不同施肥处理下麦田水分利用过程及其效率特征
张燕青 ; 刘文兆
刊名水土保持研究
2012
卷号19期号:05页码:133-138
关键词黄土塬区 words:Loess Tableland 长期定位施肥 long-term fertilization experiment 降水利用效率 precipitation use efficiency 水分利用效率 water use efficiency 产量 冬小麦
其他题名Characteristics of Water Utilization Process and Efficiency under
中文摘要 通过田间试验(2010—2011年),就不同施肥处理下麦田水分利用过程及其效率特征进行研究。结果表明:施磷量为90kg/hm2条件下,配施氮量在0~135kg/hm2时,农田耗水率(农田耗水量占总的供水量的比率,ET/SW)和蒸腾比率(蒸腾量占农田耗水量的比率,T/ET)随配施氮量的增加逐渐提高,考虑蒸腾消耗的作物水分利用率(籽粒产量与蒸腾量的比值,Y/T)和降水利用效率(Y/P)在施氮量为180kg/hm2时达到最大。施氮量为90kg/hm2条件下,配施磷量在90~180kg/hm2时,各处理的农田水分消耗率、蒸腾比率几乎相同,但明显高于单施氮肥处理,只考虑蒸腾消耗的作物水分利用率随施磷量的增加逐渐提高,降水利用效率在施磷量为90kg/hm2时达到最大值。与不施肥处理相比,施磷量为90kg/hm2与施氮量为180kg/hm2处理的麦田,冬小麦从拔节期至成熟期的农田耗水量增加23.5%,蒸腾量增加186.8%;农田水分消耗率提高10.5%,作物蒸腾比率提高200%,作物水分利用效率(Y/ET)达到11.13kg/(hm2.mm),降水利用效率达到18.73kg/(hm2.mm)。
英文摘要Abstract:Characteristics of water utilization process and efficiency under different fertilization treatments
were studied through a field experiment conducted from 2010to 2011.Results showed that under the condition
 of 90kg/hm2 P application,the ratio of cropland water consumption to total supplied water(ET/SW)
and the ratio of total transpiration to cropland water consumption(T/ET)gradually increased with the increased
 rate of N application if the rate of N application was between 0and 135kg/hm2,but crop water use
efficiency with transpiration considered only(the ratio of grain yield to total transpiration,Y/T)and precipitation
 use efficiency(PUE)reached the highest value when the rate of N application was 180kg/hm2.Under
the rate of 90kg/hm2 N application,the ET/SW was almost the same as the T/ET if the rate of P application
 was between 90and 180kg/hm2,but significantly higher than single N application treatment.The Y/T
was gradually increased with the increased P application under the same N application.However,PUE
reached the highest value when P application was 90kg/hm2.In contrast to no fertilizer application,the
combined application of 90kg/hm2 P and 180kg/hm2 N in the winter field,from jointing stage to maturity of
winter wheat,increased the amount of cropland water consumption by 23.5%,the amount of transpiration
by 186.8%,the ET/SW by 10.5%,the T/ET by 200%,the water use efficiency(Y/ET)up to 11.13kg/
(hm2·mm),and PUE up to 18.73kg/(hm2·mm).
语种中文
公开日期2014-10-13
内容类型期刊论文
源URL[http://ir.iswc.ac.cn/handle/361005/5467]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
张燕青,刘文兆. 不同施肥处理下麦田水分利用过程及其效率特征[J]. 水土保持研究,2012,19(05):133-138.
APA 张燕青,&刘文兆.(2012).不同施肥处理下麦田水分利用过程及其效率特征.水土保持研究,19(05),133-138.
MLA 张燕青,et al."不同施肥处理下麦田水分利用过程及其效率特征".水土保持研究 19.05(2012):133-138.
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