systemic insecticide

简明释义

内吸杀虫剂

英英释义

例句

1.The label on the systemic insecticide warned users about potential harm to beneficial insects.

该系统性杀虫剂的标签警告用户可能对有益昆虫造成危害。

2.After applying the systemic insecticide, the gardener noticed a significant reduction in aphid populations.

施用系统性杀虫剂后，园丁注意到蚜虫数量显著减少。

3.Farmers often use systemic insecticide to protect their crops from pests.

农民常常使用系统性杀虫剂来保护他们的作物免受害虫侵害。

4.Using systemic insecticide can be more efficient than contact insecticides for certain pests.

对于某些害虫而言，使用系统性杀虫剂可能比接触性杀虫剂更有效。

5.The systemic insecticide penetrates the plant's tissues, making it effective against sucking insects.

这种系统性杀虫剂渗透植物组织，能有效对抗吸汁昆虫。

作文

In the modern world of agriculture, the use of chemicals to protect crops from pests has become a common practice. Among these chemicals, systemic insecticides are particularly noteworthy due to their unique mode of action and effectiveness. Unlike traditional insecticides that only target pests on the surface of plants, systemic insecticides are absorbed by the plant's vascular system, allowing them to provide protection from within. This means that even if insects feed on parts of the plant that are not directly treated, they can still be affected by the chemical, leading to a more comprehensive pest control solution.The concept of systemic insecticides involves the chemical being taken up by the roots or leaves of the plant and then transported throughout its tissues. This internal distribution ensures that all parts of the plant, including new growth, are protected against harmful insects. For farmers, this means less frequent applications and reduced labor costs, as they do not need to spray the entire field repeatedly. Additionally, systemic insecticides tend to have a longer residual effect compared to contact insecticides, providing ongoing protection against pests for an extended period.However, the use of systemic insecticides is not without controversy. Environmentalists often raise concerns about the potential impact of these chemicals on non-target species, including beneficial insects such as pollinators. The systemic nature of these insecticides means that they can inadvertently affect organisms that come into contact with the plant or consume its nectar and pollen. This has led to increased scrutiny and calls for more sustainable pest management practices that minimize harm to the ecosystem.Moreover, there is growing evidence that some systemic insecticides may contribute to the phenomenon known as 'pollinator decline.' The decline in populations of bees and other pollinators is alarming, as these creatures play a crucial role in food production and biodiversity. As a result, many countries are implementing stricter regulations on the use of certain systemic insecticides, urging farmers to adopt integrated pest management (IPM) strategies that combine biological control methods with chemical interventions.Despite the challenges associated with systemic insecticides, they remain an important tool in modern agriculture. When used responsibly, they can significantly improve crop yields and reduce the reliance on more harmful pesticides. Education and awareness about the proper application and potential risks of these chemicals are essential for ensuring that they are used in a way that protects both agricultural productivity and the environment. Farmers must be trained to recognize the signs of pest infestations and to apply systemic insecticides judiciously, considering factors such as timing, dosage, and environmental conditions.In conclusion, systemic insecticides represent a significant advancement in pest control technology, offering effective solutions for managing agricultural pests. However, their use must be balanced with environmental considerations to protect beneficial species and maintain ecological integrity. By fostering a deeper understanding of systemic insecticides and promoting responsible usage, we can work towards a sustainable agricultural future that benefits both farmers and the environment.

在现代农业中，使用化学物质保护作物免受害虫侵害已成为一种普遍做法。在这些化学物质中，系统性杀虫剂因其独特的作用机制和有效性而特别引人注目。与传统的只针对植物表面害虫的杀虫剂不同，系统性杀虫剂被植物的维管系统吸收，从内部提供保护。这意味着即使昆虫以植物未直接处理的部分为食，它们仍然可能受到化学物质的影响，从而导致更全面的害虫控制解决方案。系统性杀虫剂的概念涉及到化学物质被植物的根或叶子吸收，然后在其组织中运输。这种内部分布确保植物的所有部分，包括新生长，都能得到对有害昆虫的保护。对于农民来说，这意味着减少施药频率和降低劳动成本，因为他们不需要反复喷洒整个田地。此外，系统性杀虫剂通常比接触性杀虫剂具有更长的残留效应，能够在较长时间内提供持续的害虫保护。然而，使用系统性杀虫剂并非没有争议。环保人士常常对这些化学物质对非目标物种的潜在影响表示担忧，包括授粉者等有益昆虫。这些杀虫剂的系统性特征意味着它们可能意外影响与植物接触或摄取其花蜜和花粉的生物。这导致了对某些系统性杀虫剂使用的更严格监管，并呼吁采取更可持续的害虫管理实践，以最小化对生态系统的危害。此外，越来越多的证据表明，一些系统性杀虫剂可能会导致“授粉者衰退”现象。蜜蜂和其他授粉者种群的下降令人担忧，因为这些生物在食品生产和生物多样性中发挥着至关重要的作用。因此，许多国家正在对某些系统性杀虫剂的使用实施更严格的法规，敦促农民采用综合虫害管理（IPM）策略，将生物控制方法与化学干预结合起来。尽管与系统性杀虫剂相关的挑战，但它们仍然是现代农业中重要的工具。当负责任地使用时，它们可以显著提高作物产量，并减少对更有害农药的依赖。关于这些化学物质的正确应用及潜在风险的教育和意识至关重要，以确保它们以保护农业生产力和环境的方式使用。农民必须接受培训，以识别害虫侵害的迹象，并谨慎施用系统性杀虫剂，考虑施用时机、剂量和环境条件等因素。总之，系统性杀虫剂代表了害虫控制技术的重要进步，为管理农业害虫提供了有效的解决方案。然而，其使用必须与环境考虑相平衡，以保护有益物种并维持生态完整性。通过加深对系统性杀虫剂的理解并促进负责任的使用，我们可以朝着一个有利于农民和环境的可持续农业未来努力。