preemergence

简明释义

英[priːˈɛmərdʒəns]美[priːˈɛmərdʒəns]

出苗前

出土前施用的

英英释义

单词用法

同义词

反义词

例句

1.Compounds were sprayed immediately after seed planting (preemergence treatment) or after the expansion of the first true leaf (postemergence treatment).

在播种后(萌前处理)或第一片真叶展开后(萌后处理)立即喷洒化合物。

2.Compounds were sprayed immediately after seed planting (preemergence treatment) or after the expansion of the first true leaf (postemergence treatment).

在播种后(萌前处理)或第一片真叶展开后(萌后处理)立即喷洒化合物。

3.The preemergence treatment is crucial for preventing competition between crops and weeds.

进行预发芽处理对于防止作物与杂草之间的竞争至关重要。

4.The farmer applied a preemergence herbicide to control weeds before they could sprout.

农民施用了预发芽除草剂，以控制杂草在发芽之前。

5.Understanding the preemergence process can help in developing better agricultural practices.

理解预发芽过程可以帮助开发更好的农业实践。

6.In our research, we focused on the preemergence phase of plant growth to improve yield.

在我们的研究中，我们专注于植物生长的预发芽阶段，以提高产量。

7.Farmers often rely on preemergence strategies to manage pest populations effectively.

农民通常依靠预发芽策略有效管理害虫种群。

作文

In the realm of agriculture and environmental science, the term preemergence refers to a crucial stage in the life cycle of plants, particularly when discussing weed control and crop management. During this phase, seeds are present in the soil but have not yet germinated. Understanding the concept of preemergence is vital for farmers and agronomists, as it can significantly influence the success of a crop yield. By applying herbicides or other treatments during the preemergence stage, farmers can prevent weeds from establishing themselves, thereby allowing their crops to thrive without competition for resources.The significance of preemergence treatment lies in its proactive approach to weed management. Instead of waiting for weeds to emerge and then attempting to control them, which can be more challenging and less effective, preemergence strategies focus on disrupting weed seed germination before it occurs. This method not only saves time and labor but also reduces the reliance on post-emergence herbicides, which may have negative environmental impacts.Moreover, the timing of preemergence applications is critical. Farmers must carefully monitor soil temperatures and moisture levels to determine the optimal moment for treatment. If applied too early or too late, the effectiveness of these interventions can diminish, leading to poor weed control and potentially harming the crop. Therefore, an understanding of local climate patterns and soil conditions is essential for successful preemergence management.In addition to weed control, the preemergence phase is also relevant in the context of ecological restoration and conservation. When restoring native plant communities, for example, practitioners often utilize preemergence techniques to suppress invasive species that may outcompete desired plants. By strategically applying treatments during the preemergence period, restoration efforts can be more effective, leading to healthier ecosystems.Furthermore, the concept of preemergence extends beyond agriculture and ecology. In a broader sense, it can be applied to various fields, including psychology and sociology. For instance, one might consider the preemergence of social movements or trends. Just as in agriculture, where early intervention can prevent undesirable outcomes, recognizing the signs of a potential social change before it fully materializes can allow for strategic planning and response.In conclusion, the term preemergence encapsulates a pivotal moment in various contexts, particularly in agriculture and environmental science. By focusing on this preliminary stage, individuals and organizations can implement measures that enhance productivity, promote sustainability, and foster ecological balance. Whether dealing with crops, ecosystems, or societal trends, understanding and leveraging the preemergence phase can lead to more effective outcomes and a deeper appreciation of the complexities involved in managing both natural and social systems. As we continue to face challenges related to food security and environmental degradation, the principles surrounding preemergence will undoubtedly play a key role in shaping our approaches to these pressing issues.

在农业和环境科学领域，术语preemergence指的是植物生命周期中的一个关键阶段，特别是在讨论杂草控制和作物管理时。在这个阶段，种子存在于土壤中，但尚未发芽。理解preemergence的概念对于农民和农艺师至关重要，因为它可以显著影响作物产量的成功。通过在preemergence阶段施用除草剂或其他处理，农民可以防止杂草建立，从而使他们的作物在资源竞争中茁壮成长。preemergence处理的重要性在于其对杂草管理的主动方法。与其等到杂草出现再试图控制它们（这可能更具挑战性且效果较差），不如在杂草种子发芽之前就采取preemergence策略。这种方法不仅节省了时间和劳动力，还减少了对后发除草剂的依赖，而后者可能对环境产生负面影响。此外，preemergence应用的时机至关重要。农民必须仔细监测土壤温度和湿度，以确定最佳处理时机。如果施用得太早或太晚，这些干预措施的有效性可能会降低，导致杂草控制不力，并可能对作物造成伤害。因此，了解当地气候模式和土壤条件对于成功的preemergence管理至关重要。除了杂草控制，preemergence阶段在生态恢复和保护的背景下也很相关。例如，在恢复本地植物群落时，实践者通常利用preemergence技术来抑制可能与期望植物竞争的入侵物种。通过在preemergence阶段战略性地施用处理，恢复工作可以更加有效，从而导致生态系统更健康。此外，preemergence的概念超越了农业和生态学。在更广泛的意义上，它可以应用于各个领域，包括心理学和社会学。例如，人们可以考虑社会运动或趋势的preemergence。正如在农业中，早期干预可以防止不良结果一样，识别潜在社会变革的迹象并在其完全形成之前采取行动，可以让人们进行战略规划和响应。总之，术语preemergence概括了在各种背景下的重要时刻，特别是在农业和环境科学中。通过关注这一初步阶段，个人和组织可以实施措施，提高生产力，促进可持续发展，并促进生态平衡。无论是处理作物、生态系统还是社会趋势，理解和利用preemergence阶段都可以带来更有效的结果，并更深入地理解管理自然和社会系统所涉及的复杂性。随着我们继续面临与粮食安全和环境退化相关的挑战，围绕preemergence的原则无疑将在塑造我们应对这些紧迫问题的方法中发挥关键作用。