Twelve derivates of S-tetrazine including three of 1,6-dihydro-S-tetrazines prepared recently were screened by pesticide activity.

对12个S四嗪衍生物,包括3个新合成的1,6二氢S四嗪衍生物,除草、杀菌、杀虫活性进行筛选。

A method for quantitative analysis of nitrofen in soils and water by RP-HPLC was introduced.

应用反相高效液相色谱检测水、土壤中除草醚的方法。

Life history traits of mictic females in two strains of Brachionus calyciflorus (Rotifera).

除草剂草甘膦对萼臂尾轮虫生活史特征的影响。

In this paper,the process of synthesizing new model weedicide oryzalin was studied.

本文对新型除草剂安磺灵的合成工艺进行研究。

She was on her knees weeding the garden.

她跪着在里除草。

Tomorrow I have to weed the garden.

我明天得除草。

Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine.

以3,6-二氯哒嗪为原料,合成6芳氧基哒嗪衍生物,研究它们的合成方法,并测定所得产物的除草活性。

Altenusin was reported as myosin light chain kinase inhibitor and sphingomyelinase inhibitor.TAN-420E has antitumor activity.

TAN-420E曾报道有抗肿瘤活性，易氧化为Herbimycin A，后者是很好的除草剂，并具有一定抗菌活性。

Sorption is one of the most important mechanisms deciding Dinoseb transport in soils.

吸附是决定除草剂地乐酚在土壤中迁移的重要机制之一。

The gardener estimated that it would take him four hours to weed the garden.

丁估计他除草需要四个小时。

Peasants are busy weeding under the scorching sun.

农民在炎炎烈日下忙着除草。

This herbicide degrades in moist soil.

这种除草剂在潮湿的土壤中分解。

It was significant to separate and enrich herbicide picloram from environment sample by molecular imprinting technique.

这对分子印迹技术用于环境样品中除草剂青莠定的分离和富集具有重要意义。

Some experiments were did on herbicide activity, and had found that activities of some compounds was good,especially 3,6-bis-benzyl-s-tetrazine.

对其中部分化合物进行生物活性实验,发现有些化合物显示较好的活性,同时发现烷基取代基的引入可以提高除草活性。

He forked the weeds out.

他用耙子除草。

He is busy weeding.

他正忙于除草。

In this paper,the contents of herbicide bifenox weredeterminated by the differential UV spectrophotometry at 280nm,and the reference solution was that the 40.

本文采用差示紫外分光光度法，以40．0微克／毫升的甲羧除草醚己烷液为参比溶液，在波长280纳米处测定其含量。

The sythesis of Monuron herbicide by oxidative-reductive carbonylation of dimethyamine and p-ClC6H4NO2 using selenium as catalyst and organic base as cocatalyst was studied.

研究以硒为催化剂,有机胺为助催化剂,对氯硝基苯和二甲胺为反应底物,经高选择性氧化还原羰基化一步合成灭草隆除草剂。

As steric hindrance of the aryl amine decreased and nucleophilicity increased, occurrence of the transfor-mation reaction increased and herbicidal activity of the product decreased.

芳胺空间位阻越小,亲核性越强,副反应越容易发生,产物除草活性越低。

Several non-infectious diseases including the leaf red spot, gummosis, herbicide in jury, typhoon damage and genetic albinism and an unidentified leaf crinkle disease are also described.

此外非病原性病害包括红斑病、流胶病、除草剂药害、风害及遗传性白化症等，以及病因不明之尾叶桉皱叶病亦在文内叙述之。