基于主成分分析法的牧草不同套种模式综合效益评价

Comprehensive Benefit Evaluation of Forage Intercropping Patterns Based on the Principal Component Analysis Method

依据呼和浩特市郊区牧草套种田间试验提供的参数,对苜蓿套种玉米的4种不同组合模式,在进行产量性状、经济效益和水效益比较的基础上,运用主成分分析方法,对综合效益进行了全面系统的评价。结果表明,4行玉米套8行苜蓿的组合模式,在节约灌溉水的前提下实现了草、料高产,并且水分、能量利用效率高,经济效益好,综合效益显著,可作为内蒙古中部乃至西北牧区发展灌溉饲草料地的主要种植模式进行推广。

Based on the grass field in the outskirts of Hohhot , this paper compares yield and water use efficiency, economic benefit of alfalfa intercropping corn in 4 different combinations of patterns, and makes a comprehensive and systematic evaluation of comprehen- sive benefits by using principal component analysis method of alfalfa intercropping corn in 4 different combinations of patterns. The results show that combination mode of 4 lines of maize interplanting 8 lines of alfalfa can realize high yield of grass and forage in the premise of saving water,and get remarkable comprehensive benefits.