湖南省水稻病虫害发生特点及趋势分析

Occurring Characters and Trend of Diseases and Insect Pests of Rice in Hunan Province

湖南省地理、气候条件优越,适宜水稻生长,也利于各种水稻有害生物的发生危害。对2001～2011年水稻螟虫、稻飞虱、稻纵卷叶螟、纹枯病等主要病虫害及次要病虫害的发生特点进行了分析。预计受气候变暖、水稻耕种方式改变等因素的影响,今后一段时期湖南省水稻病虫害发生将呈现增加趋势。

With favorable geography and climate conditions, Hunan Province is very suitable for rice growth, also beneficial to the occurrence of rice pests and diseases. In recent years, rice stem borers, hopper, leaf roller and sheath blight occurred widespread and severe and new pests are continuously emerging, which became a serious threat to agricultural production. With the effect of climate warming and changes in cultivation ways, rice pests and diseases will continue to be severe in next several years in Hunan.