ragwort

简明释义

英[ˈræɡwɜːt]美[ˈræɡwɜːrt]

n. 刘寄奴属植物；美狗舌草；千里光草

英英释义

单词用法

同义词

反义词

例句

1.In 2006, the golden ragwort first bloomed on May 26, Dr. Primack observed; this year it flowered three days earlier.

据普利马克的观察，金色的刘寄奴在2006年开花于五月26日；今年比它早了三天。

2.In 2006, the golden ragwort first bloomed on May 26, Dr. Primack observed; this year it flowered three days earlier.

据普利马克的观察，金色的刘寄奴在2006年开花于五月26日；今年比它早了三天。

3.American ragwort with yellow flowers.

美洲产的开黄花的千里光。

4.There is a suggestion that ragwort honey might not be safe for humans, but there is no indication that this made the timing of the proliferation particularly unfortunate.

有一种说法是，泽菊蜜可能对人体不安全，但目前没有迹象表明，这使得繁殖的时机把握得特别不幸。

5.The severity of the impact was increased because cattle, which were displacing sheep, are much more sensitive than sheep to the toxins contained in ragwort.

由于正在取代绵羊的牛对千里光草中含有的毒素比绵羊敏感得多，影响的严重程度有所增加。

6.Ragwort was accidentally introduced to New Zealand in the late nineteenth century and, like so many invading foreign species, quickly became a pest.

19世纪末，狗舌草被偶然引入新西兰，像许多入侵的外来物种一样，它很快就变成了一种有害生物。

7.Ragwort contains a battery of toxic and resilient alkaloids: even honey made from its flowers contains the poison in dilute form.

狗舌草含有大量有毒且适应力强的生物碱：即使是用它的花制成的蜂蜜也含有稀释后的毒素。

8.The farmer noticed that the field was infested with ragwort.

农民注意到田地里布满了牛膝草。

9.Cattle can become seriously ill if they eat too much ragwort.

如果牛吃了太多的牛膝草，可能会严重生病。

10.Many gardeners try to eliminate ragwort from their gardens due to its toxicity.

许多园丁试图从他们的花园中消除牛膝草，因为它具有毒性。

11.The bright yellow flowers of ragwort can be quite attractive, but they are harmful.

虽然牛膝草的鲜黄色花朵非常吸引人，但它们是有害的。

12.In some regions, ragwort is considered an invasive species.

在某些地区，牛膝草被视为一种入侵物种。

作文

In the vast tapestry of nature, every plant has its role, and one such plant that often goes unnoticed is the ragwort. This perennial herb, known scientifically as Senecio, can be found in many parts of the world, particularly in Europe and North America. While it may seem like just another weed to the untrained eye, ragwort holds significant ecological importance as well as some controversial characteristics that make it a subject of discussion among botanists and environmentalists alike. Firstly, it is essential to understand what ragwort is. This plant typically grows in fields, roadsides, and disturbed areas, thriving in poor soil conditions where other plants may struggle. The bright yellow flowers of ragwort bloom in clusters during the summer months, creating a vibrant display that attracts various pollinators, including bees and butterflies. This characteristic makes ragwort an important component of local ecosystems, contributing to biodiversity and providing food for pollinators. However, despite these ecological benefits, ragwort has earned a notorious reputation due to its toxicity. The plant contains alkaloids that can be harmful to livestock if ingested. Animals such as horses and cattle are particularly susceptible to the toxic effects of ragwort, which can lead to severe liver damage and even death. This has led to strict regulations regarding the management of ragwort in agricultural settings, as farmers must ensure that their animals do not graze in areas where this plant is prevalent. The duality of ragwort—being both beneficial and harmful—highlights the complexities of nature. While it plays a role in supporting wildlife, it also poses risks to domesticated animals. This paradox is a reminder of the delicate balance that exists within ecosystems. It prompts us to consider how we manage our landscapes and the plants within them. Eradicating ragwort entirely could have unintended consequences on the local environment, potentially harming the very species that benefit from its presence. In recent years, there has been a growing movement towards understanding and managing ragwort more sustainably. Instead of complete eradication, some farmers and land managers are exploring integrated approaches that allow for the coexistence of ragwort with other flora. This might include controlled grazing practices, where livestock are rotated through pastures to minimize their exposure to ragwort while still allowing pollinators access to its nectar. Moreover, public awareness campaigns are being launched to educate people about ragwort and its role in the ecosystem. By fostering a better understanding of this plant, communities can work together to find solutions that protect both livestock and the environment. This collaborative approach is crucial in addressing the challenges posed by ragwort while preserving its ecological contributions. In conclusion, ragwort is a fascinating plant that embodies the complexities of nature. Its bright yellow flowers may attract admiration, but its toxic properties cannot be overlooked. As we navigate the challenges of modern agriculture and environmental conservation, it is vital to recognize the importance of ragwort and strive for a balanced approach that respects both the needs of livestock and the health of our ecosystems. Through education and sustainable management practices, we can learn to appreciate ragwort not just as a weed, but as a valuable part of our natural world.

在大自然的广阔画卷中，每种植物都有其角色，而一种常常被忽视的植物就是ragwort。这种多年生草本植物，学名为Senecio，广泛分布于世界许多地方，尤其是在欧洲和北美。虽然对于未受过训练的眼睛来说，它可能看起来只是另一种杂草，但ragwort却具有重要的生态意义以及一些争议特征，使其成为植物学家和环保主义者讨论的话题。 首先，了解ragwort是什么是至关重要的。这种植物通常生长在田野、路边和被破坏的区域，能够在其他植物可能挣扎的贫瘠土壤条件下茁壮成长。ragwort的明亮黄色花朵在夏季成簇绽放，形成一个吸引各种授粉者（包括蜜蜂和蝴蝶）的生动展示。这一特性使得ragwort成为当地生态系统的重要组成部分，促进了生物多样性，并为授粉者提供了食物。 然而，尽管有这些生态益处，ragwort因其毒性而获得了臭名昭著的声誉。这种植物含有可能对牲畜造成伤害的生物碱。如果被吞食，马和牛等动物特别容易受到ragwort的毒性影响，这可能导致严重的肝损伤甚至死亡。这导致了对农业环境中ragwort管理的严格规定，因为农民必须确保他们的动物不在这种植物盛行的地区放牧。 ragwort的双重性——既有益又有害——突显了自然界的复杂性。虽然它在支持野生动物方面发挥着作用，但它也对驯化动物构成了风险。这一悖论提醒我们生态系统中存在的微妙平衡。它促使我们思考如何管理我们的景观及其中的植物。完全根除ragwort可能会对当地环境产生意想不到的后果，可能会伤害到那些从其存在中受益的物种。 近年来，越来越多的人开始朝着更可持续地理解和管理ragwort的方向努力。与其完全根除，一些农民和土地管理者正在探索允许ragwort与其他植物共存的综合方法。这可能包括控制放牧实践，即轮换牲畜在牧场中，以最小化它们接触ragwort的机会，同时仍然允许授粉者获取其花蜜。 此外，公众意识运动正在展开，以教育人们关于ragwort及其在生态系统中的作用。通过促进对这种植物的更好理解，社区可以共同努力找到保护牲畜和环境的解决方案。这种协作方法对解决ragwort带来的挑战，同时保护其生态贡献至关重要。 总之，ragwort是一种迷人的植物，体现了自然的复杂性。它明亮的黄色花朵可能吸引赞赏，但其毒性特征不可忽视。当我们应对现代农业和环境保护的挑战时，认识到ragwort的重要性并努力寻求尊重牲畜需求和生态健康的平衡方法至关重要。通过教育和可持续管理实践，我们可以学会欣赏ragwort，不仅仅作为一种杂草，而是作为我们自然世界中宝贵的一部分。