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- Dangerousness is taken into consideration when a pest species is selected for quarantine. 依据考虑对象的危险性大小筛选危险性种类。
- Gloydius intermedius mainly lived near streams around village and might become a pest species to ecotourism at local areas. 中国林蛙和中介蝮分别为两栖类和爬行类的优势种,但分布较集中。
- Crude extracts of Vitex negundo seeds were tested for insecticidal activity against five insect pest species andsafety to the multicolored ladybeetle (Harmonia axyridis). 研究了黄荆种子二氯甲烷提取物对5种害虫的杀虫活性以及对天敌异色瓢虫的安全性。
- The suffocating effects of 48% Chlorpyrifos to the two pest species are good, the death rates of R. dominica and C. minutus reached 100.0 percent at the density of 0.80ml/L. 48%25乐斯本乳油对两种储粮害虫的熏蒸效果较好;在0.;80ml/L浓度下;谷蠹、长角扁谷盗死亡率均达到100
- Kinnear MW,Bariana HS,1998.Polymorphic microsatellite markers for population analysis of a tephritid pest species,Bactrocera tryoni.Molecular Ecology,7:1 489-1 495. [康芬芬;李志红;2006.;利用微卫星标记初步分析桔小实蝇4个地理种群的遗传多态性
- Different pest species can arise with the shift from tillage-based agriculture to no-till, for instance.And the kinds of weeds and crop diseases can change. 例如,从整地农业转为不整地农业时,可能会出现不同的害虫,而杂草和植物病害的种类也会改变。
- Rattus norvegicus, R. flavipectus, Mus musculus, R. losea, Apodemus agrarius, R. nitidus and Microtus fortis are common pest species in the middle and lower reaches of the Yangtse River. 摘要长江中下游的地理位置和适宜的气候条件,决定了害鼠的种类丰富、繁殖力高。
- A suggestion of integrated pest management (IPM) of hop pests in this region is made on the basis of pests species and their control practice. 根据害虫种类和防治实践,阐述了该地区啤酒花害虫综合防治意见。
- The results of the investment of Populus pest species in Hunan were should that: there were many pest species of Populus,and the main pests were longhorn beetle and notodontids. 对湖南省杨树害虫的调查结果表明:害虫种类多,主要害虫是天牛类和舟蛾类。
- pest species of Populus euramevicana cv. I -214 意杨
- The ability of natural enemies to control the pests in Arboretum which is in suburb and better management level are the strongest and can cut down the pests species amount effectively. 捕食性天敌在时间上能有效跟随害虫并控制其危害。地处市郊、管护措施较好的植物园天敌昆虫对害虫的控制能力最强,能有效地减少害虫的种群数量。
- Do wolves belong to the canine species? 狼是犬科动物吗?
- An obtuse, boring, or bothersome person; a pest. 讨厌的人愚钝的、无聊的或讨厌的人; 害人精
- We should do our best to save endangered species. 我们应该竭尽全力挽救濒于灭绝的生物。
- This rare bird has become an endangered species. 这种珍禽已成为濒临灭绝的物种。
- He was wearing a strange species of hat. 他戴着一种奇怪的帽子。
- It won't be long before we can be rid of the pest altogether. 不要太久,我们就能把这种害虫消除干净。
- There are many species of chrysanthemum. 菊花品种很多。
- Today the survival of our species is threatened. 今天人类的生存受到了威胁。
- The giant panda has become an endangered species. 大熊猫已成了一种濒临灭绝的动物。