Effect of Rice Sowing Date on Occurrence of Small Brown Planthopper and Epidemics of Planthopper-Transmitted Rice Stripe Viral Disease  

作　　者：ZHU Jin-liang ZHU Zeng-rong ZHOU Yin LU Qiang SUN Xiang-liang TAO Xian-guo CHEN Yue WANG Hua-di CHENG Jia-an 

机构地区：[1]Jiaxing Plant Protection Station, Bureau of Agricultural Economy of Jiaxing City, Jiaxing 314050, P.R. China [2]State Key Laboratory of Rice Biology/Institute of Insect Sciences, Zhejiang University, Hangzhou 310029, P.R.China [3]Jiaxing Academy of Agricultural Sciences, Jiaxing 314016, P.R.China [4]Food and Oil Station, Xiuzhou District, Jiaxing 314031, P.R. China [5]Bureau of Plant Protection and Quarantine, Department of Agriculture of Zhejiang Province, Hangzhou 310020, P.R. China

出　　处：《Agricultural Sciences in China》2009年第3期332-341,共10页中国农业科学（英文版）

基　　金：financially supported by the National High-Tech R&D Program of China (863 Program,2007AA10Z220);National Key Technologies R&D Program during the 11th Five-Year Plan period of China(2006BAD17B06);the National Basic Research Program of China (973 Program, 2002CB111400);Zhejiang Provincial Key Project (2009CB119203);Zhejiang Yangtze Delta Key Sci & Tech Collaborative Program,China (2004E60055);Jiaxing City Key Sci & Tech Project, China (2005AZ3002)

摘　　要：To understand the relationship between rice sowing date and occurrence of the rice small brown planthopper （SBPH） Laodelphax striatellus Fallen and the epidemics of the planthopper-transmitted rice stripe viral （RSV） disease, four sowing dates of rice were evaluated in 2006 and 2007. The results showed that the peak density of SBPH and RSV incidence in the nursery and in the transplanted field decreased with the delay of sowing date in single crop of japonica rice in north Zhejiang Province of China. The relationship between seedling RSV incidence at the end of the nursery trial with sowing date was well described by Weibull equation. The area under the curve of population dynamics （AUCPD or planthopper-day accumulation） or the peak density of the planthopper in the nursery could be summarized by a logistic equation. RSV incidence in the transplanted fields could be characterized quantitatively by a multivariate regression equation, including the variables of sowing date, peak density of the vector, and RSV incidence at the end of the nursery trial. That the descriptive model excluded the AUCPD in transplanted field implies that this variable is not necessary in forecasting disease epidemics in the field. The 2-year experiments sufficiently indicated that suitable sowing of rice could be used as one of the effective measures to control the vector population and therefore the planthopper-transmitted RSV on a larger scale. The optimal sowing date for the single-cropped transplanted japonica rice is recommended from late May to early June in north Zhejiang, China.To understand the relationship between rice sowing date and occurrence of the rice small brown planthopper （SBPH） Laodelphax striatellus Fallen and the epidemics of the planthopper-transmitted rice stripe viral （RSV） disease, four sowing dates of rice were evaluated in 2006 and 2007. The results showed that the peak density of SBPH and RSV incidence in the nursery and in the transplanted field decreased with the delay of sowing date in single crop of japonica rice in north Zhejiang Province of China. The relationship between seedling RSV incidence at the end of the nursery trial with sowing date was well described by Weibull equation. The area under the curve of population dynamics （AUCPD or planthopper-day accumulation） or the peak density of the planthopper in the nursery could be summarized by a logistic equation. RSV incidence in the transplanted fields could be characterized quantitatively by a multivariate regression equation, including the variables of sowing date, peak density of the vector, and RSV incidence at the end of the nursery trial. That the descriptive model excluded the AUCPD in transplanted field implies that this variable is not necessary in forecasting disease epidemics in the field. The 2-year experiments sufficiently indicated that suitable sowing of rice could be used as one of the effective measures to control the vector population and therefore the planthopper-transmitted RSV on a larger scale. The optimal sowing date for the single-cropped transplanted japonica rice is recommended from late May to early June in north Zhejiang, China.

关 键 词：RICE sowing date Laodelphax striatellus rice stripe viral disease EPIDEMICS 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治] S435.112.3[农业科学—植物保护]