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| 微集雨模式与降雨变律对燕麦大田水生态过程的影响 | |
| 引用本文： | 强生才,张恒嘉,莫非,赵鸿,周宏,熊友才.微集雨模式与降雨变律对燕麦大田水生态过程的影响[J].生态学报,2011,31(9):2365-2373. |
| 作者姓名： | 强生才 张恒嘉 莫非 赵鸿 周宏 熊友才 |
| 作者单位： | 1. 甘肃农业大学工学院,兰州,730070;兰州大学干旱与草地教育部重点实验室,兰州,730000;甘肃省干旱生境作物学重点实验室,兰州,730070 2. 甘肃农业大学工学院,兰州,730070;甘肃省干旱生境作物学重点实验室,兰州,730070 3. 兰州大学干旱与草地教育部重点实验室,兰州,730000 4. 兰州大学干旱与草地教育部重点实验室,兰州,730000;中国气象局兰州干旱气象研究所,甘肃省气候变化与减灾重点(开放)实验室,兰州,730020 5. 甘肃农业大学工学院,兰州,730070;兰州大学干旱与草地教育部重点实验室,兰州,730000 |
| 基金项目： | 中央高校基本科研业务费专项资金项目(lzujbky2010k02);国家公益性行业(气象)科研专项子课题(GYHY201106029);国家自然科学基金项目(31070372);教育部新世纪优秀人才支持计划项目(NCET-07-0396);兰州大学人才引进专项(582449) |
| 摘 要： | 以春燕麦坝莜3号品种为试材,分别于2009年和2010年在甘肃省定西市农业气象站进行大田试验。两个生育期的降雨总量基本一致,其中2009年生长季的降雨变律特征与多年观察值相似,而2010年则表现为"前半期降雨多、后半期降雨少"的变律特征。微集雨技术共含8个不同处理,包括①平地不种植(裸地)、②平地种植和③6个垄沟和覆膜处理组(3种垄沟宽度比(2 ∶ 1、1 ∶ 1和2 ∶ 3)× 2种覆膜方式(垄上覆膜和不覆膜)),测定了各处理组土壤剖面贮水量、耗水量、水分利用效率和产量相关指标。结果表明,垄上覆膜处理组的叶面积指数、水分利用效率和产量显著高于其它处理组,同时提高了雨水转化为土壤水和作物水的转化效率,并促进了生育后期土壤贮水量的迅速回升。就不同垄沟比来说,各参数值在垄沟比为1 ∶ 1的处理组中最高。此外,就两种降雨变律年型而言,"降雨量前倾"的2010年燕麦的水分利用效率、产量和叶面积指数显著高于2009年(P<0.05),且显著提高了0-130 cm剖面土壤贮水量。 |
| 关 键 词： | 降雨变律 微集雨模式 水生态过程 水分利用效率 燕麦 |
| 收稿时间： | 3/6/2011 12:00:00 AM |
| 修稿时间： | 2011/4/26 0:00:00 |
The effects of micro-rainwater harvesting pattern and rainfall variability onwater ecological stoichiometry in oat (Avena sativa L.) field |
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| QIANG Shengcai,ZHANG Hengji,MO Fei,ZHAO Hong,ZHOU Hong and XIONG Youcai.The effects of micro-rainwater harvesting pattern and rainfall variability onwater ecological stoichiometry in oat (Avena sativa L.) field[J].Acta Ecologica Sinica,2011,31(9):2365-2373. | |
| Authors: | QIANG Shengcai ZHANG Hengji MO Fei ZHAO Hong ZHOU Hong and XIONG Youcai |
| Institution: | College of Engineering Sciences, Gansu Agricultural University, Lanzhou 730070, China;MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China;Gansu Key Laboratory of Aridland Crop Science,Gansu Agricultural University, Lanzhou 730070, China;College of Engineering Sciences, Gansu Agricultural University, Lanzhou 730070, China;Gansu Key Laboratory of Aridland Crop Science,Gansu Agricultural University, Lanzhou 730070, China;MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China;MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China;Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Key Open Laboratory of Arid climate Change and disaster Reduction of CMA, Institute of Arid Meteorology, CMA, Lanzhou 730020, China;College of Engineering Sciences, Gansu Agricultural University, Lanzhou 730070, China;MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China;MOE Key Laboratory of Arid and Grassland Ecology, Lanzhou University, Lanzhou 730000, China |
| Abstract: | Over last two decades,micro-rainwater harvesting technology has been widely used in dryland agricultural practice,but the effects of the design of this technique and the variability of regional rainfall on the storage,migration and utilization of rainwater in soil is very rare.Field experiments were conducted using the spring oat(Avena sativa L.) variety,Dingyou 3 as test material,at Dingxi Agricultural Meterological Experimental Station of Gansu Province in 2009 and 2010.Despite the total rainfall amount f... |
| Keywords: | rainfall variability micro rainwater-collecting water ecological process water use efficiency oat |
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