Rice planting systems, global warming and outbreaks of Nilaparvata lugens (Stal)
Rice planting systems, global warming and outbreaks of Nilaparvata lugens (Stal)
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DOI：
10.1017/s0007485310000313
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发表时间：
2011-04-01
影响因子：
1.9
通讯作者：
Zhai, B. P.
中科院分区：
文献类型：
--
作者：
Hu, G.;Cheng, X. N.;Zhai, B. P.
褐飞虱（BPH, Nilaparvata lugens (Stal)）是东亚和南亚温带和热带地区最严重的水稻害虫之一，在过去几年中变得尤为严重。为分析水稻种植制度变化对褐飞虱种群动态的影响，于2007年4 - 10月在海南、广西、安徽、上海、福建、广东等6个省（市）近40个县进行了褐飞虱发生分布的野外调查，并收集了褐飞虱的诱蚊灯和卵巢解剖等相关数据。中国水稻单、双季作混作区主要有湖北、皖南和安徽中部、湖南北部和江西北部。在这些地区，自1997年以来，双季稻的种植已经大大减少，单季稻的种植迅速增加。调查结果表明，6、7月是褐飞虱移栽高峰，此时单季稻正处于分蘖至孕穗期，适合褐飞虱移栽，而早稻已成熟，大部分晚稻尚未移栽。来自南方水稻地区的BPH移民更喜欢在单作稻田中居住和繁殖。此外，早稻和晚稻之间的耕作活动中断了双季稻中褐飞虱种群的持续生长。结果表明，与30年前相比，长江中下游浮游生物的时空动态和迁移模式发生了显著变化。在混作区，由于适宜性高，单季稻中褐飞虱种群生长迅速，局部危害严重，8月下旬、9月上旬出现了大翅虫后代向长三角大量迁徙的现象。
Brown Planthopper (BPH, Nilaparvata lugens (Stal)) is one of the most serious pests of rice in both temperate and tropical regions of East and South Asia and has become especially problematic over the past few years. In order to analyze the effect of the change of rice cropping system on the population dynamics of BPH, field surveys of the occurrence and distribution of BPH were performed and other relevant data, including light trap data and ovary dissection data were collected in nearly 40 Chinese counties encompassing six provinces (or municipalities), including Hainan, Guangxi, Anhui, Shanghai, Fujian and Guangdong from April to October in 2007.The mixed planting areas of single- and double-cropping rice in China include Hubei, South and Central Anhui, North Hunan, and North Jiangxi. In these areas, double-cropping rice has now been greatly reduced and single-cropping rice has been rapidly increasing since 1997. The surveys revealed that when the immigration peak of BPH occurred in June and July, the single-cropping rice was at the tillering to booting stage and fit for BPH, but early rice had already matured and most of late rice had not yet been transplanted. BPH immigrants from southern rice areas prefer to inhabit and breed in single-cropping rice paddies. Moreover, farming activities between early rice and late rice interrupted the continuous growth of BPH populations in double-cropping rice paddies. As a result, in comparison with data collected 30 years ago, the spatiotemporal dynamics and migration patterns of BPH have dramatically changed in the lower-middle reaches of the Yangtze River. In the mixed planting areas, due to their high suitability, the BPH population in single-cropping rice grew so quickly that it caused serious local damage and there was mass emigration of macropterous progeny to the Yangtze River Delta in late August and early September.