期提前；江淮稻区稻飞虱发生总体虽呈下降趋势，但变异系数显著上升，表明区域内虫量年际波动加剧；西南地区四川的白背飞虱在春夏季迁入期虫量呈增加态势。稻纵卷叶螟田间赶蛾虫量总体呈下降趋势；始见期在江淮区、云南省有所推迟；主降区在春末北移，使得南岭区呈现峰期提前的现象。【结论】本研究结果可为全球变暖新形势下的水稻“两迁”害虫精确测报与有效防控提供理论支持。 |
| 英文摘要: |
| 【Aim】The 'two migratory' pests of rice (brown planthopper Nilaparvata lugens (St?l), white-backed planthopper Sogatella furcifera (Horváth), and rice leafroller Cnaphalocrocis medinalis (Guenée)) have long posed a serious threat to the safe production of rice in China. This study aims to clarify the occurrence dynamics and migration patterns of the 'two migratory' rice pests under new circumstances such as global climate change and changes in cropping systems.【Methods】Based on pest monitoring data since 2000, the spatio-temporal evolution characteristics of the migration pattern of rice 'two migratory' pests in China was systematically analyzed. 【Results】Nationwide, the cumulative population of planthoppers declined over the study period, with two distinct stages. The initial appearance period of brown planthoppers was delayed in the Yangtze River basin, but remained unchanged elsewhere. The peak period of white-backed planthopper advanced in the Nanling area, north of Nanling area and Yangtze River Valley, whereas no significant shifts were detected in other areas. During the initial northward progression, the mean latitude of the main gathering areas shifted significantly poleward. Zooming to regional scale, significant fluctuations were noticed against the overall declining trend: spring immigration into the Nanling and north of Nanling area showed no decline; instead, the peak period advanced. In contrast, the number of rice planthoppers in the Yangtze Huaihe River area declined on the whole, although the coefficient of variation rose sharply, indicating intensified annual fluctuations in local populations. In Sichuan (Southwest China), the population of white-backed planthopper increased during the spring and summer migration seasons. The field population of the rice leafroller generally showed a declining trend; the initial appearance period was delayed in the Yangtze Huaihe River area and Yunnan Province; the main gathering areas shifted northward in late spring, leading to earlier peak periods in the Nanling area. 【Conclusion】The results of this study can provide theoretical support for the accurate prediction and effective control of rice migratory pests in the context of global warming. |
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