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水分胁迫对旱作水稻产量与养分吸收的影响
引用本文:柏彦超,倪梅娟,王娟娟,瞿益民,盛海君,封克,钱晓晴.水分胁迫对旱作水稻产量与养分吸收的影响[J].农业工程学报,2007,23(6):101-104.
作者姓名:柏彦超  倪梅娟  王娟娟  瞿益民  盛海君  封克  钱晓晴
作者单位:1. 扬州大学环境科学与工程学院,扬州,225009;扬州大学农学院,扬州,225009
2. 扬州大学环境科学与工程学院,扬州,225009
3. 莱顿大学数学与自然科学系,荷兰莱顿,2300
4. 南通市崇川水利科学研究所,南通,226300
基金项目:江苏省自然科学基金;国家自然科学基金
摘    要:采用高砂土充填的PVC土柱模拟地下水埋深来控制土壤水分状况,研究不同程度的水分胁迫对水稻产量及养分吸收的影响。结果表明:在地下水埋深10~50 cm范围内,随埋深深度的增加,水稻生物学产量及经济产量有不同程度的降低。适当的地下水埋深有利于水稻作物对氮素的吸收和钙、氯元素的累积,促进水稻体内可溶性总糖和蔗糖含量的增加;但地下水埋深过大则不利于水稻作物对磷、镁、钠等元素的吸收,并妨碍成熟期籽粒中钾向秸秆的回流。

关 键 词:地下水埋深  水稻  产量  养分吸收
文章编号:1002-6819(2007)6-0101-04
收稿时间:2006/7/10 0:00:00
修稿时间:2006-07-102007-01-27

Effects of water stress on rice yields and nutrients absorption under aerobic condition
Bai Yanchao,Ni Meijuan,Wang Juanjuan,Qu Yimin,Sheng Haijun,Feng Ke and Qian Xiaoqing.Effects of water stress on rice yields and nutrients absorption under aerobic condition[J].Transactions of the Chinese Society of Agricultural Engineering,2007,23(6):101-104.
Authors:Bai Yanchao  Ni Meijuan  Wang Juanjuan  Qu Yimin  Sheng Haijun  Feng Ke and Qian Xiaoqing
Institution:College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China;College of Agriculture, Yangzhou University, Yangzhou 225009, China;College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China;Faculty of Mathematics and Natural Science, Leiden University, RA Leiden 2300, Netherlands;Chongchuan Institute of Hydraulic Science, Nantong 226300, China;College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China;College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China;College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, China
Abstract:PVC pumps filled with high-sandy soil were used to simulate groundwater table for controlling soil moisture. Effects of water stress on yields, nutrients absorption of rice were analyzed. Results show that both biological and economical yields of rice decrease with the increase of groundwater table ranged from 10 cm to 50 cm. Nitrogen absorption and Ca2+ and Cl- accumulation of rice are accelerated under the reasonable groundwater table. Total soluble sugars and sucrose content of rice straw increase as well. However, phosphorus absorption, Mg2+ and Na+ accumulation of rice is reduced, and the transportation of K+ from the seeds back to the straws at ripening stage are retarded when groundwater table is low.
Keywords:groundwater table  rice  yield  nutrient absorption
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