段晓凤,钱华,李剑萍,马国飞,杨勇,曹宁,张学艺.4种播期下西吉马铃薯气候生产潜力稳定性分析[J].干旱地区农业研究,2011,29(2):266~271
4种播期下西吉马铃薯气候生产潜力稳定性分析
Analysis of the stability of potato climatic potential productivity of four kinds of seeding time in Xiji County of Ningxia
  
DOI：10.7606/j.issn.1000-7601.2011.02.45
中文关键词:  宁夏  西吉县  气候生产潜力  稳定性
英文关键词:Ninqxia  Xiji County  climatic potential productivity  stability
基金项目:国家自然基金项目“气候变化背景下黄土高原优质高产的气候敏感性研究”(40765003)
作者单位
段晓凤 宁夏气象防灾减灾重点实验室,宁夏 银川 750002
宁夏气象科学研究所,宁夏 银川 750002 
钱华 宁夏气象防灾减灾重点实验室,宁夏 银川 750002 
李剑萍 宁夏气象防灾减灾重点实验室,宁夏 银川 750002
宁夏气象科学研究所,宁夏 银川 750002 
马国飞 宁夏气象防灾减灾重点实验室,宁夏 银川 750002
宁夏气象科学研究所,宁夏 银川 750002 
杨勇 山西省忻州气象局,山西 忻州 030002 
曹宁 宁夏气象防灾减灾重点实验室,宁夏 银川 750002
宁夏气象科学研究所,宁夏 银川 750002 
张学艺 宁夏气象防灾减灾重点实验室,宁夏 银川 750002
宁夏气象科学研究所,宁夏 银川 750002 
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中文摘要:
      马铃薯为宁夏西吉县发展经济的支柱产业,为了进一步提高其生产潜力、挖掘农业资源潜力,利用西吉县1988~2009年20 a气象资料,应用潜力递减法,分别估算了西吉县马铃薯4月8日、4月28日、5月18日、6月9日四种播期的气候生产潜力(终止日期分别为各种播期下马铃薯的收获期),并以4月28日播种情况为例分析其与实际产量的关系,年际变化特征,及与各气象要素的关系。结果表明:马铃薯气候生产潜力年际变化较大,但总体变化趋势不明显,表现出极弱的递减趋势;生产潜力与日照关系甚微,日照非区域农业生产的限制因子,气温是马铃薯生长的重要影响因子,气候生产潜力明显偏低于光温生产潜力,减产与水分亏缺变化趋势一致,降水与马铃薯气候生产潜力关系密切,为主要限制因子。播种日期越晚,降水量的越不稳定导致了气候生产潜力的越发不稳定;研究结果可为大力推广马铃薯种植提供宝贵的参考信息和依据。
英文摘要:
      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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