greenfly

简明释义

英[ˈɡriːnflaɪ]美[ˈɡriːnflaɪ]

n. 蚜虫；牙虫的一种

复 数 g r e e n f l i e s 或 g r e e n f l y

英英释义

单词用法

同义词

反义词

例句

1.The roses have got greenfly.

这些玫瑰花上有蚜虫。

2.Greenfly can literally suck a plant dry.

蚜虫的确能把一株植物吸干。

3.The roses have got greenfly.

这些玫瑰花上有蚜虫。

4.To combat greenfly, she used a natural insecticide made from neem oil.

为了对抗蚜虫，她使用了一种由印度苦楝油制成的天然杀虫剂。

5.Ladybugs are known to feed on greenfly, helping to control their numbers.

瓢虫以蚜虫为食，有助于控制其数量。

6.The greenfly population increased rapidly during the warm summer months.

在温暖的夏季，蚜虫的数量迅速增加。

7.The gardener noticed that the rose bushes were infested with greenfly.

园丁注意到玫瑰灌木上感染了蚜虫。

8.She examined the leaves closely and found several greenfly on the underside.

她仔细检查了叶子，发现底面有几个蚜虫。

作文

In the world of gardening and agriculture, understanding pests is crucial for maintaining healthy plants. One such pest that gardeners often encounter is the greenfly, which is commonly known as aphids. These small, soft-bodied insects are typically green, but can also be found in shades of black, brown, or yellow. They are notorious for their ability to reproduce rapidly and can cause significant damage to a variety of plants by feeding on their sap. This feeding not only weakens the plant but can also lead to the spread of diseases, making the greenfly a serious threat to both ornamental and edible crops.The life cycle of the greenfly is fascinating and contributes to its status as a common pest. Female aphids can give birth to live young without mating, a process known as parthenogenesis. This means that under ideal conditions, a single female greenfly can produce hundreds of offspring in a matter of weeks. As they feed on plant sap, they excrete a sticky substance called honeydew, which can attract other pests and encourage the growth of sooty mold. This mold can cover leaves, blocking sunlight and further harming the plant's health.To combat the greenfly, gardeners have several options. One effective method is the introduction of natural predators, such as ladybugs or lacewings, which feed on aphids. Additionally, insecticidal soaps and neem oil can be used to manage greenfly populations without harming beneficial insects. Regular monitoring of plants is essential, as early detection can prevent larger infestations. By keeping an eye out for clusters of greenfly on new growth or the underside of leaves, gardeners can take swift action to protect their plants.Another important aspect of managing greenfly infestations is promoting plant health. Healthy plants are more resilient to pest attacks, so ensuring they receive adequate water, nutrients, and sunlight can make a significant difference. Crop rotation and companion planting can also help deter greenfly and other pests, as certain plants can repel aphids or attract beneficial insects.In conclusion, the greenfly is a common yet formidable pest in the gardening world. Understanding its biology, behavior, and impact on plants is essential for any gardener or farmer. By employing integrated pest management strategies and fostering a healthy garden ecosystem, it is possible to minimize the risks posed by greenfly while enjoying the beauty and bounty of thriving plants. Whether you are a novice gardener or a seasoned horticulturist, being vigilant about pests like the greenfly will ultimately lead to a more successful gardening experience.

在园艺和农业的世界中，了解害虫对于保持植物健康至关重要。其中一个园丁经常遇到的害虫是greenfly，通常被称为蚜虫。这些小型、柔软的昆虫通常是绿色的，但也可以是黑色、棕色或黄色。它们以迅速繁殖而闻名，能够对各种植物造成重大损害，因为它们以植物的汁液为食。这种取食不仅削弱了植物，还可能导致疾病的传播，使得greenfly成为观赏植物和可食用作物的严重威胁。greenfly的生命周期非常有趣，这也使它成为一种常见的害虫。雌性蚜虫可以在不交配的情况下生下活幼虫，这一过程称为孤雌生殖。这意味着在理想条件下，一只雌性greenfly可以在几周内产生数百个后代。当它们以植物汁液为食时，会排出一种粘稠的物质，称为蜜露，这可能吸引其他害虫并促进烟霉的生长。烟霉可以覆盖叶子，阻挡阳光，进一步损害植物的健康。为了对抗greenfly，园丁有几种选择。一种有效的方法是引入自然捕食者，如瓢虫或蕾丝虫，它们以蚜虫为食。此外，杀虫皂和苦楝油可以在不伤害有益昆虫的情况下，用于管理greenfly的数量。定期监测植物至关重要，因为早期发现可以防止更大的侵扰。通过关注新生长或叶子底部的greenfly聚集，园丁可以迅速采取行动来保护他们的植物。管理greenfly侵扰的另一个重要方面是促进植物健康。健康的植物对害虫攻击更具抵抗力，因此确保它们获得足够的水分、养分和阳光可以产生显著的差异。轮作和伴生种植也可以帮助驱赶greenfly和其他害虫，因为某些植物可以驱散蚜虫或吸引有益昆虫。总之，greenfly是园艺世界中一种常见而又强大的害虫。了解其生物学、行为及对植物的影响对任何园丁或农民来说都是必不可少的。通过采用综合害虫管理策略和培育健康的花园生态系统，可以尽量减少greenfly带来的风险，同时享受繁茂植物的美丽与丰收。无论你是初学园丁还是经验丰富的园艺师，警惕像greenfly这样的害虫最终会导致更成功的园艺体验。