| 摘要: |
| 分析天水市近30年来作物种植结构的变化特征及粮食产量的变化，利用灰色关联度分析方法探讨了粮食生产的影响因素，定量分析了粮食产量与影响因素的关联程度。结果表明:天水市作物种植结构发生了明显的变化;粮食产量变化的总体特征为波动中呈上升趋势;粮食单产、总人口、水平梯田、耕地面积、粮食面积和保灌面积等是粮食生产的主要驱动因子。 |
| 关键词: 种植结构 粮食生产 灰色关联分析 天水市 |
| DOI：10.7621/cjarrp.1005-9121.20120407 |
| 分类号: |
| 基金项目:甘肃省自然科学基金项目，天水市科技研究计划项目。 |
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| CHANGE OF CROP PLANTING STRUCTURE AND INFLUENCE FACTORS OF GRAIN YIELD |
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Gao qiang, Guo heng, Zhao guoliang, Wang juan, Wen hongchang, Zhao chunyan
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Institute of Agriculture Sciences of Tianshui， Tianshui， Gansu 741000
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| Abstract: |
| Nearly 30 years of crop planting structure change characteristics and food production change in Tianshui city were discussed in this paper， a gray correlation degree analysis method was used for analyzing the influencing factors of grain production. The results indicated that crop planting structure showed obvious change in Tianshui， the general characteristics of grain production change showed a fluctuate ascendant trend， and the main factors im- pacting the food production included grain yield per hectare， population， level terrace， arable land， grain area and irrigation area， etc. |
| Key words: planting structure food production grey correlation analysis Tianshui |
