| Analysis of the stability of potato climatic potential productivity of four kinds of seeding time in Xiji County of Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2011.02.45 |
| Key Words: Ninqxia Xiji County climatic potential productivity stability |
| Author Name | Affiliation | | DUAN Xiaofeng | Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002，China
Ningxia Institute of Meteorological Sciences ，Yinchuan, Ningxia 750002，China | | QIAN Hua | Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002，China | | LI Jianping | Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002，China
Ningxia Institute of Meteorological Sciences ，Yinchuan, Ningxia 750002，China | | MA Guofei | Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002，China
Ningxia Institute of Meteorological Sciences ，Yinchuan, Ningxia 750002，China | | YANG Yong | Xinzhou Meteorological Bureau, Xinzhou, Shanxi, 030002，China | | CAO Ning | Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002，China
Ningxia Institute of Meteorological Sciences ，Yinchuan, Ningxia 750002，China | | ZHANG Xueyi | Ningxia Key Laboratory for Meteorological Disaster Prevention and Reduction, Yinchuan, Ningxia 750002，China
Ningxia Institute of Meteorological Sciences ，Yinchuan, Ningxia 750002，China |
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| Abstract: |
| Potato is the economic pillar industry in Xiji County of Ningxia. In order to enhance its potential produc-tivity，and tap the potential of agricultural resources, potential production of four kinds of potato planting (April 8，April 28, May 18 and June 9)were estimated with potential diminish method based meteorological data of 1988~ 2009. The relationship of potential productivity (April 28) and actual production, annual variations， as well as its relationship with meteorological factors were analyzed. The results shows that:the inter anmual changes of potato climatic potential produc-tivity changed greatly， but the overall trend was not obvious and showed weak decreasing; the relationship between poten-tial production and sunshine was very lttle, and sunshine was not the limiting factor for regional agricultural production; temperature was an important factor in affecting the Xiji potato yield; the climatic potential productivity，which cut in line with the trend of water deficit， is significantly lower than the photo temperature potential productivity; and precipitation was the main limiting factor to restrict potato production. The later planting dates (which was led to by more unstable fainfall) were, the more unstable climate potential productivity was. The results can provide valuable reference and a basis for popularizing potato planting. |
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