应用聚类分析法划分重庆玉米种植区研究

Studies on Dividing Corn-growing Region by Cluster Analysis

应用聚类分析法,根据重庆市2006年和2007年2年共19个点次试验、13个玉米单交种的产量和株高性状表现,将重庆市的玉米种植区划分为6类.第1类包括丰都、涪陵、长寿、南川、潼南;第2类为合川;第3类为江津;第4类为万州;第5类为酉阳;第6类为黔江.其分类结果与按地理位置分类结果基本一致,说明根据玉米自身的重要性状表现,应用聚类分析法进行种植区划是一种经济、实用、准确的方法,可为玉米生产、引种和区域试验提供科学依据.

The corn-growing region of Chongqing is divided into six parts by cluster analysis according to the performance of yield and plant height of thirteen single hybrids in the trials of 2006 and 2007. The first part includes Fengdu, Fuling, Changshou, Nanchuan and Tongnan. The other five parts are Hechuan, Jiangjin, Wanzhou, Youyang and Qianjiang, respectively. The dividing result is generally accordance with the dividing result by geographical position. This showed that dividing corn-growing region by clustering analysis according to the performance of important plant traits is economical, practical and accurate, and can provide scientific basis for corn production , corn variety introduce and corn area trials.