growth regulator

简明释义

生长第素

英英释义

例句

1.Scientists are researching new types of growth regulators for better crop yields.

科学家们正在研究新型的生长调节剂以提高作物产量。

2.Farmers often apply growth regulators to control the height of crops.

农民常常施用生长调节剂来控制作物的高度。

3.The growth regulator helps to reduce the time it takes for seeds to germinate.

该生长调节剂有助于缩短种子发芽所需的时间。

4.In horticulture, a specific growth regulator is used to promote flowering in plants.

在园艺中，特定的生长调节剂被用来促进植物开花。

5.The use of a growth regulator can enhance plant development in agricultural practices.

使用生长调节剂可以增强农业实践中的植物生长。

作文

In the world of agriculture and horticulture, the term growth regulator is frequently used to describe a class of substances that influence the growth and development of plants. These substances can either promote or inhibit plant growth, depending on their chemical composition and the concentration at which they are applied. Understanding how growth regulators work is crucial for farmers and gardeners alike, as they can significantly enhance crop yields and improve the quality of plants.One of the most common types of growth regulators is auxins. Auxins are primarily responsible for cell elongation and are essential for the proper formation of roots and shoots. They help in the regulation of various plant processes, including phototropism (the growth of plants towards light) and gravitropism (the growth of plants in response to gravity). For instance, when a plant is exposed to light from one side, auxins accumulate on the shaded side, causing those cells to elongate and the plant to bend towards the light source.Another important category of growth regulators is gibberellins. These compounds are known for their role in promoting stem elongation, seed germination, and flowering. Gibberellins can be particularly useful in breaking dormancy in seeds, allowing them to sprout under favorable conditions. Additionally, they can induce flowering in certain plants, making them valuable tools for commercial growers who wish to synchronize flowering times for harvesting.Cytokinins are another type of growth regulator, which play a vital role in cell division and shoot formation. They promote lateral bud growth and delay leaf senescence, thus contributing to the overall health and longevity of plants. By applying cytokinins, gardeners can encourage bushier plants with more flowers, enhancing both aesthetics and productivity.On the other hand, not all growth regulators are designed to promote growth. Some, like abscisic acid, act as inhibitors. Abscisic acid is crucial for regulating water loss in plants and inducing dormancy during unfavorable conditions. It helps plants conserve resources by closing stomata, thereby reducing transpiration. This is particularly important during droughts, as it allows plants to survive until more favorable conditions return.The application of growth regulators must be done with caution, as improper use can lead to adverse effects. Over-application can result in stunted growth, abnormal development, or even plant death. Therefore, it is essential for users to understand the specific needs of their plants and apply these substances judiciously.In conclusion, growth regulators are powerful tools in the field of plant science. They have the potential to revolutionize agricultural practices by improving crop yields and ensuring better quality produce. However, with great power comes great responsibility; understanding their mechanisms and effects is crucial for anyone looking to utilize them effectively. As research continues to advance, we can expect to see even more innovative applications of growth regulators in agriculture and horticulture, paving the way for sustainable and efficient farming practices.

在农业和园艺的世界中，术语生长调节剂常用于描述一类影响植物生长和发育的物质。这些物质可以促进或抑制植物生长，具体取决于它们的化学成分和施用浓度。理解生长调节剂的工作原理对农民和园丁来说至关重要，因为它们可以显著提高作物产量并改善植物质量。最常见的生长调节剂之一是生长素。生长素主要负责细胞伸长，并且对根和芽的正常形成至关重要。它们有助于调节植物的各种过程，包括向光性（植物向光生长）和向重力性（植物对重力的生长反应）。例如，当植物从一侧暴露在光线下时，生长素会在阴影一侧积累，使那些细胞伸长，从而使植物弯向光源。另一类重要的生长调节剂是赤霉素。这些化合物以促进茎伸长、种子萌发和开花而闻名。赤霉素特别有助于打破种子的休眠状态，使它们在有利条件下发芽。此外，它们还可以诱导某些植物开花，对于希望同步开花时间以便收获的商业种植者来说，这些化合物是非常有价值的工具。细胞分裂素是另一种类型的生长调节剂，在细胞分裂和芽形成中发挥着重要作用。它们促进侧芽生长并延缓叶片衰老，从而有助于植物的整体健康和寿命。通过施用细胞分裂素，园丁可以鼓励植物变得更加丰腴，开出更多的花，从而提升美观和生产力。另一方面，并非所有的生长调节剂都是为了促进生长。有些，如脱落酸，起到抑制的作用。脱落酸对于调节植物中的水分流失和在不利条件下诱导休眠至关重要。它通过关闭气孔帮助植物节省资源，从而减少蒸腾作用。在干旱期间，这一点尤为重要，因为它使植物能够在更有利的条件恢复之前存活下来。施用生长调节剂必须谨慎，因为不当使用可能导致不良影响。过量施用可能导致生长受阻、发育异常，甚至植物死亡。因此，用户了解植物的特定需求并谨慎施用这些物质至关重要。总之，生长调节剂是植物科学领域强大的工具。它们有潜力通过提高作物产量和确保更好的优质农产品来彻底改变农业实践。然而，强大的力量伴随着巨大的责任；理解它们的机制和效果对于任何希望有效利用它们的人来说都是至关重要的。随着研究的不断进展，我们可以期待在农业和园艺中看到更多创新的生长调节剂应用，为可持续和高效的农业实践铺平道路。