灰飞虱是宁夏粮食作物上的一大害虫。
The small brown rice planthopper is an injurious insect on food crop of Ningxia.
近年灰飞虱的大发生是种群内外多种因素共同作用的结果。
The interaction of these factors led to the population outbreak.
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 results suggest that E. crusgalli is the most suitable host plant of SBPH, followed by japonica rice varieties and then wheat.
研究结果为田间灰飞虱的准确抽样调查和有效防治提供了科学依据。
These results provide a scientific basis for accurate sampling and effective management of this pest.
灰飞虱是条纹叶枯病的传毒媒介，控制一、二代灰飞虱是防治该病的关键。
Small brown planthoppers were a vector of rice stripe disease and controlling the first and second-generation small brown planthoppers was a key of controlling rice stripe disease.
本研究结果对深入研究杀虫剂对灰飞虱种群的亚致死效应具有重要的参考价值。
The findings have scientific value for ascertaining sublethal effects of insecticides on the population of L. striatellus.
玉米粗缩病毒和水稻黑条矮缩病毒均可由灰飞虱传播并侵染玉米使其发生粗缩病。
Maize rough dwarf virus(MRDV)and rice black-streaked dwarf virus(RBSDV)which transmitted by Laodelphex striatellus Fallen are reported as the pathogens of maize rough dwarf disease(MRDD).
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。
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.
前茬作物、播种方式、耕作制度和气候条件等都通过影响玉米的播期或灰飞虱的发生数量来间接影响当地或当年病害发生的轻重。
The others such as previous crops, sowing way for maize, cropping system and the climate were indirect factors, which affected the sowing date or amount of planthopper.
前茬作物、播种方式、耕作制度和气候条件等都通过影响玉米的播期或灰飞虱的发生数量来间接影响当地或当年病害发生的轻重。
The others such as previous crops, sowing way for maize, cropping system and the climate were indirect factors, which affected the sowing date or amount of planthopper.
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