查询词典 insecticide

A nonpersistent chemical,C4H7O4PBr2Cl2,used for mosquito control and as an insecticide against crop pests.

二溴磷一种非永久性化学药品，C4H7O4PBr2Cl2，用来抑制蚊子并作为杀死农作物害虫的一种杀虫剂

This work is one of the most important bases of eliminating locusts. Studying the oogenesis of insects has important significance on demonstrating the reproductive mechanism and controlling locusts" fertility. At the same time, it"s an important means of studying the forecast of pests and the law of occurrence. It can reveal the law of ovipositing and explain the physiological basis of pests" occurrence, thus design "biorational insecticide.

研究昆虫的卵子发生对于阐明昆虫的生殖机理和控制繁殖具有重要的实践意义，是研究害虫预测预报和发生规律的一种重要手段，同时可以揭示昆虫大量产卵的规律，阐明害虫大发生的生理基础，从而设计出"生物合理的杀虫剂"，并为促进有益昆虫的大量繁殖提供理论依据。

For the first time, this study conducted a series of field sampling in multiple locations over several years and demonstrated that the B and Q biotypes first invade areas with high frequency of transport through human movement of plant materials, and then rapidly spread into surrounding areas and displace indigenous genotypes, and in parallel with displacement significant changes in sex ratio occurred in the mixed populations. Crossing experiments demonstrated that in the B. tabaci species complex there are many genetic groups that are completely or nearly completely isolated in reproduction. Apart from behavioural mechanisms, difference in host plant suitability and insecticide susceptibility between whitefly biotypes may also play important roles in the displacement of indigenous whiteflies by alien whiteflies in Zhejiang.

本研究首次以一个地理区域内广泛系统的野外调查数据证实，B型和Q型烟粉虱首先通过花卉苗木调运入侵交通较为发达的地区，然后迅速向周边扩张并取代土著烟粉虱，同时入侵取代过程伴随着混合种群中性比的变化；杂交试验证明烟粉虱复合种内存在多个生殖上隔离或基本隔离的遗传群；B型烟粉虱在浙江省内迅速取代土著烟粉虱，除行为机制外，生物型之间寄主适应性和药剂敏感性等方面的差异也可能在此过程中起着重要作用。

Chlorpyrifos was the replaceable insecticide of methomidophos and largely applied for controlling agricultural and pestiferous pests.

毒死蜱是甲胺磷等高毒杀虫剂的替代品种，被广泛应用于农业及卫生害虫防治中。

Spontaneous discharges of action potentials of neuromuscular preparations in the leg and fore- or mid-gut of the Colorado potato beetle, Leptinotarsa decemlineata were recorded in situ under the treatment of oral injection of Cry3A toxin and permethrin insecticide.

对Cry3A毒素和氯菊酯杀虫剂经口注射处理的马铃薯甲虫的前肠、中肠和腿节样本的神经肌肉自发动作电位发射进行了记录。

Spontaneous discharges of action potentials of neuromuscular preparations in the leg and fore-of mid-gut of the Colorado potato beetle, Leptinotarsa decemlineata were recorded in situ under the treatment of oral injection of Cry3A toxin and permethrin insecticide.

对Cry3A毒素和氯菊酯杀虫剂经口注射处理的马铃薯甲虫的前肠、中肠和腿节样本的神经肌肉自发动作电位发射进行了记录。

In addition,the rapid development of resistance to chemical insecticide by psocids has also been reported.In China,the commonly occurred psocid species are Liposcelis bostrychophila,L.entomophila,L.decolor,and L.paeta.

在我国发生为害最为严重的种类有嗜卷书虱Liposcelis bostrychophila、嗜虫书虱L.entomophila、无色书虱L.decolor以及小眼书虱L.paeta等。

The extract of pyrethrum could be used on the vegetable production for the substitute of synthetic insecticide.

结论］除虫菊提取物完全可以作为化学合成农药的替代品在蔬菜生产中使用。

There is a serious drug-resistant problem, resulted from a flood of usage of pyrethrum ester insecticide in long-term. In this paper, we analyzed the problem and put forward a project for trying solution it.

本文针对拟除虫菊酯类杀虫剂由于长期大量的使用而出现的严重抗药性问题进行了分析并提出一个试图解决该问题的方案。

And the compared efficacy test was executed between extract of pyrethrum and other several normal synthetic insecticide.

中提取天然除虫菊提取物，与常用的几种化学合成杀虫剂对比，进行药效试验。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。