江州区水稻病虫发生消长及种群演替与农田生态环境变化关系分析

根据近50年来的病虫历史资料及相关资料分析发现,随着耕作制度、品种布局和栽培水平等农业条件的不断变化,主要病虫种群消长发生了明显的演变,金龟甲、飞蝗、粘虫、稻苞虫、稻白叶枯病等由常发性、关键性病虫变为次要病虫,稻瘟病、三化螟、稻瘿蚊等由潜发性、间歇性病虫变为常发性病虫,稻卷叶虫、稻飞虱、稻叶水蝇、稻细条病等则由一般性、局部性病虫变为全面性、关键性病虫。病虫发生消长及种群演替与农田生态环境变化关系的分析表明两者关系非常密切。

Relationship between the ecological environment change in field and the occurrence growth and decline and population succession of rice diseases and pests in Jiangzhou district

The history information of diseases and pests and the related information in recent 50 years were analyzed,and it was found that the population growth and decline of rice diseases and pests has changed obviously with the change of agricultural cultivation system,variety distribution.The frequent occurrence and major diseases and pests have become minor ones such as Scarabaeoidea,migratory locust,armyworm,rice skipper and rice bacterial leaf blight,etc.The latent and intermittent occurrence have become frequent diseases and pests such as rice blast,Tryporyza incertulas and rice gall midge,etc.The local occurrence has become common and major diseases and pests such as rice leaf folder,planthopper,Hydrellia sinica Fan et Xia,and rice bacterial leaf streak,etc.The relationship between the ecological environment change in field and the occurrence growth and decline and population succession of rice diseases and pests were very close.