| Effects of planting density on water consumption and yield of foxtail millet under ridge-furrow rainfall harvesting planting mode |
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| DOI：10.7606/j.issn.1000-7601.2016.02.13 |
| Key Words: ridge-furrow rainfall harvesting planting mode foxtail millet planting density WUE |
| Author Name | Affiliation | | LIU Qi | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China | | JIA Zhi-kuan | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China | | LIAN Yan-hao | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China | | ZHANG Xu-dong | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China | | REN Xiao-long | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China | | WANG Jun-peng | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China | | HAN Qing-fang | Chinese Institute of Water-saving Agriculture, Northwest A&F University, Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| In order to explore the yield potential of foxtail millet under different planting densities, cv.Datong 29 was field tested in semi-arid southern Ningxia province in 2013 and 2014, and three planting densities were set under the ridge-furrow rainfall harvesting planting mode. The results showed that water consumption, yield and WUE were all enhanced with the increase of density in both years. Water consumption was reduced in 2014 when amount of precipitation was decreased and the difference between yields by middle and by high densities was not significant (P>0.05). In both years, water supply capacity at harvesting stage, soil water storage of 0～200 cm underground and soil moisture during jointing stage became all decreased with the increase of density. With the increase of planting density, WUE in 2013 with high precipitation was gradually increased; while in 2014 with low precipitation, WUE by middle density was the highest, reaching 24.35 kg·mm-1·hm-2. Average WUE in 2014 had a gain of 10.37 kg·mm-1·hm-2 from that in 2014. |
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