摘要
以木兰县29块中低产田为研完样本,采取主成分分析的方法,从13个变量指标中选择出7个影响中低产田的主要因素,在此基础上,用系统聚类方法将全郜地块划分两类,结合生产实际剖析了分类结果,提出了相应的治理改造对策,对中低产田分类治理提供了新的方法和依据。
The research fieldds sample were selected from 29 middle and low yield fields in Mulan county. We used the method of main elements analysis and adopted 7 main factors which. in-flenced its yield from 13 variates. furthes, divided all those fields into 2 kinds with the method of hicrachical claster. On the dissected again through the farm production, We puted forward acorre-sponding strategy of administer and remake the middle and low yield fields that may be a basis and a new mothed.
出处
《农业系统科学与综合研究》
CSCD
北大核心
1997年第3期207-209,共3页
System Sciemces and Comprehensive Studies In Agriculture
关键词
中低产田
限制因素
主成分分析
分类治理
Middel and low yield fields, Limiting factor. Main element analysis, Hierachical claster, Cassified administer