Interactive effects of irrigation frequency and nitrogen addition on growth and water use of jatropha curcas

被引：8
作者：
Yang, Qiliang [1 ]
Li, Fusheng [2 ]
Zhang, Fucang [3 ]
Liu, Xiaogang [1 ]
机构：
[1] Kunming Univ Sci & Technol, Fac Modern Agr Engn, Kunming 650500, Yunnan, Peoples R China
[2] Guangxi Univ, Coll Agr, Nanning 530005, Guangxi, Peoples R China
[3] Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China
来源：
BIOMASS & BIOENERGY | 2013年 / 59卷
关键词：
Huber value; Irrigation frequency; Jatropha curcas; Nitrogen supply; Water storage capacity; Water-use efficiency; ROOT-ZONE IRRIGATION; DROUGHT STRESS; LEAF; L; ACCUMULATION; PHOTOSYNTHESIS; FERTILIZATION; PERFORMANCE; SEEDLINGS; MAIZE;
D O I：
10.1016/j.biombioe.2013.08.023
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This study aimed to investigate the effect of nitrogen addition on growth and water use of pot-grown Jatropha curcas (J. curcas) under three irrigation frequencies, i.e. 4d (W1), 8d (W2) and 12d (W3). Results show that compared to W1, W3 significantly reduced net plant growth, leaf area, basal shoot xylem cross-section area, total dry mass and whole water storage capacity and total evapotranspiration under saving irrigation water of 21.0%, but increased irrigation water-use efficiency (WUE1) and crop water-use efficiency (WUEET) by 9.7 and 13.1%, respectively. Meanwhile, W3 had higher Huber value, which may improve transfer water efficiency from roots to shoots. Compared to no nitrogen treatment, nitrogen addition increased total dry mass, whole plant water storage capacity, total evapotranspiration, WUE1 and WUEET by 13.4-38.1, 8.5-17.7, 14.9-17.5, 16.4-30.7 and 17.7-21.9%, respectively. Thus the optimal combination was the treatment with irrigation frequency of 12d and nitrogen supply, which can increase water-use efficiency. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：234 / 242
页数：9
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