论文部分内容阅读
本研究以晋中地区的地理、气候等生态因子的调查资料及主栽杨树品种的生长调查材料为依据，应用星座图聚类法将该地区划分为５个栽培区：Ⅰ．平川温暖干旱区；Ⅱ．平川东部丘陵温和干旱区；Ⅲ．东山丘陵温和半干旱区；Ⅳ．低山温凉半湿润区；Ⅴ．中山温寒湿润区。同时，用生产上常用种北京杨，对各栽培区生产力差异等进行显著性检验与分析，说明Ⅲ区是杨树生长的最适宜地区，Ⅳ、Ⅰ区次之，Ⅱ、Ⅴ区居后。应用星座图聚类法作杨树栽培区划，使分区建立在数学的基础上，模型化，直观化，进而科学地解决了杨树丰产品种的布局及良种栽培的优化选择问题
Based on the survey data of ecological factors such as geography and climate in Jinzhong area and the growth survey materials of main poplar varieties, this study divides the area into five cultivated areas using constellation clustering method: Ⅰ. Hirakawa warm arid area; Ⅱ. Hilly plain eastern hilly area; Ⅲ. Dongshan hills mild semi-arid area; Ⅳ. Low mountain cool and humid area; Ⅴ. Zhongshan warm and humid area. At the same time, the common production of Beijing Yang, the cultivation of different productivity differences between the significant test and analysis, indicating that Ⅲ is the most suitable area for poplar growth, Ⅳ, Ⅰ followed by Ⅱ, Ⅴ area behind. Application of constellation clustering method for poplar cultivation zoning, so that the district based on mathematical modeling, visualization, and thus scientifically solve the layout of poplar varieties and optimization of the selection of cultivars