| Influence of groundwater depth on yield and WUE of winter wheat and spring maize |
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| DOI：10.7606/j.issn.1000-7601.2011.01.05 |
| Key Words: groundwater depth yield WUE winter wheat spring maize |
| Author Name | Affiliation | | LIU Zhandong | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, He'nan 453003, China | | XIAO Junfu | Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, He'nan 453003, China | | NIU Haozhen | Fenhe Irrigation Administrative Bureau, Taiyuan, Shanxi 030002, China | | JIA Yunmao | Fenhe Irrigation Administrative Bureau, Taiyuan, Shanxi 030002, China |
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| Abstract: |
| The growth indicators, yield, yield components and water use efficiency (WUE) of winter wheat and spring maize were investigated under different groundwater depth by using drainable lysimeter. The results showed that different groundwater depth had little influence on 1000-grian weight of winter wheat and spring maize. They had significant effect (P=0.05) on dry matter weight of winter wheat. When groundwater depth was more than 1.0m, the planting density, tiller number, spike number, grains per spike of winter wheat and the plant height, spike heigth, ear weight per plant of spring maize increase
d significantly. Analysis of experimental data of many years (2002～2006) indicated that the yield and WUE of winter wheat increased with groundwater depth inc
reasing; when groundwater depth was 0.5 m, the yield of spring maize got to the highest value (8 262.0 kg/hm2), while WUE was the lowest (0.97 kg/mm). When groundwater depth was 1.5 m, the WUE was highest (1.44 kg/mm), while the yield of spring maize (7 221.0 kg/hm2) was lower than the highest value. According to the double target of improving the yield and WUE, the suitable groundwater d
epth for winter wheat and spring maize were 1.5 m and 1.0 m below respectively in Fenhe Irrigation District. The results obtained from the paper would be helpfu
l to the study of water-saving irrigation design and effective irrigation management of winter wheat and spring maize. |
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