这个节气要来了！全年昼夜温差值将达到最大
<section><section powered-by="xiumi.us"><section><section powered-by="xiumi.us"><span style="letter-spacing: 1px;">露从今夜白，夜自此日凉。《2021年中国天文年历》显示，北京时间9月7日17时53分将迎来“白露”节气。</span><br/></section></section></section></section><p><section><section powered-by="xiumi.us"><section style="line-height: 2em;"><span style="letter-spacing: 1px;"><br/></span></section><section style="line-height: 2em;"></section><section style="line-height: 2em;"><br/></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;">历史学者、天津社科院研究员罗澍伟介绍，每年公历的9月7日、8日或9日，太阳到达黄经165度时，为“白露”节气的开始，它是二十四节气中的第十五个节气，也是秋季的第三个节气。此时节，农作物即将成熟，气温逐渐下降，天气开始转凉，早晚温差增大，空气中的水蒸气凌晨时会在地面或植物的叶面凝成白色露珠，所以叫“白露”。</span></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;"><br/></span></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;">“白露暖秋色，月明清漏中。”“白露”一到，标志着孟秋的结束和仲秋的开始。“寒生露凝”，给这个节气带来了诗意，也带来了灵性。而人们对“白露”的最初印象，大多来自《诗经》中那首《蒹葭》：“蒹葭苍苍，白露为霜。所谓伊人，在水一方。”</span></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;"><br/></span></section><section style="line-height: 2em;"></section><section style="line-height: 2em;"><br/></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;">从“白露”开始，衰荷半倒，篱菊自黄，鸟类率先做过冬的准备。“白露”对农作物的秋播秋种秋收有着重要的影响，夏秋作物即将成熟或者已经成熟。“因为是收获的季节，我国不少地区在这一天要把收获的粮食或果蔬拿来供奉或祭祀天地，祈求来年风调雨顺，五谷丰登，仓廪殷实。”罗澍伟说。</span></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;"><br/></span></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;">“白露”是一年中昼夜温差最大的节气。这时北半球日照变短，太阳直射点南移，地面温度下降；暖空气逐渐减弱，冷空气活动频繁，飒飒秋风，不期而至，一夜凉过一夜。</span></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;"><br/></span></section><section style="line-height: 2em;"></section><section style="line-height: 2em;"><br/></section><section style="line-height: 2em;"><span style="letter-spacing: 1px;">面对这样的天气变化，公众应如何养生保健？罗澍伟结合民间传统和养生专家的建议说，“白露身不露”，公众要随时注意添加衣物，以防受凉感冒。饮食上宜遵循“养气润燥”的原则，适当选用山药、银耳、百合、杏仁、雪梨、萝卜、番茄、蜂蜜等有益脾胃和滋阴生津的食物；平时多饮水，保持呼吸道与肺部的湿润度。坚持温水浴足，穴位按摩，以促进血液循环。起居方面，早睡早起，充足睡眠，适当运动，劳逸结合，同时注意精神调摄，做到心胸开阔，情绪稳定，宁神定志，增强免疫功能。</span></section></section></section><section><section powered-by="xiumi.us"><section><section><section><section><section data-role="outer" label="Powered by 135editor.com"><section data-role="paragraph"></section></section></section></section></section></section></section></section></p><p style="margin: 0cm 0cm 0.0001pt;white-space: normal;max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif;letter-spacing: 0.544px;line-height: 19.2pt;text-align: left;box-sizing: border-box !important;overflow-wrap: break-word !important;"><br/></p><p><section style="white-space: normal;box-sizing: border-box;font-size: 16px;"><section powered-by="xiumi.us" style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;"><section style="height: 1px;background-color: rgb(160, 160, 160);box-sizing: border-box;line-height: 0;"><br/></section></section></section></p><p style="margin: 0cm 0cm 0.0001pt;white-space: normal;max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif;letter-spacing: 0.544px;line-height: 19.2pt;text-align: left;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span style="letter-spacing: 0.544px;max-width: 100%;color: rgb(136, 136, 136);font-size: 14px;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span style="color: rgb(136, 136, 136); 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