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insect growth
相关语句
  昆虫生长
    The Safety of Several Insect Growth Regulators and Biological Agents on Beneficial Insects
    几种昆虫生长调节剂及生物制剂对有益昆虫的安全性测定
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    It is recently reported that field populations of Plutella xylostella, a cosmopolitan insect pest of crucifers, has shown resistance to more than 50 insecticides including organochlorines insecticides, organophosphorus insecticides, carbamate insecticides, pyrethroid insecticides, insect growth regulators and Bacillus thuringiensis.
    小菜蛾是一种世界性十字花科蔬菜害虫 ,已报道小菜蛾对 5 0多种杀虫剂产生抗药性 ,包括有机氯、有机磷、氨基甲酸酯、拟除虫菊酯类、昆虫生长调节剂及苏云金杆菌 (Bt)类等杀虫剂。
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  insect growth
Any microbial source of lipids was eliminated by applying antibiotics, and the latter did not affect the insect growth.
      
Two insect growth regulators, which are juvenile hormone (JH) analogues, I.
      
Potential use of insect growth regulators for controlling Adoxophyes orana: Laboratory and small-scale field studies
      
Three insect growth regulators (IGRs) were tested on the summer fruit tortrix moth Adoxophyes orana in laboratory and small-scale field experiments.
      
Action of a juvenile hormone analogue, altosid?, insect growth regulator, on the morphogenesis and adult eclosion of the fleshfl
      
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Laboratory and field trials were conducted to control Spodopterea exigua and Plutella xylostella with Bt biocides, antibiotic chemicals, insect growth regulators and chemical insecticides. Several kinds of insecticides were screened for controlling the two pests effectively. Synergistic action was also obtained through their rational mixing.

应用微生物农药、抗生素类农药、昆虫生长调节剂及化学农药对南方蔬菜的主要害虫——甜菜夜蛾和小菜蛾进行了室内外的防治试验.结果筛选出多种农药对2种害虫有较好的防治效果.此外,它们之间的合理混配还有增效作用

The diamondback moth (DBM), Plutella xylostella L, is one of the mostdestructive pest of crucifer crops in Guangdong Province, China. The resistance of field strains of DBM from Shenzhen (SZ) and Guangzhou (GZ) city of Guangdong Province to conventional mincrobial insecticides has been investigated. Results showed that the strains of SZ and GZ had resistance to synthetic pyrethroids,organophoshorus insecticides, carbamates as well as insect growth regulators, but onlythe strains of SZ showed resistance...

The diamondback moth (DBM), Plutella xylostella L, is one of the mostdestructive pest of crucifer crops in Guangdong Province, China. The resistance of field strains of DBM from Shenzhen (SZ) and Guangzhou (GZ) city of Guangdong Province to conventional mincrobial insecticides has been investigated. Results showed that the strains of SZ and GZ had resistance to synthetic pyrethroids,organophoshorus insecticides, carbamates as well as insect growth regulators, but onlythe strains of SZ showed resistance to microbial insecticide (B. thurhaensis)'Fenvalerate was greatly synergized with piperonyl butoxide (PB) or o,o -diethyl -ophenyl-thiophosphate (SVI). An addition of PB, SVI and TPP (triphenyl phosphate)to microbial insecticide BT resulted in no synergism, indicating that the resistant mechanism of DBM to BT does not include microsomal oxidation of MFO and esterases. Susceptible of DBM would obtain resistance to Dipel (B. thuringiensis var.Kurstaki) soon, when every generation was bred with Dipel under laboratory condition (23℃ ~ 30℃, L:D= 12:12). The LC50 of F0, F5, F12 and F18 were 30.33, 298.00,695.33 and 1077.33mg /L, respectively, the LC50 of F18 was 35.5-fold as that of F0.On the other hand, during the 20 generations of rearing without insecticide pressure,recovery of sensitivity to BT was detected, so was the recovery of sensitivity to chemical insecticides, hot the recovery of sensitivity to insect growth regulators (chlorfluazuron) and synthetic pyrethroids was very slow. Fortunately, no crossresistance was found between the chemical and microbial insecticide (BT) used.

广东省深圳、东莞、惠阳及博罗等供香港(以下简称供港)菜区小菜蛾对有机化学农药的抗性与广州内销菜区相近或稍高,对Bt杀虫剂的抗性则是供港菜区明显高于广州内销菜区。几种酶抑制剂TPP、SV1及Pb对Bt制剂无明显增效作用,可见小菜蛾对Bt制剂的抗性与酯酶和多功能氧化酶(MFO)的关系不大。用Bt制剂Dipel(大宝)连代选育小菜蛾敏感品系,选育18代,小菜蛾的抗性较选育前提高35倍。该抗性品系小菜蛾对个别菌株Bt及巴丹、杀虫双、速灭杀了、万灵、敌敌畏等无交互抗性,而对昆虫生长调节抑制剂有轻微交互抗性。相反,用巴丹和杀虫双选育出的小菜蛾抗性品系对Dipel仍表现敏感。抗性品系小菜蛾在无触毒条件下饲养,抗性会自然减退,但不同类杀虫剂的抗性减退速率不尽相同。

The resistance selection and patterns of cross resistance of diamondback moth (DBM), Plutella xylostella (L ), to chlorfluazuron, a benzoylphenylurea (BPU) insect growth regulator (IGR) that interferes with chitin synthesis, were investigated during 1995~1996 Laboratory selection of a Shenzhen strain (SZ S) of DBM, having been reared in laboratory for 6 years since its collection in 1990, by chlorfluazuron for 6 generations resulted in 23 78 fold resistance to chlorfluazuron, and quick reversion...

The resistance selection and patterns of cross resistance of diamondback moth (DBM), Plutella xylostella (L ), to chlorfluazuron, a benzoylphenylurea (BPU) insect growth regulator (IGR) that interferes with chitin synthesis, were investigated during 1995~1996 Laboratory selection of a Shenzhen strain (SZ S) of DBM, having been reared in laboratory for 6 years since its collection in 1990, by chlorfluazuron for 6 generations resulted in 23 78 fold resistance to chlorfluazuron, and quick reversion to susceptibility was observed when the culture was kept without exposure to the chemical pressure Cross resistance to conventional insecticides——cyhalothrin, cypermethrin, phoxim, quinalphos, methomyl, microbial insecticide Bt, abamectin and diafenthiuron was not apparent Negative cross resistance was demonstrated to two nereistoxin derivatives, cartap(0 21) and shachongdan(0 23) The results of in vivo tests showed that addition of PBO or TPP had no effect on the toxicity of chlorfluazuron in the SZ S strain, while PBO or TPP significantly increased the toxicity of chlorfluazuron in both SH R and CH R strains, with synergism ratios ranged from 15 42 to 29 71 fold and 2 74 to 2 87 fold based on comparison of LC 50 and PBO restored the effectiveness of chlorfluazuron completely, indicating that MFO is the major resistance mechanism

用昆虫生长调节剂(insectgrowthregulator,简称IGR)定虫隆(chlorfluazuron)对源自深圳田间的小菜蛾(SZS)Plutelaxylostela(L)在室内进行抗性种群选育,经过8代饲养和6次药剂汰选,获得抗性种群(CHR),与相对敏感种群SZS比较,抗性指数(RI)为2378倍。CHR种群在去除选择压力条件下饲养5代,抗性逐渐下降。抗性汰选前后分别测定了10种药剂的剂量死亡毒力回归线,发现CHR抗性种群对三氟氯氰菊酯、氯氰菊酯、辛硫磷、喹硫磷、灭多威、磺胺脲类衍生物杀螨隆、微生物杀虫剂Bt和齐墩螨素无明显交互抗性,抗性倍数为04~17;对两种沙蚕毒素类杀虫剂杀螟丹和杀虫丹的敏感性却有所上升,有负交互抗性趋势。活体增效剂试验表明,增效醚(PBO)和三苯基磷酸酯(TPP)对定虫隆均有一定的增效活性,PBO的增效比最高为29倍,能够完全抑制对定虫隆的抗性,说明多功能氧化酶可能是主导抗性机制之一。

 
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