除草剂

Protoporphyrinogen oxidase inhibiting herbicide is becoming a hot point of novel herbicide development because it inhibits the enzyme catalysing the synthesis of chlorophyl in plant cell, insures the different activity between plants and animals, and has the virtues of high effectivity, low toxicity and mezzo residue.

而原卟啉原氧化酶抑制剂类除草剂以植物细胞中催化叶绿素合成的酶为作用点，确保了动植物之间的选择毒性，具有高效、低毒、残效适中的特点，成为新型除草剂开发的热点。

Also, the "MeiTai" pumpkin showed a little bit higher tolerance to pendimethalin than "NO1 pumpkin" cultivar.3 The differences in Inhibition rate on different cucurbits between two herbicidesResults showed that inhibition increased with rate of application of herbicides increase. There was little injury of pendimethalin at 5 ppm on "white beauty "muskmelon,"green farmNo9" watermelon,"Jinghu No2"squash and "MeiTai" pumpkin.

不同除草剂对不同瓜类抑制率的差异在除草剂用量5ppm～10ppm之间，随着浓度的增加，抑制有明显增强的趋势。5ppm施田补对&白美人&甜瓜、&绿农九号&西瓜、&京葫二号&西葫芦及&美泰赤粟&南瓜安全。10ppm对&绿农九号&也很安全，对&京葫二号&相对安全，对其它瓜类安全性不高。5ppm及10ppm的乙草胺对&绿农九号&西瓜安全，对&南瓜一号&相对安全。

This study analyzed the genetic diversity of green foxtail, yellow foxtailand foxtail millet disturbed in the North of china using twelve allozyme (21 loci),such as AATS ADHS AMPS DIAS GDH.. IDHS MDHS ME~ PGD, PGI5 PGMS SKD. The test of gene flow between cultivated population of foxtail millet and its wild relative, green foxtail, was carried out in the field, using a dominant sethoxydim resistant line as a pollen donor and a population of green foxtail as a recipient.

本研究以我国北方近缘种青狗尾草为材料通过对12种等位酶（AAT、ADH、AMP、DIA、GDH、IDH、MDH、ME、PGD、PGI、PGM、SKD）共21个位点的分析研究它们的遗传多样性；以显性抗除草剂谷子种质作为花粉供体材料，以不抗除草剂青狗尾草作为花粉受体材料进行了栽培种向其主要近缘野生种基因漂移的检测研究。

Agriculture maize as Indicator plant, by raising it in soil with acetochlor, to study the herbicide antidote N-dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane on protect maize residual damage from acetochlor.the result of experiment is: the growths of maize is lower than comparison value.

以垦玉6号玉米为指示材料，采用土培法研究了除草剂解毒剂N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷减轻除草剂乙草胺对玉米产生的残留药害。实验结果表明：在施用不同浓度的乙草胺土壤中，玉米植株的各项生长指标均低于空白对照值。

The herbicide antidote N-dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane was tested on protecting maize residual damage from chlorimuron by 6 agriculture maize as indicator plant in water with chlorimuron.

以垦玉6号玉米为指示材料，采用水培法研究了除草剂解毒剂N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷减轻除草剂氯嘧磺隆对玉米产生的残留药害。

In order to find screening rules suitable for lead compounds of pesticide,five descriptors:logarithm of partition coefficient of octanol/water,relative molar weight,number of hydrogen-bond donors,number of hydrogen-bond acceptors,polar surface areaand carcinogenic and mutagenic toxicities of 242 fungicides,512 herbicides and 399 insecticides were calculated and analyzed.

为了寻找适合于农药的先导筛选规则，对242个杀菌剂、512个除草剂和399个杀虫剂的5个描述符：疏水常数、相对分子质量、氢键给体数、氢键受体数、分子极性表面积和毒性进行了计算和分析，提出了杀菌剂、除草剂和杀虫剂先导化合物的筛选规则。

The toxicity of the herbicide simazine to the survival and gonadal development of amphibian Xenopus laevis were determined and compared with the effects of atrazine. X. laevis were exposed to simazine or atrazine in water from Nieuwkoop and Faber stage 46/47 to one month postmetamorphosis. Followed by another two months without exposure, the gonads of frogs were examined in gross morphology and histology.

为了研究三嗪类除草剂西玛津对两栖动物非洲爪蟾生存和性腺发育的毒性作用，并且与另一种三嗪类除草剂阿特拉津的毒性进行比较，将非洲爪蟾从46/47阶段开始暴露西玛津和阿特拉津到变态1个月后停止，再饲养2个月后将其解剖，取性腺做形态学和组织学观察。

The experiment used Four kinds of farmland common herbicides (Fenoxaprop、Clethodim、Glyphosate、Fenoxaprop-p-ethl),MDA content、Leaf cell menbrane permeability、Chlorophyll content were tested under three treaments of different medicaments and combined with the growth index.The results showed:(1) When they were used in normal concentration,growth and the others physiological indexes had obviously different under four kinds of herbicides treatments.According to effects of four herbicides on Zanthoxylum bungeanum Maxim ,the effect of Glyphosate randed first,the rest ones were Clethodim、Fenoxaprop-p-ethl and Fenoxaprop.

以农田中常用的6.9%骠马水乳剂、24%收乐通乳油、88.8%飞达红水溶性粒剂、6.9%威霸水乳剂等四种除草剂为供试对象，通过对各药剂的三种浓度处理下花椒叶片中丙二醛含量、叶片中叶绿素含量、叶片中细胞膜通透性的测定，再结合生长量指标进行分析研究，结果表明：(1)在常用浓度下，四种除草剂对花椒生长量及各生理指标的影响有很大差异，飞达红影响最大，依次为收乐通、威霸、骠马。

In the fangshan nursery of zhonglin company, Beijing ,on the basis of poplar tree vessel seedling 's weeding experiment with 11 weed killers in the greenhouse , the effects of 12 weed killers on seven broad-leaf tree seedlings were separately carried on by the way of soil treatment and leaf treatmen in the field . The research results indicated that 24% oxyfluorfen EC treated soil surface with quantity of 40-80ml each 667m2,the weeding effect can reache above 95%; 10% imazaquin AS with quantity of 15-25 ml each 667m2, and 30% benazolin-ethyl EC with quantity of 56-76 ml each 667 m2 were sprayed on the weeds or leaves of the seedlings, the weeding effects can reach above 81% and 85% respectively, but safe to nursery stock growth .

在北京中林公司房山苗圃基地，用11种除草剂配方在塑料大棚杨树容器苗试验的基础上，对大田七个阔叶树种苗圃用12种除草剂配方分别进行土壤处理和茎叶处理，结果表明，用24%惠尔乳油，每667m2用商品量40-80ml作土壤处理，除草效果达95%以上；用10%咪唑喹啉酸水剂和30%草除灵乳油每667m2用商品量分别为15-25ml和56-76ml作茎叶处理，除草效果分别达81%和85%以上，对苗木生长安全。

OTTAWA, Dec 3 - The widely used weed killer atrazine affects the sexual development of frogs, raising questions about the effects of its use in the environment, the University of Ottawa said on Thursday.

渥太华，12，3，路透社-渥太华大学在周四提出：广泛使用的除草剂阿特拉津会影响青蛙的性发育，引起关于这种除草剂的使用对环境的影响的问题的出现。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了