这次不仅有褐飞虱的为害，而且还有另外两种飞虱，即白背飞虱 （WBPH），Sogatella furcifera，和灰飞虱（SBPH），Laodelahax striatella。
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The results suggest that E. crusgalli is the most suitable host plant of SBPH, followed by japonica rice varieties and then wheat.
研究表明灰飞虱的适宜寄主植物依次为稗草、粳稻品种和小麦。
The first generation of SBPH in wheat fields is the important period when the population enlarge and disperse to rice fields, and one of key periods for controlling it.
灰飞虱的麦田一代是其虫量扩增并向水稻迁移的重要时期，也是防治的重点时期之一。
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