ACTA AGRICULTURAE BOREALI-SINICA ›› 2008, Vol. 23 ›› Issue (S1): 163-166. doi: 10.7668/hbnxb.2008.S1.040

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The Assessment on Influence of Drought to Yield of Crop in East and Southeast of Gansu

PU Jin-yong1, ZHANG Cun-jie2, ZHAO Hong-yan2, YAO Xiao-ying3   

  1. 1. Lanzhou Institute of Arid Meteorology,China Meteorological Administration,Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province,Lanzhou 730020,China;
    2. The Agrometeorological Experiment Station of Tianshui,Tianshui 741020,China;
    3. Lanzhou Regional Climate Center,Lanzhou 730020,China;
    4. The Tianshui Meteorological Bureau,Tianshui 741000,China
  • Received:2007-11-18 Published:2008-12-31

Abstract: The drought is main disaster which affects yield of crops in southeast and east Gansu. One of the arid researchwork goal is to appraise the influence of drought to grain production and estimate the risk degree of crops planting.Based on date of yield of crops at 4 cities and the meteorological date in Southeast and East Gansu in 1981- 2006, the characteristics of drought and the degree of reduct ion of wheat and corn output had been analyzed with mathematical statistic method and the methods of assessment and the risk coefficient had been set up. The results showed that the drought in the East of Gansu is serious than the Southeast of Gansu in that the spring drought is frequently in Qingyang city, the early summer drought is frequently in Pingliang city, the hot summer drought is frequently in Tianshui city. The degree of risk in planting wheat is high than in planting corn. The biggest risk in planting wheat area is Pingliang city,then Qingyang city, last Longnan city.The biggest risk in planting corn area is Qingyang city, then Pingliang city, lastLongnan city.

Key words: Drought, East and Southeast of Gansu, Grain, Output, Assessment

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Cite this article

PU Jin-yong, ZHANG Cun-jie, ZHAO Hong-yan, YAO Xiao-ying. The Assessment on Influence of Drought to Yield of Crop in East and Southeast of Gansu[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 163-166. doi: 10.7668/hbnxb.2008.S1.040.

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