Arid
DOI10.1016/j.fcr.2018.02.013
Soil water storage deficit of alfalfa (Medicago sativa) grasslands along ages in arid area (China)
Huang, Ze1,2; Liu, Yu2; Cui, Zeng2; Fang, Yan1,2; He, Honghua2; Liu, Bing-Ru1; Wu, Gao-Lin1,2
通讯作者Wu, Gao-Lin
来源期刊FIELD CROPS RESEARCH
ISSN0378-4290
EISSN1872-6852
出版年2018
卷号221页码:1-6
英文摘要

Alfalfa (Medicago saliva) is a high-yield and high drought-tolerant perennial forage crop, which take up water from deep soil layers by its deep root system. Long-term cultivation of alfalfa without a sufficient water supply aggravates soil water storage deficits, which are not conducive to plant succession. In this study, we studied the above-ground biomass and the degree of soil water storage deficit at different alfalfa stands of different planting ages. The experiment was conducted in six alfalfa grasslands of different ages. Soil water content of the 0-300 cm soil layer in each grassland was measured for the calculation of soil water storage deficit. The results showed that soil water storage increased gradually along the soil profile. The degree of soil water storage deficit was the highest in all six alfalfa grasslands at the depth of 0-150 cm. The deficit degree of the one- and six-year-old alfalfa grasslands was significantly higher than that at the grasslands that had been cultivated for two to five years (P < 0.05) at the depth of 0-100 cm. The deficit degree of the four- and five-year-old alfalfa stands was less than 10% below the depth of 200 cm. The above-ground biomass reached a peak value in grasslands that had been cultivated for three and four years, and then gradually decreased. In summary, based on its relatively high yield and low soil water consumption intensity, the optimal cultivation age for alfalfa grasslands was four years. Thus, irrigation should be increased after five years’ cultivation of alfalfa. Moreover, more water should be supplied to the upper soil layer of one-year-old alfalfa grassland stands. This study provides the basis for water management measures of alfalfa grasslands in arid areas.


英文关键词Alfalfa grassland Planting time Productivity Soil water deficit Groundwater
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000430767300001
WOS关键词LOESS PLATEAU ; SHALLOW GROUNDWATER ; REGION ; MAIZE ; LAND ; PRODUCTIVITY ; DESICCATION ; CONSUMPTION ; ROTATION
WOS类目Agronomy
WOS研究方向Agriculture
来源机构西北农林科技大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209269
作者单位1.Ningxia Univ, China Minist Educ, Key Lab Restorat & Reconstruct Degraded Ecosyst N, Breeding Base State Key Lab Land Degradat & Ecol, Ningxia 750021, Peoples R China;
2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714
Huang, Ze,Liu, Yu,Cui, Zeng,et al. Soil water storage deficit of alfalfa (Medicago sativa) grasslands along ages in arid area (China)[J]. 西北农林科技大学,2018,221:1-6.
APA Huang, Ze.,Liu, Yu.,Cui, Zeng.,Fang, Yan.,He, Honghua.,...&Wu, Gao-Lin.(2018).Soil water storage deficit of alfalfa (Medicago sativa) grasslands along ages in arid area (China).FIELD CROPS RESEARCH,221,1-6.
MLA Huang, Ze,et al."Soil water storage deficit of alfalfa (Medicago sativa) grasslands along ages in arid area (China)".FIELD CROPS RESEARCH 221(2018):1-6.
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