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| DOI： |
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| Impact of Waterlogging at the Flower-pod Stage on Growth and Yield of Soybean |
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YUAN Hongwei, YUAN Xianjiang, TANG Guangmin, YANG Jiwei
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Key Laboratory of Water Conservancy and Water Resources of Anhui Province, Bengbu 233000, China;Water Resources Research Institute of Anhui Province and Huaihe River Commission, Ministry of Water Resources, Bengbu 233000, China
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| Abstract: |
| We studied the impact of waterlogging at flower-pod stage on physiological traits and yield of soybean grown in a lysimeter in attempts to improve drainage management of soybean fields. The results showed that the number of pods, weights of 100-pellets and yield of the soybean decreased due to waterlogging, and that the relative yield was negatively related to accumulated depth of waterlogging (R=0.948 9). Reduction in soybean yield increased with prolonged duration of waterlogging. To sustain growth and yield of soybean, therefore, the groundwater table should be dropped to below 30 cm of depth in 5 days after waterlogging occurred. |
| Key words: accumulated waterlogging depth; soybean; flower-pods |
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