合成杀虫剂

在有机农业中，禁止使用合成杀虫剂或肥料。

In organic farming , the use of synthetic pesticides or fertilizers is prohibited .

拟除虫菊酯类农药是根据天然除虫菊花中提取的杀虫组份经结构改造而发展起来的一类重要的合成杀虫剂。

Pyrethroid insecticides are developed from lead compounds that are the effective components extracted from natural pyrethrum flowers .

本文报导用环已烯经卤化反应、烷基化反应和Wittig反应合成天然杀虫剂β-水芹烯的方法。

The synthesis of natural insecticide β - phellandrene is reported by halogenation , alkylation and Wittig reaction from cyclohexene in this paper .

不使用人工合成的杀虫剂或化肥。

No synthetically produced pesticides or fertilizers are used .

前言：2，3-二氯-5-三氟甲基吡啶是合成农药杀虫剂定虫隆、除草剂吡氟氯禾灵和杀菌剂氟啶胺的关键中间体。

Abstrat : 2,3-Dichloro-5-trifluoromethylpridine is a key intermediate of synthesis pesticides of insecticide chlorfluazuron , herbicide haloxyfop and bactericide fluazinam .

随着农业现代化的进步，人工合成有机杀虫剂来防治病虫害已成为提高农作物产量的主要手段之一。

With the progress of agricultural modernization , the application of artificial synthesized pesticide in prevention and cure of plant diseases and insect pests have become an important approach to improve the yield of crops .

简要地阐述了利用催化剂DMAP合成有机磷杀虫剂喹硫磷的新工艺和方法特点。

A new technology of synthesizing organophosphorus insecticide quinalphos with DMAP as catalyst and its method characteristic are briefly described .

几丁质合成抑制剂类杀虫剂的发展和应用

Development and application of chitin synthesis-inhibiting insecticides

选择有机产品，确保没有使用合成肥料，杀虫剂或转基因技术。

Choose organic to ensure the product bans the use of synthetic fertilizers , pesticides , and genetic engineering .

异丙硫醇是低碳硫醇系列重要品种之一，是重要的化工原料和中间体，可以合成多种农药杀虫剂、杀菌剂，在合成农药领域占有重要地位。

Isopropyl mercaptan is an important chemical material or pharmaceutical intermediate as one of the most important products belonging to the series low-carbon mercaptans . It has a significant position in the field of pesticide synthesis and is widely applied to the preparation of a variety of pesticides , fungicides .

3-氟-4-硝基苯酚是重要的有机中间体，主要用于合成抗菌剂、杀虫剂、液晶材料等。

3-Fluoro-4-nitrophenol is an important intermediate for organic synthesis of antimicrobials , pesticides and LCD materials .

为尽量减轻对非目标生物的影响，本署选用对人类危害较少的合成除虫菊脂杀虫剂。

To minimise the detrimental effect to non-target living organisms , we choose synthetic pyrethroid insecticides which generate less hazards to human beings .