中国稻米

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南方水稻黑条矮缩病侵染对水稻产量的影响

  1. 1 浙江省东阳市植保站,浙江 东阳 322100;2 浙江省农业科学研究院植物保护与微生物研究所,杭州 310021; 3 浙江省武义县粮油站,浙江 武义 321200; 4 浙江省金华市植保站,浙江 金华 321017
  • 出版日期:2019-03-20 发布日期:2019-03-20
  • 基金资助:

    省部共建重点实验到培育基地自主设计项目(2010DS700124-ZZ1601)

Effects of Southern Rice Black-streaked Dwarf Disease on Yield of Rice

  • Online:2019-03-20 Published:2019-03-20

摘要:

南方水稻黑条矮缩病(SRBSDV)自2001年被首次发现以来,每年均有一些田块因该病而绝收,但目前关于该病害发生对水稻产量的影响报道较少。本文调查了不同水稻品种感染SRBSDV后对产量的影响以及不同防治措施对产量的影响情况。结果表明,在水稻处于发病初期(1级)稻谷的结实率和千粒重,不同品种相同发病级别的结实率和千粒重之间差异不显著;同一水稻品种结实率随SRBSDV发病程度加重而显著下降;科学防治稻田的SRBSDV病情指数(6.0%)显著低于农户自行防治稻田(48.6%)。农户自行防治稻田产量损失达65.0%以上。本研究旨在为明确该病害不同发病程度对水稻产量的影响提供依据。

关键词: 南方水稻黑条矮缩病, 品种, 产量, 防治水平

Abstract:

Southern rice black-streaked dwarf disease lead to low or no yield of some paddy rice each year since the first time which has been found in 2001. At present, there are few reports about the effect of the disease on yield of rice. This study investigated the effects of this disease and the effects of different control measures on rice yield under field condition. The results showed that there was no significant difference among different rice varieties when they are slightly (disease grade 1) infected by SRBSDV on seed setting rate and 1000-grain weight. The seed setting rate of the same rice variety were decreased significantly with the severity of the disease. The SRBSDV disease index (6.0) of scientific control field was significantly lower than that of farmers' self-control field (48.6%). The yield loss of farmer's field was over 65% than scientific control field. The purpose of this study was to provide a basis for understanding the effects of different incidence degree of the disease on yield of rice.

Key words: southern rice black-streaked dwarf disease, rice variety, yield, control level

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