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Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China

CHENG Yeqing ZHANG Pingyu ZHANG Huimin

CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. 中国地理科学, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1
引用本文: CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. 中国地理科学, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1
CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. Chinese Geographical Science, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1
Citation: CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. Chinese Geographical Science, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1

Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China

doi: 10.1007/s11769-007-0110-1
基金项目: Under the auspices of the National Natural Science Foundation of China (No.40601027)
详细信息
    通讯作者:

    CHENG Yeqing.E-mail:yqcheng@neigae.ac.cn

Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China

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出版历程
  • 收稿日期:  2006-04-22
  • 修回日期:  2007-01-10
  • 刊出日期:  2007-06-20

Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China

doi: 10.1007/s11769-007-0110-1
    基金项目:  Under the auspices of the National Natural Science Foundation of China (No.40601027)
    通讯作者: CHENG Yeqing.E-mail:yqcheng@neigae.ac.cn

摘要: Based on the surveys and the statistic data during 1980–2003, the variation character of grain yield per unit area in Northeast China and its main factors have been discussed by the methods of statistics and grey correlation analysis. The results show that: 1) the grain yield per unit area has been taking on an increasing trend in the recent 20 years. It increased from 2519.80kg/ha in 1980 to 4216.11kg/ha in 2003, with an increasing rate of 67.32%; 2) the variation of grain yield per unit area is considerably prominent and its range is also very great, with the maximal increase rate of 42.59% and maximal decrease rate of 21.13%, respectively, which are far above the whole Chinese average level; 3) the variation of main crops' yield per unit area is remarkable, which takes on the character that the yield of corn is much higher than that of soybean and rice; and 4) the grey correlation analysis shows that the most important factors impacting the variation of grain yield per unit area are the total power of agricultural machinery, the consumption of chemical fertilizer and effective irrigated area. However, the influence of natural disaster and income level should not be ignored. Effective ways to improve grain yield per unit area are to construct farmland improvement groundwork, reclaim the middle-and low-yield farmland, etc.

English Abstract

CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. 中国地理科学, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1
引用本文: CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. 中国地理科学, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1
CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. Chinese Geographical Science, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1
Citation: CHENG Yeqing, ZHANG Pingyu, ZHANG Huimin. Variation Character of Grain Yield per Unit Area in Main Grain-producing Area of Northeast China[J]. Chinese Geographical Science, 2007, 17(2): 110-116. doi: 10.1007/s11769-007-0110-1

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