pyrethroid

简明释义

英[paɪˈriːθrɒɪd]美[paɪˈreθrɔɪd]

n. [有化] 拟除虫菊酯

英英释义

单词用法

同义词

反义词

例句

1.This article summarizes the difference of pyrethroid isomers in degradation and chiral stability from aspects as cis-trans isomers and optical isomers.

从顺反异构体、光学异构体两方面对拟除虫菊酯异构体的降解差异及稳定性差异进行了综述。

2.The present report deals with the synthesis of a series of pyrethroid-like oxime-ether compounds, their structure characteristic and the relation of structure-biologic activity.

本文报导一类具有拟除虫菊酯活性的肟醚类化合物的合成、结构特性及生物活性。

3.Possible metabolic mechanisms for pyrethroid resistance in this strain were discussed.

还讨论了烟粉虱对拟除虫菊酯抗性的代谢机理。

4.Dichlorochrysanthemate is the important intermediate of pyrethroid insecticides.

二氯菊酯是拟除虫菊酯杀虫剂的重要中间体。

5.To develop a pyrethroid intragastric administration death model.

建立家兔拟除虫菊酯类农药灌胃染毒致死模型。

6.Objective:To know the killing effect of pyrethroid preparation against cockroach;

目的：了解拟除虫菊酯类制剂杀灭蟑螂的效果；

7.It implies that the decreased nerve sensitivity is an important pyrethroid resistance mechanism of cotton bollworm.

这些结果说明神经敏感性降低是棉铃虫对拟除虫菊酯抗药性的重要机制。

8.This paper reports the regularity of pyrethroid-pollution of various vegetable and presents some control measures.

本文报道了拟除虫菊酯在蔬菜上的污染规律和控制措施。

9.The use of pyrethroid 除虫菊酯 has been linked to a decline in bee populations.

使用pyrethroid 除虫菊酯与蜜蜂数量的下降有关。

10.Before applying the pyrethroid 除虫菊酯, make sure to read the safety instructions carefully.

在使用pyrethroid 除虫菊酯之前，请确保仔细阅读安全说明。

11.The garden pest control spray contains a high concentration of pyrethroid 除虫菊酯 to effectively eliminate aphids.

这个花园害虫控制喷雾含有高浓度的pyrethroid 除虫菊酯，以有效消灭蚜虫。

12.Farmers often prefer pyrethroid 除虫菊酯 insecticides due to their low toxicity to mammals.

农民通常更喜欢使用pyrethroid 除虫菊酯杀虫剂，因为它们对哺乳动物的毒性较低。

13.Insect repellents often feature pyrethroid 除虫菊酯 as an active ingredient for its effectiveness against mosquitoes.

驱虫剂通常将pyrethroid 除虫菊酯作为有效抵御蚊子的活性成分。

作文

In recent years, the use of pesticides has become a hot topic, especially concerning their effects on the environment and human health. Among the various types of pesticides, pyrethroids are widely used due to their effectiveness in controlling pests. Pyrethroids (拟除虫菊酯) are synthetic chemicals modeled after pyrethrins, which are naturally occurring insecticides derived from chrysanthemum flowers. These compounds have gained popularity because they are less toxic to mammals and birds compared to other traditional insecticides. The mechanism of action for pyrethroids is fascinating. They work by targeting the nervous system of insects, causing paralysis and eventually death. This rapid action makes them particularly effective against a variety of pests, including mosquitoes, flies, and agricultural pests. As a result, pyrethroids are commonly found in household insect sprays, agricultural applications, and even in mosquito nets treated with these chemicals. One of the significant advantages of pyrethroids is their low toxicity to humans and animals when used correctly. This property has made them a preferred choice for pest control in homes, schools, and hospitals. However, it is crucial to follow the instructions on the label to minimize any potential risks. Misuse or over-application can lead to unintended consequences, such as harming beneficial insects or contaminating water sources. Despite their benefits, there are growing concerns regarding the environmental impact of pyrethroids. Studies have shown that these chemicals can persist in the environment and may accumulate in aquatic ecosystems, posing risks to fish and other wildlife. Additionally, there is evidence suggesting that over-reliance on pyrethroids can lead to the development of resistance in pest populations, making them less effective over time. This phenomenon highlights the need for integrated pest management strategies that combine various control methods to reduce reliance on a single type of pesticide. Moreover, the potential health effects of pyrethroids on humans are still being researched. While they are generally regarded as safe when used properly, some studies have indicated possible links to neurological issues and other health problems, particularly in children. Therefore, it is essential to handle products containing pyrethroids with care and to consider safer alternatives whenever possible. In conclusion, pyrethroids play a significant role in modern pest management due to their effectiveness and relatively low toxicity. However, it is vital to use them responsibly and be aware of their potential environmental and health impacts. Ongoing research and public awareness are crucial in ensuring that we can continue to benefit from pyrethroids while minimizing their risks. By adopting a balanced approach to pest control, we can protect our health, the environment, and the delicate ecosystems that support life on our planet.

近年来，农药的使用已成为一个热门话题，特别是关于它们对环境和人类健康的影响。在各种类型的农药中，拟除虫菊酯因其有效控制害虫而被广泛使用。拟除虫菊酯（pyrethroids）是合成化学物质，模仿从菊花中提取的天然杀虫剂——除虫菊素。这些化合物因其对哺乳动物和鸟类的毒性相对较低而受到欢迎。拟除虫菊酯的作用机制非常有趣。它们通过靶向昆虫的神经系统，使其瘫痪并最终死亡。这种快速作用使得它们对各种害虫尤其有效，包括蚊子、苍蝇和农业害虫。因此，拟除虫菊酯通常在家庭喷雾剂、农业应用甚至处理过这些化学物质的蚊帐中被发现。拟除虫菊酯的一个显著优点是，当正确使用时，它们对人类和动物的毒性较低。这一特性使它们成为家庭、学校和医院害虫控制的首选。然而，遵循标签上的说明以最小化任何潜在风险至关重要。误用或过量施用可能导致意想不到的后果，例如伤害有益昆虫或污染水源。尽管有其好处，但关于拟除虫菊酯对环境影响的担忧日益增加。研究表明，这些化学物质可能在环境中持续存在，并可能在水生生态系统中积累，对鱼类和其他野生动物构成风险。此外，有证据表明，过度依赖拟除虫菊酯可能导致害虫种群产生抗药性，从而使其随着时间的推移效果降低。这一现象突显了需要综合害虫管理策略，以结合各种控制方法，减少对单一类型农药的依赖。此外，关于拟除虫菊酯对人类潜在健康影响的研究仍在进行中。尽管在适当使用时通常被认为是安全的，但一些研究表明，可能与神经问题和其他健康问题有关，尤其是在儿童中。因此，处理含有拟除虫菊酯的产品时，务必小心，并尽可能考虑更安全的替代品。总之，拟除虫菊酯在现代害虫管理中发挥着重要作用，因其有效性和相对低毒性而受到重视。然而，负责任地使用它们并意识到其潜在的环境和健康影响至关重要。持续的研究和公众意识对于确保我们能够继续受益于拟除虫菊酯同时最小化其风险至关重要。通过采用平衡的害虫控制方法，我们可以保护我们的健康、环境以及支持地球上生命的脆弱生态系统。