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多元灌溉抗旱无忧
Jing Ji Ri Bao· 2025-07-27 22:15
盛夏的清晨,在河南省新乡市新乡县小冀镇高标准农田里,河南农业大学科技小院指导老师赵亚南在玉 米地里,俯身注视着一条条黑色滴灌带。"轻按这个开关,水肥混合液就能顺着滴灌带精准送到玉米根 部。"赵亚南一边向种粮大户李绍林演示操作,一边叮嘱道:"现在玉米正处在抽雄关键期,水肥要喂得 及时又精准。" 田间的滴灌带如同密布的"毛细血管",每隔30厘米就有个针眼大的小孔,晶莹的水滴裹挟着养分缓缓渗 出,沿着土壤缝隙渗入玉米根系。李绍林流转的500余亩地里,玉米、大豆错落生长,滴灌系统正有条 不紊地作业。"往年大水漫灌,不仅费水,高温天气还容易让根部受涝。现在用这浅埋滴灌,在设备全 部开启的情况下3天就能把所有地浇一遍,而且能节省一半的用水量。"李绍林扒开土层说,"你看这墒 情,玉米肯定能长好。" 在新乡县,滴灌技术只是抗旱保苗的利器之一。沿着人民胜利渠畔的田埂前行,只见黄河水顺着新修缮 的支渠分流到翟坡镇农田。种粮户郑纪昌站在渠边,看着水流漫过干裂的田垄。"前两天玉米叶子卷得 像麻花,引黄河水浇了两天,现在你再看这叶片,又挺又绿!"郑纪昌指着自家玉米地说,"往年靠井 灌,电费成本高不说,遇上旱情还得排队。现在河灌加井灌, ...
中国中亚合筑生态治理“绿堤”(环球热点)
Core Viewpoint - The collaboration between China and Central Asian countries to address the ecological crisis of the Aral Sea is gaining attention, showcasing significant achievements in ecological governance and sustainable agricultural practices [3][7]. Group 1: Ecological Governance Initiatives - China and Central Asian countries have conducted joint scientific investigations and implemented various ecological projects, including saline-alkali land management and the establishment of water-saving cotton demonstration areas [3][6]. - The "Photovoltaic + Cotton Water and Fertilizer Integration" demonstration area in Uzbekistan has doubled cotton yields while significantly reducing costs and water usage through advanced irrigation and fertilization technologies [4][6]. Group 2: Technological Collaboration - The integration of Chinese photovoltaic panels and smart irrigation systems has led to an average cotton yield of 307 kg per mu in the demonstration area, which is substantially higher than the local average of 120 kg per mu, while water usage is approximately 70% of the local norm [6][7]. - The collaboration has provided a platform for technical exchanges between Chinese and Uzbek scientists, enhancing local capabilities in ecological governance [6][8]. Group 3: Regional Challenges and Responses - The Aral Sea, once the fourth largest lake in the world, has shrunk to about 10% of its original size due to human activities and climate change, leading to severe ecological consequences [4][7]. - The ecological crisis of the Aral Sea is a shared challenge for Central Asian countries, necessitating cooperative efforts for effective solutions [7][9]. Group 4: Future Prospects and International Cooperation - China has expressed willingness to deepen cooperation with Central Asian countries in addressing the Aral Sea ecological crisis, as highlighted during the first China-Central Asia Summit [7][9]. - The establishment of agricultural technology demonstration centers and platforms for bilateral agricultural cooperation is expected to enhance food production and promote sustainable agricultural practices in the region [8][9].