除草剂

The intermediate of flazasulfuron weedicide ,2-amino-4,6-dimethoxypyrimidineis conveniently obtained by treating 2-amino-4,6-dihydroxypyrimidinewith diazomethane at 20 °C for 24h.

本文利用硝酸胍和丙二酸二乙酯为起始原料，经环合及甲氧基化两步反应得到除草剂啶嘧磺隆的中间体：2-氨基-4，6-二甲氧基嘧啶。

In order to control the chomophyte in lawn and test the safety of herbicides on turfgrass,herbicidesGoal 23 5EC,Tiancaojing(Acetochlort Bensulfuron menthyl 18 2wp,Butachlor 50MG and Benziocarb 50ECwere applied with spraying or broadcasting on Dichondra repens,Zephyranthes candida and Ophiopogon japonicus turfgrass during the establishment of lawn.

为清除园林草坪杂草，寻求安全高效的园林草坪除草剂，在马蹄金、葱兰和麦冬草坪上用 2 3 5%果尔乳油、 1 8 2 %田草净可湿性粉剂、 50 %丁草胺颗粒剂和 50 %杀草丹乳油加水喷雾或拌土撒施，除草率为 75 45%～ 92 1 9%。

Dill weed .

n.1。除草剂

He attributed this to a dilution effect of the herbicide.

他把这归因于除草剂的稀释效应。

A method for simultaneous determination of residues of 9 diphenyl ether herbicides in cereals and oilseeds by GC-MS was presented.

利用气质联用技术建立了粮谷与油籽中9种二苯醚除草剂多残留同时检测的方法。

Candidate: Liu Zhenheng Major: Agricultural electrization and automatization Supervisor: Prof .Zhang Changli

杂草识别系统的研究对合理使用除草剂，增加农业的自动化水平，保护环境具有一定的现实意义。

The effect of the herbicide quizalofop-p-ethyl on the growth and EPA production was studied in this paper.

本文研究了除草剂精喹禾灵对硅藻的生长和产EPA的影响。

Note: Please correct choice and use of herbicides to the FDA on the basis of.

注意事项：请在正确选择和使用除草剂的基础上使用本品。

Is not a nip in the bud, make herbicide before weeds grows, may fireweed won't appear later in this ground, but won't grow good crop possibly also.

而不是防患于未然，在杂草长出来之前就打除草剂，可能这块地里以后就不会出现杂草了，但也可能不会长出好的庄稼。

You know,Flo,have you seen the new weed whackers we've got out front?

我不参与。你知道，弗洛，你看见新型除草剂了吗？

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。