摘要
为了研究矮砧苹果树根系吸水深度,利用氢氧稳定同位素技术,测定了7年生矮砧苹果树在萌芽花期、新梢旺长期和果实膨大期不同深度土壤水的稳定同位素值,并应用IsoSource多元线性模型分析水源的水分贡献率。结果表明:矮砧苹果树在萌芽花期主要利用0~20 cm(59.5%)处的土壤水;在新梢旺长期6月主要吸水深度为0~20 cm(42.9%)和20~40 cm(11.1%);新梢旺长期7月根系的主要吸水深度为0~20 cm(24.3%)和20~40 cm(29.1%);果实膨大期8月为0~20 cm(23.6%)、20~40 cm(37.1%)和40~60 cm(11.6%);果实膨大期9月为0~20 cm(26.3%)、20~40 cm(27.3%)和40~60 cm(13.8%)。
In order to study the water absorption depth of roots of dwarf anvil apple trees, the stable isotope values of soil water at different depths of 7 years old dwarf anvil apple trees during the period of germination and flowering, the period of new shoots and the period of fruit expansion were determined by using the hydrogen-oxygen stable isotope technology, and the water contribution rate of water source was analyzed by using the IsoSource multiple linear model. The results showed that the soil water at 0~20 cm (59.5%) was mainly used in dwarf apple trees. In June of new shoot flourishing period, the main water absorption depth was 0~20 cm (42.9%) and 20~40 cm (11.1%). The main water absorption depth of root system in July of new shoot flourishing period was 0~20 cm (24.3%) and 20~40 cm (29.1%). It was 0~20 cm (23.6%), 20~40 cm (37.1%) and 40~60 cm (11.6%) in August of fruits bulking stage. And it was 0~20 cm (26.3%), 20~40 cm (27.3%) and 40~60 cm (13.8%) in September of fruits bulking stage.
作者
郭飞
高磊
马娟娟
GUO Fei;GAO Lei;MA Juan-juan(China Water Rights Exchange, Beijing 100053, China;College of Water Resources Science and Engineering, Taiyuan University of Technology, Taiyuan 030024,China)
出处
《节水灌溉》
北大核心
2019年第6期10-13,共4页
Water Saving Irrigation
基金
国家自然科学基金项目(51109154,51249002)
教育部博士点基金项目(20111402120006,20121402110009)
山西省青年科技研究基金项目(2012021026-2)
山西省科技攻关项目(20110311018-1,20140311016-6)
2015年山西省研究生教育创新项目(2015BY27)
关键词
苹果树
根系吸水
氢氧稳定同位素
水分贡献率
apple tree
root water absorption
hydrogen and oxygen stable isotopes
water contribution rate