dieback

简明释义

英[ˈdaɪbæk]美[ˈdaɪbæk]

n. [植保] 顶梢枯死

英英释义

单词用法

同义词

反义词

例句

1.A new disease named legume dieback of Cassia tora was first found in Taian of Shandong Province during 2006—2007.

2007年在山东农业大学中药材试验站栽培的药用植物草决明上发现一种新病害，定名为草决明荚枯病。

2.The second was an unusual seasonal dieback in the seaweeds, and the third was the presence of a highly competitive coral species, which was able to outgrow the seaweed.

第二是海藻非正常的季节性死亡，第三是出现了一种更有竞争力的珊瑚，比海藻长得快。

3.Projections of Amazon dieback are still much debated, but should countries like Argentina, dependent on the forest for their rainfall, really take the chance?

亚马逊热带雨林盯梢枯死的推测依然争论激烈，但是，像阿根廷这样依赖森林提供降雨的国家真的该抓住这个机遇吗？

4.There are many concerns. One of them is that avoided deforestation may not be permanent—especially where there is a risk of climate-induced forest dieback.

目前还存在着重重顾虑，其中之一是被避免的毁林活动或许并不能一劳永逸，特别是在那些存在由气候导致的森林梢枯病风险的地区，情况更是如此。

5.The second was an unusual seasonal dieback in the seaweeds, and the third was the presence of a highly competitive coral species, which was able to outgrow the seaweed.

第二是海藻非正常的季节性死亡，第三是出现了一种更有竞争力的珊瑚，比海藻长得快。

6.It will also be offset by an increase in forest dieback elsewhere, caused by rising aridity, drought, pests and fires-all symptoms of global warming.

而且其他地区由于全球变暖导致的干旱、虫害和火灾造成的森林退化也令人担忧。

7.The encouraging news comes from the discovery of a link between reduced susceptibility to ash dieback and lower levels of plant chemicals called iridoid glycosides.

这一令人鼓舞的消息源于这样一个发现：较低的白蜡树枯梢病易感性与较低水平的植物化学物质“环烯醚萜苷类”(iridoid glycosides)之间存在关联。

8.The loss of another 2%, according to a World Bank study last year, could start to trigger dieback in the forest’s relatively dry southern and south-eastern parts.

根据去年世界银行的研究，若再有2%消失，就会使相对干燥的南部和东南部地区的森林枯死。

9.Scientists are studying the causes of dieback in coral reefs.

科学家们正在研究珊瑚礁中枯死的原因。

10.Farmers are worried about dieback affecting their fruit trees this season.

农民们担心这个季节的枯死会影响他们的果树。

11.Proper irrigation can help prevent dieback in sensitive plant species.

适当的灌溉可以帮助防止敏感植物种类的枯死。

12.The report highlighted a significant increase in dieback among urban trees.

报告强调城市树木中枯死现象显著增加。

13.The sudden onset of dieback in the forest has raised concerns among environmentalists.

森林中突然出现的枯死现象引起了环保人士的担忧。

作文

The term dieback refers to a phenomenon often observed in trees and plants where the tips of branches or stems begin to die, leading to a gradual decline in the overall health of the organism. This process can be caused by various factors including environmental stress, disease, or pest infestations. Understanding dieback is crucial for anyone involved in gardening, forestry, or agriculture, as it can significantly impact plant health and productivity.In many cases, dieback is the result of a combination of stressors. For instance, a tree that is already weakened by drought may become more susceptible to fungal infections, which can exacerbate the dieback process. Similarly, changes in soil composition or quality can lead to nutrient deficiencies that contribute to the decline of plant health. Therefore, recognizing the early signs of dieback can help in taking preventive measures to protect the plants.One of the most common types of dieback is known as 'tip dieback,' where the ends of branches turn brown and die off. This is often seen in species such as oak and pine trees, and can be an indication of various underlying issues. For example, tip dieback can occur due to a lack of water, especially during dry spells, or it may be a sign of insect damage. In some cases, the presence of specific pathogens can also trigger this condition, leading to further deterioration if not addressed promptly.Managing dieback involves a multifaceted approach. First, it is essential to identify the cause of the problem. This might require a close inspection of the affected plants, looking for signs of pests or diseases, and assessing environmental conditions. Once the cause is determined, appropriate measures can be taken. This could involve improving irrigation practices, applying fungicides to control diseases, or even pruning away dead or dying branches to encourage new growth.Moreover, prevention is key when dealing with dieback. Maintaining healthy soil and ensuring that plants receive adequate nutrients can go a long way in preventing the onset of this condition. Regularly monitoring plants for signs of distress can also help catch any issues before they escalate into severe dieback. For instance, keeping an eye out for wilting leaves or unusual discoloration can alert gardeners to potential problems early on.In conclusion, dieback is a significant concern for anyone involved in plant care, as it can lead to the decline and eventual death of affected plants. By understanding the causes and symptoms of dieback, individuals can take proactive steps to manage and prevent this issue. Whether through improved care practices or timely interventions, addressing dieback effectively can help ensure the health and longevity of trees and plants, contributing to a more vibrant and resilient ecosystem.

术语dieback指的是一种现象，通常在树木和植物中观察到，其中枝条或茎的顶部开始死亡，导致生物体整体健康逐渐下降。这个过程可能由多种因素引起，包括环境压力、疾病或害虫侵扰。理解dieback对任何参与园艺、林业或农业的人来说都是至关重要的，因为它可以显著影响植物的健康和生产力。在许多情况下，dieback是多种压力源共同作用的结果。例如，已经因干旱而虚弱的树木可能会变得更容易受到真菌感染的影响，从而加剧dieback过程。同样，土壤成分或质量的变化也可能导致营养缺乏，从而促成植物健康的下降。因此，识别dieback的早期迹象可以帮助采取预防措施，以保护植物。最常见的dieback类型之一被称为“尖端枯萎”，其特点是枝条的末端变棕色并死亡。这通常在橡树和松树等物种中看到，可能是各种潜在问题的迹象。例如，尖端dieback可能由于缺水而发生，尤其是在干旱期间，或者可能是昆虫损伤的迹象。在某些情况下，特定病原体的存在也可能引发这种情况，如果不及时处理，将导致进一步恶化。管理dieback涉及多方面的方法。首先，识别问题的原因至关重要。这可能需要对受影响植物进行仔细检查，寻找害虫或疾病的迹象，并评估环境条件。一旦确定了原因，就可以采取适当的措施。这可能涉及改善灌溉实践，施用杀真菌剂以控制疾病，甚至修剪掉死去或快要死去的枝条，以促进新生长。此外，预防在处理dieback时至关重要。保持健康的土壤并确保植物获得足够的营养，可以在预防这种情况的发生方面发挥重要作用。定期监测植物的压力迹象也可以帮助在问题升级为严重dieback之前及早发现。例如，留意枯萎的叶子或异常的变色，可以及时提醒园丁潜在的问题。总之，dieback是任何参与植物护理的人面临的重要问题，因为它可能导致受影响植物的衰退和最终死亡。通过理解dieback的原因和症状，个人可以采取积极措施来管理和预防这一问题。无论是通过改善护理实践还是及时干预，有效应对dieback可以帮助确保树木和植物的健康和长寿，为更具活力和韧性的生态系统做出贡献。