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期 刊 ：植物保护学报 2009年

关键词：水稻；条纹叶枯病；发生动态；防治技术；

Keywords:rice, rice stripe virus, occurrence, control technique,

摘 要 ：2006—2007年系统调查河南省沿黄稻区灰飞虱和水稻条纹叶枯病的发生动态、测定灰飞虱带毒率,并进行防治技术对比试验。结果表明,灰飞虱成虫在5月中旬开始向水稻田迁飞,5月底至6月15日为成虫迁飞盛期,也是稻田虫量最大的时期。水稻条纹叶枯病发病高峰出现在7月4日至7月20日,与成虫迁飞密切相关。灰飞虱在沿黄稻区带毒率较高,且地区间差异较大,沿黄稻区5个市(县)的带毒率在15.4％~62.5％之间。控制秧田灰飞虱虫量,对水稻条纹叶枯病具有较好的防治效果。秧田使用防虫网覆盖并在移栽前使用10%吡虫啉喷雾对水稻条纹叶枯病的防效可达73.72%~88.40%;使用5％氟虫腈拌种并在移栽前使用10%吡虫啉喷雾的防效为70.48%~76.82%;秧田使用10％吡虫啉和80％敌敌畏混和喷雾的防效为78.85%~82.47%;使用5％氟虫腈喷雾的防效为77.18%~83.88%。

Abstract:The incidence of the disease and occurrence of the disease’s vector, the small brown planthopper (SBPH), Laodelphax striatellus Falln, were investigated systematically in rice production region of Henan Province along the Yellow River in 2006 and 2007, the viruliferous rate of SBPH was detected, and control efficiency of different methods against rice stripe virus were tested in the field. The results indicated that the peak period of adult SBPH migrated from wheat to rice appeared from end-May to mid-June, which was obviously related to the peak of the disease from July 4^th to July 20^th. The viruliferous rate of SBPH at 5 different places was 15.4%-62.5%, with a large variation among districts. The good control efficiency of rice strip virus was achieved by control number of SBPH in nursery. The control efficiency using insect-proof screen and spraying imidacloprid before transplanting was 73.72%-88.40%. The control efficiency of seed dressing using fipronil and spraying imidacloprid before transplanting was 70.48%-76.82%. The control efficiency of spraying imidacloprid+dichlorvos and spraying fipronil alone were 78.85%-82.47% and 77.18%-83.88%, respectively.

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