planthopper 中文意思是什麼
planthopper
解釋
蠟蟬-
Discussions on the experimental technique on biotype of the brown planthopper nilapavata lugens
褐飛虱生物型研究中幾個問題的商榷 -
Abstract : the results of field experiment of comparison and demonstration in a large area showed that treating seed with imidacloprid and applying it in the late seedling stage and the early field stage can control small brown - back rice planthopper better, and prevent the epidemic of rice black - streaked dwarf virus disease effectively
文摘:通過田間對比試驗和大面積示範應用證明，播種時以吡蟲啉拌種，秧田後期、本田前期噴施康福多、撲虱靈，可以較好地控制灰飛虱，從而有效地控制黑條矮縮病的流行。 -
Female courtship signal of the brown planthopper was made of many continuous regular pulses and male ' s signal was made of similar syllabics and had two types with different time domain characteristics. second male vibrational signal differed from male courtship signal with wide spectrum range and regular syllabics frequency. time domain characteristics of signals in different individuals even the same individual were different
頻域特徵分析知，褐飛虱雌蟲求偶嗚聲信號的頻域特性較穩定，個體內比個體間差異小；雄蟲求偶嗚聲信號s 、 e片段頻譜范圍較寬，但主振頻率比較接近，差異不顯著； m片段頻帶較窄，主振頻率mvf略小於s 、 e片段，變異較小； m片段脈沖重復頻率prf為幻 -
Spatial interactions between brown planthopper and white back planthopper in the rice fields
褐飛虱與白背飛虱自然種群空間關系 -
A method for monitoring of imidacloprid resistance in brown planthopper, nilaparvata lugens
褐飛虱對吡蟲啉抗性監測方法的研究 -
The brown planthopper, nilaparvata lugens ( st ? l ) is an important agricultural insect pest showing resistance to many different insecticides
摘要褐飛虱是一種重要的農業害蟲，其對許多殺蟲劑都產生了抗藥性。 -
The occurring stage of rice planthopper in the paddy with or without cultural crab was similar
養蟹田和非養蟹田稻飛虱的發生期基本一致。 -
Synthesized signals with different pulse repetition frequencies ( prf ) and main vibration frequencies ( mvf ) were presented to the brown planthopper. the results showed that prf was a sensitive and important signal characteristic in mating choice. the prf and mvf sensitive ranges of male signals were 70 ~ 90hz, 200 ~ 1700hz separately, and of female signals were about 22hz, 100 ~ 300hz separately
雄蟲敏感的prf范圍在22hz左右，雌蟲敏感的paf范圍為70 90hz ，這與實際的雌、雄蟲求偶鳴聲的pm變化范圍是一致的；雌、雄蟲能對mvf變化范圍較大的信號敏感，雄蟲敏感的mvf范圍為100 300hz ，與雌蟲求偶嗚聲的mvf變化范圍是一致的，而雌蟲敏感的mvf范圍為200 1700hz ，要比實際的雄蟲求偶鳴聲的mvf變化范圍大的多。 -
The occurrence rules of rice planthopper in rice field with cultural crab was ascertained through systemic investigation and field census
通過系統調查和大田普查相結合的方法，研究明確了養蟹稻田稻飛虱的發生規律。 -
The relationship of the distribution of rice planthopper and the distance of crab breeding line in the paddies with cultural crab was markedly positive
養蟹田稻飛虱的分佈與距養殖溝的距離呈顯著的正相關。 -
Owing to the controlling of crab to the rice planthopper, the number of rice planthopper was obviously less than that of the control paddies without used pestcide, and in general years, the rice planthopper can be controlled by cultural crab and without appling pestcide
由於螃蟹對稻飛虱的控製作用，養蟹稻田稻飛虱的發生量比不施藥對照田明顯偏低，一般發生年份，不用藥防治，即可控制稻飛虱的為害。
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