The study was conducted to evaluate 12 traits of 15 hybrid maize culti- vars using multi-factor comprehensive appraisal. The results showed that Xianyu 335, ND8 and ND2 were better than other cultivars in these agrono...The study was conducted to evaluate 12 traits of 15 hybrid maize culti- vars using multi-factor comprehensive appraisal. The results showed that Xianyu 335, ND8 and ND2 were better than other cultivars in these agronomic traits. Multi- factor comprehensive appraisal with simple computing, comprehensive and reason- able results is suitable to be used for evaluating the performance of hybrid maize cultivars in field.展开更多
基于GIS(geographic information system)技术,提出了一种新的土地影响因子单元级别划分方法———路径距离分析法,该方法综合考虑了地形起伏和河流等“障碍”,增加了“桥头堡”效应,提高了影响因子单元定级的合理性,同时免去了传统方...基于GIS(geographic information system)技术,提出了一种新的土地影响因子单元级别划分方法———路径距离分析法,该方法综合考虑了地形起伏和河流等“障碍”,增加了“桥头堡”效应,提高了影响因子单元定级的合理性,同时免去了传统方法中的修正体系,极大提高了土地定级的效率。并以陕西省延安市某县城区土地定级为例,利用特尔斐法确定影响因子和各因子的权重,利用ArcGIS的路径距离分析法划分影响因子的单元级别,通过多因素综合法叠加得出土地定级图。实验表明,路径距离分析法的土地定级更加合理,可用于城镇基准地价评估。展开更多
基金Supported by the Fund of Development and Industrialization of New Maize Cultivar 702(131100110100)~~
文摘The study was conducted to evaluate 12 traits of 15 hybrid maize culti- vars using multi-factor comprehensive appraisal. The results showed that Xianyu 335, ND8 and ND2 were better than other cultivars in these agronomic traits. Multi- factor comprehensive appraisal with simple computing, comprehensive and reason- able results is suitable to be used for evaluating the performance of hybrid maize cultivars in field.
文摘基于GIS(geographic information system)技术,提出了一种新的土地影响因子单元级别划分方法———路径距离分析法,该方法综合考虑了地形起伏和河流等“障碍”,增加了“桥头堡”效应,提高了影响因子单元定级的合理性,同时免去了传统方法中的修正体系,极大提高了土地定级的效率。并以陕西省延安市某县城区土地定级为例,利用特尔斐法确定影响因子和各因子的权重,利用ArcGIS的路径距离分析法划分影响因子的单元级别,通过多因素综合法叠加得出土地定级图。实验表明,路径距离分析法的土地定级更加合理,可用于城镇基准地价评估。