除草剂

This article reviewed the currently commercialized herbicidal inhibitors of amino acid biosynthesis,functional mechanism and the advance in transgenic herbicide-tolerant plants.

本文综述了常用的耐氨基酸生物合成抑制剂类除草剂、作用机理及耐除草剂转基因植物的研究进展。

Taking the method of the indoor bioassay to study the herbicide antidote dichloro-N-acetyl-2-methyl-1-oxa-4-aza-Lo\nonane to reduce herbicide acetochlor on the stubble after the rice crop residues injury.

采用室内生物活性测定的方法，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后茬作物水稻的残留药害。

The method of degradation of 2,4-dichlorophenoxyacetic acid by ozonation in a cylindrical bubbling tower reactor was proposed.

引言2，4-二氯苯氧乙酸(2，4-D，又名2，4-滴)是一种广泛使用的除草剂[1]，应用历史较长，是我国主要的除草剂品种之一，用量也比较大。

We explore the relation between structure and activity , structure and toxicity from electronic structure and three—dimensional conformation in order to provide theoretical foundations for predicting the activity and toxicity of these chemical compounds, researching into mechanism of action and choosing safener.

通过比较四种均三氮苯类除草剂的红外光谱特征吸收的实验值和计算值，并运用规范不变原子轨道法GIAO法在RHF/6-31G水平上计算出西玛津的δ~1H-NMR和δ~(13)C-NMR，与实验值的对比统计分析，结果表明：用RHF/6-31G优化的分子构型最佳，AM1法次之，考虑到优化时间和研究的需要，我们在研究均三氮苯类除草剂分子的结构与活性关系时，为了进行深入、精确的理论研究，采用从头算RHF/6-31G进行优化；而对于此类化合物的结构与毒性的关系研究时，更注重分子的量子化学参数的相对值而非绝对值，因而采用AM1的方法。

The control rate of Sagittaria pygmaea Miq. was better when compared the mixture application of sulfonylurea herbicide of londax plus urea with londax applied alone.

除草剂和尿素混用的杀草增效作用：磺酰脲类除草剂农得时+尿素混用对矮慈姑的鲜重抑制率显著高于农得时单用。

With the new herbicide-oryzalin to treat the callus with young buds of coloured Zantedeschia aethiopica in vitro, the effects of oryzalin of different concentration and time duration on doubling chromosome of coloured Z. aethiopica were studied.

用新型除草剂Oryzalin作为彩色马蹄莲体细胞染色体加倍的诱导剂，以愈伤组织芽点为处理材料，研究了不同处理浓度和处理时间的除草剂对彩色马蹄莲染色体加倍的影响。

The inheritance of bar gene was studied by the tracking investigation of the herbicide resistance of generations crossed or backcrossed with bar transgenic rice.

通过回交将抗Basta除草剂的bar基因转育到其它品种，是获得新的抗除草剂转基因材料的一种简便有效的方法。

Then by the tracking investigation of the herbicide resistance of generations crossed or backcrossed with Bar gene transgenic wheat and the wheat hybrid descents heredity performance were studied. The result indicated that: 1 Development of regeneration systemsWheat genotypes and medium are the key factores influencing the development of regeneration systems for immature embryo cultivation.

此外通过回交将抗Basta除草剂的Bar基因转育到这些小麦品种，通过对转Bar基因小麦人工杂交与回交后代除草剂抗性的连续跟踪鉴定，研究了Bar基因在小麦杂种后代的遗传表现。

For instance, those who grow herbicide-tolerant soybeans typically avoid the most noxious weed killer, turning instead to glyphosate herbicides, which are less toxic and degrade more quickly.

例如，农人要是种植了耐除草剂的大豆，就会避免使用最毒的杀草剂，而改用毒性弱、分解快的苷磷除草剂。

The effect and selectivity of ten kind of herbicide were studied in laboratory bioassay and field experiment.

试验通过使它隆、快灭灵和双酯灵等10种除草剂对该物种的毒力和选择性测定分析，研究了土大黄不同生育期对除草剂的敏感性和应用后不同时期的中毒情况。

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