摘要
稻飞虱（白背飞虱和褐飞虱）在贵州省持续大面积发生，1991～1997年，年均发生面积约41万hm2（614．87万亩次）。两种飞虱的适温要求困地区和虫态而不同；在贵州各地发生5～8或9代不等，因海拔和生境不同而异；两种飞虱在贵州发生的初次虫源性质均为外地迁入，白背飞虱的主害代是3，4代，褐飞虱是4，5代。本文在总结贵州两种飞虱各代的发生关系及规律的基础上认为：5月下旬至7月中下旬是白背飞虱迁入主峰期和3，4代白背飞虱成虫盛发、大若虫为害盛期；7月下旬至8月上旬为褐飞虱全年最大迁入峰期，迁入虫和本地羽化虫迭加，常在8月中旬至9月上旬造成为害。据稻飞虱在贵州的发生规律和成交特点，防治对策应以推广抗虫（耐害）品种和健身栽培措施为基础，强化监测、准确测报是关键，主治成灾代是有效战术，并应注意选用高效低毒农药，控害护益。
Rice planthoppers, Sogatella furcifera Horvath and Nilaparvata lugens (Stal)are two major pests and damage rice of an area approximate to 410 thousand hectares each year in average from 199i to 1997 in Guizhou Province. The optimum temperature conditions for the plathoppers vary with different area of the province and with different stage of two species. They have 5-8 and 5-9 generations separately a y6ar depending on the meters above sea-level of field and the weather. The primary populations Of two species are migrants from the area outside Guishou. The migration peak of S. furcijera occurs in the last ten days of May to the last ten days of July. It is yet a period of developing of huge adult population and higher age nymphs of third.and fourth generations. The migration peak of N. lugens occurs during the last ten days of July to the first ten days of August and causes serious damage to rice. The principle of IPM strataly for the planthoppers is centralizing ecological-on regulating machinism by coordinated applications of cultural, biological control, based on forecast of POpulation development, chemical methods.
出处
《山地农业生物学报》
1998年第4期208-214,共7页
Journal of Mountain Agriculture and Biology
基金
贵州省"九五"科技攻关!971111
关键词
白背飞虱
褐飞虱
农业防治
稻飞虱
防治对策
Sogatella furcifera Nilaparvata lugens cutural control guizhou disasters
