CHENG Liping,QI Guang,LI Yanjiao,et al.Stable Isotope Analysis of Soil Water Utilization by Winter Wheat in Dryland of Loess Tableland[J].Research of Soil and Water Conservation,2021,28(03):170-176.
黄土塬区旱作冬小麦土壤水分利用特征的稳定同位素分析
- Title:
- Stable Isotope Analysis of Soil Water Utilization by Winter Wheat in Dryland of Loess Tableland
- 文章编号:
- 1005-3409(2021)03-0170-07
- 关键词:
- 黄土塬区; 土壤水分; 氢氧同位素; IsoSource模型
- 分类号:
- S152.7,S314
- 文献标志码:
- A
- 摘要:
- 通过对长武黄土塬区遮雨样地和自然样地3m深度土壤水标记氘水(D2O),并测定旱作冬小麦不同生育期茎秆水、降水、不同土层土壤水δD和δ18O值,利用稳定同位素技术明确旱作冬小麦能否利用3m深度土壤水分,并定量分析其对不同土层土壤水分利用比例及对降雨量减少的响应。结果表明:(1)旱作冬小麦自开花—灌浆期开始利用3 m深度土壤水分,其对各层土壤水分的利用强度具有随深度增加而减小的趋势;(2)抽穗期至乳熟期,0—50cm土壤水对冬小麦耗水的贡献率为28.0%～36.7%,50—100cm土壤水为24.7%～32.3%,100—200cm土壤水为15.7%～22.3%,200—300cm土壤水为11.4%～17.4%; 300—400cm土壤水对灌浆期—乳熟期冬小麦耗水贡献率为15.6%～16.6%;(3)降雨量减少没有改变旱作冬小麦对3m深度土壤水分利用的起始时间,但是提升了其对深层土壤水分的利用强度,以满足生育耗水的需求。黄土塬区深层土壤储水对于保障冬小麦水分供给具有重要意义,生产实践中需要做好夏闲期蓄水保墒措施,促使深层土壤水分恢复,保证土壤水库调蓄功能的持续发挥。
- Abstract:
- In this paper, soil water at the depth of 300cm both in the rain cover plot and the natural plot in Changwu Loess Tableland were marked by deuterium water, and the δD and δ18 O values of wheat stem water, rainwater and soil water samples in different layers in different growth stages of winter wheat were measured to determine whether winter wheat can use the soil water in 300cm depth. Further, the utilization of soil water in different soil layers by winter wheat in dryland and its response to the reduction of precipitation were analyzed. The results show that:(1)winter wheat begins to use soil water in 300cm depth since the flowering-filling stages, and the utilization of soil water in different soil layers decrease with the increase of soil depth;(2)from the heading stage to the milk, the contribution rates of soil water in 0—50cm, 50—100 cm, 100—200cm and 200—300cm layer to the water consumption of winter wheat were 28.0%～36.7%, 24.7%～32.3%, 15.7%～22.3% and 11.4%～17.4%, respectively, and the contribution rate of soil water in 300—400 cm depth was 15.6%～16.6% during the filling and milk ripening stages;(3)reduction of precipitation dose not change the time of winter wheat use soil water in 300cm depth, but increases the utilization rate of soil water from deep soil layer, so as to meet the water demand during the growing period. Overall, soil water storage in deep layer is significant for winter wheat in dryland of the loess tableland. Therefore, it is necessary to take effective measures to improve the soil water storage during the fallow period in summer in production practice, so as to promote the recovery of soil water in deep layer and maintain sustainable regulation and storage function of the soil reservoir.
参考文献/References:
[1] 邓振镛,张强,王强,等.黄土高原旱塬区土壤贮水量对冬小麦产量的影响[J].生态学报,2011,31(18):5281-5290.[2] 李刚,王亚萍,李超,等.黄土塬区高底墒条件下养分差别对冬小麦产量的影响[J].水土保持研究,2019,26(4):146-150.[3] 李玉山,喻宝屏.土壤深层储水对小麦产量效应的研究[J].土壤学报,1980,17(1):43-54.[4] Schroth G. A review of belowground interactions in agroforestry, focussing on mechanisms and management options[J]. Agroforestry Systems, 1998,43(1):5-34.[5] 刘为健,杨文稼,王盈盈,等.2个小麦品种水分利用效率的差异及其与深层水分利用的关系[J].水土保持学报,2020,34(3):245-251,258.[6] 柳玉凤,谢英荷,杨福田,等.夏闲覆盖和种植方式对黄土旱塬小麦产量及土壤水分的影响[J].灌溉排水学报,2019,38(4):36-42.[7] Dawson T E, Mambelli S, Plamboeck A H, et al. Stable isotopes in plant ecology[J]. Annual Review of Ecology and Systematics, 2002,33(1):507-559.[8] Ehleringer J R, Dawson T E. Water uptake by plants:perspectives from stable isotope composition. Plant Cell Environ[J]. Plant Cell & Environment, 1992,15(9):1073-1082.[9] 于静洁,李亚飞.稳定氢氧同位素定量植物水分来源的不确定性解析[J].生态学报,2018,38(22):7942-7949.[10] Phillips D L, Gregg J W. Source partitioning using stable isotopes:coping with too many sources[J]. Oecologia, 2003,136(2):261-269.[11] 苑晶晶,袁国富,罗毅,等.利用δ18 O信息分析冬小麦对浅埋深地下水的利用[J].自然资源学报,2009,24(2):360-368.[12] 张丛志,张佳宝,张辉.不同深度土壤水分对黄淮海封丘地区小麦的贡献[J].土壤学报,2012,49(4):655-664.[13] 杜俊杉,马英,胡晓农,等.基于双稳定同位素和MixSIAR模型的冬小麦根系吸水来源研究[J].生态学报,2018,38(18):6611-6622.[14] 安江龙,马娟娟,张亚雄,等.两种模型分析方法下冬小麦根系吸水深度的对比研究[J].灌溉排水学报,2017,36(11):25-28.[15] 陈曦,李志,程立平,等.黄土塬区大气降水的氢氧稳定同位素特征及水汽来源[J].生态学报,2016,36(1):98-106.[16] Allison G B. The relations between o-18 and deuterium in water in sand columns undergoing evaporation[J]. Journal of Hydrology, 1982,55:163-169.[17] Schultz N M, Griffis T J, Lee X, et al. Identification and correction of spectral contamination in 2 H/1 H and 18 O/16 O measured in leaf, stem, and soil water[J]. Rapid Communications in Mass Spectrometry Rcm, 2011,25(21):3360-3368.[18] 倪盼盼,朱元骏,巩铁雄.黄土塬区降水变化对冬小麦土壤耗水特性及水分利用效率的影响[J].干旱地区农业研究,2017,35(4):80-87.[19] Cheng X L, An S Q, Li B, et al. Summer rain pulse size and rainwater uptake by three dominant desert plants in a desertified grassland ecosystem in northwestern China[J]. Plant Ecology, 2006,184(1):1-12.[20] 冯广龙,刘昌明.冬小麦根系生长与土壤水分利用方式相互关系分析[J].自然资源学报,1998,13(3):235-241.[21] 康绍忠,刘晓明,熊运章.冬小麦根系吸水模式的研究[J].西北农林科技大学学报:自然科学版,1992,20(2):5-12.[22] Chimner R A, Cooper D J. Using stable oxygen isotopes to quantify the water source used for transpiration by native shrubs in the San Luis Valley, Colorado U. S. A[J]. Plant & Soil, 2004,260(1):225-236.[23] Wu Y J, Zhou H., Zheng X J, et al. Seasonal changes in the water use strategies of three co-occurring desert shrubs[J]. Hydrological Processes, 2014,28(26):6265-6275.[24] 李鹏展,王力,王棣.黄土旱塬区冬小麦土壤水库动态[J].应用生态学报,2017,28(11):3653-3662.
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备注/Memo
收稿日期:2020-07-23 修回日期:2020-08-01资助项目:国家自然科学基金“黄土塬区深剖面土壤水分平衡和地下水补给对土地利用/覆被变化的响应”(41771036); “基于氢氧稳定同位素技术的黄土塬区深层土壤水对冬小麦生育耗水的贡献研究”(41401015)第一作者:程立平(1981—),男,陕西渭南人,博士,副教授,主要从事农业生态水文方向研究。E-mail:lpchengnwu@163.com