不同肥料组合对冬小麦水分供需状况的研究

应用生态学报 ›› 2000, Vol. ›› Issue (5): 713-717.

不同肥料组合对冬小麦水分供需状况的研究

曹靖¹, 胡恒觉²

1. 兰州大学干旱农业生态国家重点实验室, 兰州730000;
2. 甘肃农业大学, 兰州730070

收稿日期:1999-11-08 修回日期:2000-02-09 出版日期:2000-09-25
通讯作者: 曹靖,女,1970年生,博士,主要从事植物生态学研究,发表论文多篇.E-mail:caojing@public.lz.gs.cn
基金资助:
国家攀登计划资助项目(95-31-01-03)

Effect of different fertilizer combinations on water supply-demand status of winter wheat

CAO Jing¹, HU Hengjue²

1. State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000;
2. Gansu Agricultural University, Lanzhou 730070

Received:1999-11-08 Revised:2000-02-09 Online:2000-09-25

摘要/Abstract

摘要： 采用D-饱和最优设计对半湿润易旱区冬小麦在各生育阶段土壤水分平衡状况以及不同肥料组合对冬小麦产量和水分利用效率的影响进行了分析和研究.结果表明,根据水量平衡法计算不同施肥条件下土壤供水量明显不同,以N、P、有机肥组合土壤供水占的比例最大为27%,单施氮肥利用降水补给占的比例最高为100%.整个生育期,单施氮肥冬小麦水分亏缺最严重,而磷肥与有机肥组合水分亏缺程度最小.N、P、有机肥组合能显著提高冬小麦产量和水分利用效率,其次为氮磷肥配合施用.

Abstract: The soil water status during various growing stages of winter wheat and the effect of different fertilizer combinations on its yield and water use efficiency (WUE) were studied in a semihumid and slanting drought area by using the design of D-optimun saturation.According to water balance law,soil water supply was obviously different with different fertilizer combinations,reaching a peak when N and P fertilizers were combined applied with organic fertilizer,accounting for 27% of total water consumption. N fertilizer added alone took up 100% of total water consumption from rainfall.Water deficiency was most severe when N fertilizer was applied alone,but was the smallest when P fertilizer was applied with organic fertilizer.The combination of N,P and organic fertilizer could significantly improve winter wheat yield and its WUE.

曹靖, 胡恒觉. 不同肥料组合对冬小麦水分供需状况的研究[J]. 应用生态学报, 2000, (5): 713-717.

CAO Jing, HU Hengjue. Effect of different fertilizer combinations on water supply-demand status of winter wheat[J]. Chinese Journal of Applied Ecology, 2000, (5): 713-717.