bollworm

简明释义

英[/ˈbɔlˌwɜrm/]美[/ˈbɔlˌwɜrm/]

n. 一种蛾的幼虫；螟蛉虫

英英释义

单词用法

同义词

反义词

例句

1.The combination of mass media and person-to-person media is the best model of extending transgenic bollworm resistant cotton.

大众传播媒介与人际传播媒介相结合是抗虫棉传播的最佳模式。

2.By setting up bollworm's data base which strengthen forecast work of cotton bollworm.

通过建立棉铃虫数据库来强化棉铃虫的预测预报工作。

3.The total pest controlling input was reduced by 70%, of which the bollworm controlling input was reduced by 90%.

总治虫用药投入减少70%，其中防治棉铃虫用药投入减少90%。

4.The soluble powder:polythiocycloalkanes, has good effective on the control of pest insects such as two-spotted spider mite, cotton bollworm and citrus red spider mite ect.

简介了产品的毒性毒理概况和应用范围，尤其是防治棉红蜘蛛、棉铃虫、柑桔红蜘蛛等害虫的良好特性。

5.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。

6.Based on the direct benefit and cost, the economic threshold of the third generation bollworm was calculated to be 35 eggs per 100 plants for all the levels of soil fertility.

根据防治的直接收益与直接代价，算出了第三代棉铃虫的经济阈值为百株累计卵量35粒，这一阈值可适用于不同肥力水平的地块。

7.Electroantennogram responses of female cotton bollworm (Helicoverpa armigera) to several plant volatiles were tested.

测定了棉铃虫(Helicoverpaarmigera)雌蛾对几种植物挥发物的触角电位反应。

8.A test to determine the toxicological effect of thiodicarb flowables on cotton bollworm (Heliothis armigera) was performed using methods of topical application leaf diping and contact residue.

采用点滴法、浸叶法、药膜法测定了硫双灭多威胶悬剂毒力效果。

9.A test to determine the toxicological effect of thiodicarb flowables on cotton bollworm (Heliothis armigera) was performed using methods of topical application leaf diping and contact residue.

采用点滴法、浸叶法、药膜法测定了硫双灭多威胶悬剂毒力效果。

10.Organic farmers often face challenges from bollworm without synthetic pesticides.

有机农民常常面临来自棉铃虫的挑战，因为他们不使用合成农药。

11.Farmers are concerned about the impact of bollworm on their cotton crops this season.

农民们担心棉铃虫对他们今年棉花作物的影响。

12.The bollworm infestation led to a significant decrease in crop yield last year.

去年，棉铃虫的侵扰导致了作物产量的显著下降。

13.Researchers are studying the mating habits of the bollworm to find better control methods.

研究人员正在研究棉铃虫的交配习性，以寻找更好的控制方法。

14.The pesticide was effective in controlling the bollworm population in the fields.

这种农药在控制田地里棉铃虫的数量方面非常有效。

作文

The agricultural industry faces numerous challenges, one of the most significant being pests that threaten crop yields. Among these pests, the bollworm (棉铃虫) stands out as a notorious enemy to cotton farmers. Understanding the biology and behavior of the bollworm is crucial for developing effective management strategies to protect crops. The bollworm, scientifically known as Helicoverpa zea, is a moth whose larvae are particularly destructive to cotton plants. These caterpillars feed on the flowers and bolls of cotton, leading to significant economic losses each year. The life cycle of the bollworm begins with eggs laid on the leaves of host plants. After hatching, the larvae begin to consume the plant material, which can result in stunted growth and reduced yields. Farmers often find themselves in a constant battle against the bollworm. Traditional pest control methods, such as the application of chemical insecticides, have been widely used to combat this pest. However, the over-reliance on chemicals has led to the development of resistance among bollworm populations. This resistance not only makes it more challenging to control these pests but also raises concerns about environmental sustainability and the health risks associated with pesticide use. In response to these challenges, integrated pest management (IPM) strategies have emerged as a more sustainable approach. IPM combines biological, cultural, and chemical control methods to manage bollworm populations effectively. For instance, introducing natural predators or parasitoids that target bollworm larvae can help reduce their numbers without harming beneficial insects. Additionally, crop rotation and planting resistant varieties of cotton can minimize the impact of bollworm infestations. Research continues to play a vital role in understanding the bollworm and its interactions with the environment. Scientists are exploring genetic engineering as a potential solution to combat this pest. For example, genetically modified cotton plants that express Bacillus thuringiensis (Bt) toxin have shown promise in reducing bollworm damage. These plants are engineered to produce a protein that is toxic to the larvae, thereby decreasing their survival rates and protecting the crop. However, the introduction of genetically modified organisms (GMOs) into agriculture is not without controversy. While many farmers have reported increased yields and decreased reliance on chemical pesticides, concerns about biodiversity, ecosystem balance, and long-term effects on human health persist. Thus, ongoing research and public dialogue are essential to navigate the complexities surrounding the use of GMOs in combating the bollworm. In conclusion, the bollworm poses a significant threat to cotton production, impacting farmers' livelihoods and the agricultural economy. By understanding its biology and implementing sustainable pest management practices, farmers can better protect their crops from this destructive pest. Future advancements in research and technology will continue to shape the strategies used to combat the bollworm, ultimately contributing to more resilient agricultural systems. As we move forward, striking a balance between effective pest control and environmental stewardship will be key to ensuring a sustainable future for agriculture.

农业行业面临着许多挑战，其中最重要的挑战之一是威胁作物产量的害虫。在这些害虫中，bollworm（棉铃虫）作为棉花农民的一个臭名昭著的敌人而脱颖而出。理解bollworm的生物学和行为对于制定有效的管理策略以保护作物至关重要。bollworm，科学上称为Helicoverpa zea，是一种蛾，其幼虫对棉花植物特别具有破坏性。这些毛虫以棉花的花和铃果为食，每年导致显著的经济损失。bollworm的生命周期始于在寄主植物的叶子上产卵。孵化后，幼虫开始消耗植物材料，这可能导致生长停滞和产量减少。农民常常发现自己与bollworm进行着一场持久的斗争。传统的害虫控制方法，如施用化学杀虫剂，已被广泛用于对抗这一害虫。然而，对化学药品的过度依赖导致了bollworm种群的抗药性发展。这种抗药性不仅使控制这些害虫变得更加困难，而且还引发了对环境可持续性和与农药使用相关的健康风险的担忧。为了应对这些挑战，综合害虫管理（IPM）策略作为一种更可持续的方法应运而生。IPM结合了生物、文化和化学控制方法，以有效管理bollworm种群。例如，引入针对bollworm幼虫的自然捕食者或寄生虫可以帮助减少它们的数量，而不会对有益昆虫造成伤害。此外，轮作和种植抗病品种的棉花可以最小化bollworm侵扰的影响。研究在理解bollworm及其与环境相互作用方面继续发挥着至关重要的作用。科学家们正在探索基因工程作为对抗这一害虫的潜在解决方案。例如，表达巴氏芽孢杆菌（Bt）毒素的转基因棉花植物在减少bollworm损害方面显示出希望。这些植物经过工程改造，能够产生对幼虫有毒的蛋白质，从而降低它们的存活率，保护作物。然而，转基因生物（GMO）在农业中的引入并非没有争议。虽然许多农民报告称产量增加且对化学杀虫剂的依赖减少，但关于生物多样性、生态系统平衡和对人类健康的长期影响的担忧依然存在。因此，持续的研究和公众对话对于驾驭围绕使用GMO对抗bollworm的复杂性至关重要。总之，bollworm对棉花生产构成了重大威胁，影响着农民的生计和农业经济。通过理解其生物学并实施可持续的害虫管理实践，农民可以更好地保护他们的作物免受这种破坏性害虫的侵害。未来的研究和技术进步将继续塑造用于对抗bollworm的策略，最终有助于建立更具韧性的农业系统。随着我们向前发展，在有效的害虫控制和环境管理之间取得平衡将是确保农业可持续未来的关键。