Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China
Abstract
:1. Introduction
2. Methods and Materials
2.1. Study Area
2.2. Experimental Design
2.3. Data Analyses
2.4. Statistical Analyses
3. Results
3.1. Precipitation and Duration (in Days and Thermal Time) at Different Potato Growth Stages
3.2. Potato Yield
3.3. Water Use Efficiency (WUE)
3.4. Leaf Area Index and Dry Mass
3.5. Flexible Sowing Date
4. Discussion
4.1. Impact of Sowing Date on Potato Growth, Development and Yield
4.2. Flexible Sowing Time and Optimal Sowing Time
4.3. Climate Change
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Years | Treatments | Sowing Date | Harvesting Date | Years | Treatments | Sowing Date | Harvesting Date |
---|---|---|---|---|---|---|---|
2010 | D1 | 28 April | 27 August | 2012 | D1 | 26 April | 26 August |
D2 | 8 May | 8 September | D2 | 6 May | 10 September | ||
D3 | 18 May | 10 September | D3 | 16 May | 10 September | ||
D4 | 28 May | 16 September | D4 | 26 May | 10 September | ||
D5 | 8 June | 20 September | D5 | 31 May | 10 September | ||
2011 | D1 | 26 April | 22 August | 2013 | D1 | 26 April | 25 September |
D2 | 6 May | 2 September | D2 | 6 May | 25 September | ||
D3 | 16 May | 4 September | D3 | 16 May | 25 September | ||
D4 | 26 May | 8 September | D4 | 26 May | 25 September | ||
D5 | 5 June | 9 September | D5 | 31 May | 25 September |
Years | D1 | D2 | D3 | D4 | D5 | |
---|---|---|---|---|---|---|
Total yield (ton/ha) | 2010 | 13.7b (0.5) | 16.7ab (0.9) | 20.9a (1.4) | 21.1a (0.6) | 20.1a (2.3) |
2011 | 18.1a (2.8) | 22.4a (0.9) | 24.8a (2.7) | 20.5a (1.5) | 18.5a (1.7) | |
2012 | 19.6ab (0.4) | 18.3b (1.0) | 19.5ab (1.4) | 21.9a (0.7) | 21.1ab (1.4) | |
2013 | 31.6a (1.4) | 24.4b (1.5) | 30.7a (1.0) | 31.6a (1.2) | 21.6b (1.0) | |
Mean | 20.8 | 20.7 | 24.0 | 23.9 | 20.3 | |
Marketable yield (ton/ha) | 2010 | 11.1b | 13.4ab | 15.8ab | 16.6a | 15.7ab |
2011 | 13.3bc | 17.8ab | 20.4a | 13.3bc | 11.3c | |
2012 | 13.3a | 8.8c | 10.6abc | 10.7abc | 12.6ab | |
2013 | 19.9a | 14.1b | 18.1ab | 21.3a | 9.6c | |
Mean | 14.4 | 13.5 | 16.2 | 15.5 | 12.3 | |
Ratio of marketable yield to total yield (%) | 2010 | 81.04 | 80.67 | 75.14 | 78.53 | 77.70 |
2011 | 80.01 | 79.36 | 82.40 | 65.23 | 61.04 | |
2012 | 67.90 | 48.49 | 54.03 | 48.78 | 59.68 | |
2013 | 62.65 | 57.94 | 59.29 | 67.66 | 44.92 | |
Mean | 72.90 | 66.62 | 67.72 | 65.05 | 60.84 |
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Hu, Q.; Yang, N.; Pan, F.; Pan, X.; Wang, X.; Yang, P. Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China. Sustainability 2017, 9, 615. https://doi.org/10.3390/su9040615
Hu Q, Yang N, Pan F, Pan X, Wang X, Yang P. Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China. Sustainability. 2017; 9(4):615. https://doi.org/10.3390/su9040615
Chicago/Turabian StyleHu, Qi, Ning Yang, Feifei Pan, Xuebiao Pan, Xiaoxiao Wang, and Pengyu Yang. 2017. "Adjusting Sowing Dates Improved Potato Adaptation to Climate Change in Semiarid Region, China" Sustainability 9, no. 4: 615. https://doi.org/10.3390/su9040615