| 重庆市铜梁县粮食生产及耕地压力变化 |
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| 引用本文： | 辜李仁,陈桂斌,刘娜.重庆市铜梁县粮食生产及耕地压力变化[J].农业工程,2014,4(3):89-93. |
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| 作者姓名： | 辜李仁 陈桂斌 刘娜 |
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| 作者单位： | 重庆市地质矿产测试中心，重庆400042 |
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| 摘 要： | 分析粮食自给区县域尺度粮食生产及耕地压力变化，对区域耕地合理利用及保护具有重要意义。以重庆市典型低山丘陵区铜梁县为例，分析了2002—2011年研究区粮食生产及耕地压力变化趋势。结果显示，研究区以农业用地为主，且耕地占农业用地比例大；耕地呈现集中分布趋势，坡度较小的耕地主要分布于中下部，北部耕地坡度较大。10年间耕地总面积和人均耕地面积总体有所减少，但耕地复种指数有所增加，土地垦殖率略有降低；主要粮食作物单产均有所增加，粮食总产量和人均粮食量10年间均表现为先增加后减少趋势。10年间研究区耕地压力指数变化呈现多样性，耕地压力比较明显，耕地资源处于比较紧张状态。未来一定时期内，耕地压力会有所降低，紧张的耕地资源状况将有所缓解。
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| 关 键 词： | 粮食生产 耕地 耕地压力 铜梁县 |
Changes of Cultivate Land Pressure and Grain Product in Tongliang County of Chongqing |
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| Gu Liren,Chen Guibin and Liu Na.Changes of Cultivate Land Pressure and Grain Product in Tongliang County of Chongqing[J].Agricultural Engineering,2014,4(3):89-93. |
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| Authors: | Gu Liren Chen Guibin and Liu Na |
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| Abstract: | Change analysis of cultivated land pressure and grain product on self-sufficiency area county has great significance for the cultivated land protection and rational utilization.Tongliang county，the typical low hilly land of Chongqing，was took as study area.Change of cultivated land pressure and grain product from 2002 to 2011 was analyzed.Results showed that agriculture land was given priority in study area，and arable land accounts for major than other in agricultural land.The cultivated land showed a trend of concentration distribution，and the little gradient cultivated land was mainly distributed in the middle to lower part，but the northern had the bigger gradient.Arable land and per capita cultivated land had presented reduced overall in 10 years，but multi-cropping index was increased，and land reclamation rate was slightly lower.Main food crop yield were increased，and the total grain output and per capita amount of grain were present decreased after increased in 10 years.The change of cultivated land pressure index was diversity in 10 years，cultivated land pressure was more noticeable，and cultivated land resource was in the tight state.The cultivated land pressure will decrease in the future，and stress state of cultivated land resource will be eased. |
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