稻飞虱在中国的潜在发生区预测

Prediction about the potential occurrence region of rice planthopper in China

稻飞虱是亚洲地区重要的水稻害虫,已被中国各省区列为重点防治虫害。研究利用物种分布模型对中国3种主要稻飞虱(褐飞虱Nilaparvata lugens、白背飞虱Sogatella furcifera和灰飞虱Laodelphax striatellus)的潜在发生区域进行分析预测。结果表明,3种稻飞虱发生的主要区域集中在华南区、华中区和华北区,西南区和东北区次之,其它区域发生风险较低。环境变量分析表明最湿月降雨量对3个物种建模的重要性最高,其次为年平均气温和等温性。研究揭示了气候条件对稻飞虱发生区域的影响,分析预测了中国稻飞虱可能发生的潜在范围。

Rice planthopper is an important rice pest in Asia. It has long been listed as a key pest control by provinces and regions in China. In this study, the potential occurrence areas of three main rice planthoppers(Nilaparvata lugens, Sogatella furcifera and Laodelphax striatellus) in China were analyzed and predicted by species distribution model. The results showed that the three rice planthopper occurred mainly in South China, Central China and North China, followed by Southwest China and Northeast China, and the risk of occurrence in other regions was low. The analysis of environmental variables showed that the precipitation of the wettest month was the most important for the modeling of the three species, followed by the annual mean temperature and isothermality. This study only focuses on the impact of climatic conditions on the occurrence area of rice planthopper, and preliminarily discusses the potential range of rice planthopper in China.