Some Suggestions for the pest forecast and control were also brought forward based on the characteristics of the pest population dynamics and distribution in the direct seeded rice field.
根据直播稻区稻水象甲种群动态和分布特点，提出了相应的虫情调查和测报防治建议。
The virulence characteristics of brown planthopper, Nilaparvata lugens Stal, from paddy field population and greenhouse population collected in late rice field last year was compared.
比较研究了当年采自田间的褐飞虱种群与上一年虫源在室内越冬繁殖种群对不同抗虫品种的致害性差异。
The virulence characteristics of brown planthopper, Nilaparvata lugens Stal, from paddy field population and greenhouse population collected in late rice field last year was compared.
比较研究了当年采自田间的褐飞虱种群与上一年虫源在室内越冬繁殖种群对不同抗虫品种的致害性差异。
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