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中文摘要：
为了充分发挥红壤旱地的生态功能，筛选出较优化的玉米种植系统，本研究依据近23a（1984～2006）的田间试验资料，从农田生态系统的生产功能、能流功能、价值流功能以及用养结合功能等四个方面对红壤旱地15种玉米种植系统进行了分析，并采用灰色关联度法从生态效益、经济效益和社会效益三个层次13个指标对各种植模式进行综合评价，筛选出了3种适宜于在红壤旱地上推广的较优化的玉米种植系统。结果表明，处理（10）“豌豆／早玉米＋早稻／晚玉米”的社会效益和生态效益关联度值分别为0．750和0．986，均居第一位，其经济效益关联度值为0．841，居第二位，经灰色关联度分析，得出其综合加权关联度值最大，是最适宜在南方红壤旱地上推广的优化种植模式。处理（12）“紫云英-早玉米-芝麻”和处理（11）“豌豆／棉花＋早玉米”的加权关联度值也较大，分别为0．739和0．716，居第二位和第三位，这两种种植模式对今后红壤旱作区种植业结构布局和种植方式的优化具有积极意义。
英文摘要：
To bring ecological functions of upland red soil into full play and screen out better maize cropping systems, a study was carried out making full use of the data accumulated in the recent 23 years of field experiments and analyzing production, energy flow, value flow and integrated utilization/cultivation functions of 15 different maize cropping systems in the soil. Comprehensive evaluation of the cropping systems was performed on the basis of 13 indexes of ecological benefit, economic benefit and social benefit by means of Grey relation degree. Three maize cropping systems were screened out to be optimal and fit for extension on upland red soil. Results shows that the grey relation degree of the ecological benefit and social benefit of Treatment X （ pea/early maize ＋ upland rice/late maize） reached 0. 750 and 0. 986, respectively, ranking first among the 15 and of economic benefit got to 0. 841, ranking second. And the treatment was the highest in weighed grey relation degree and hence assumed to be the priority system for extension in the red soil regions in South China. Treatment XI （pea/cotton ＋ early maize） and Treatment XII （Chinese milk vetch-early maize-sesame） followed, being 0. 739 and 0. 716 in weighed grey relation degree, and would have important roles in optimizing the cropping systems in the upland red soil.
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