摘要
依据田间试验提供的参数，对小麦套种玉米的７种不同组合模式，在进行产量性状、经济效益、能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评价。结果表明，覆膜穴播小麦套种露地撮种玉米和覆膜穴播小麦套种露地等株距玉米两种组合模式，在节约农田用水的前提下实现了麦、玉两作双高产，水分利用效率高，经济效益好，能量转换效益大，综合效益显著，应作为宁南山区灌溉农田乃至西北灌区发展节水、高产、高效种植业和建设吨粮田的主体模式予以大力推广。
ccording to the data obtained through field experiment,an overall systematic evaluation was made on the comprehensive benefits of 7 different combinative patterns of interplanting of wheat and corn on the basis of analysis on yield trait,economic benefit,energetic benefit and water benefit.The results show that two combinative patterns:mulch bunch planting of wheat interplanted with clusteredly planted corn in the open and mulch bunch planting of wheat interplanted with equidistant spacing corn in the open ,which achieved high yield of both wheat and corn while irrigation water was saved,have the characteristics of high water utiluzation efficiency,good economic benefit,high energetic transformation benefit and significant comprehensive benefit,should be disseminated widely as main patterns for developing high yield,high efficiency and water-saving planting and construction of farmland with a yield of over 15,000 kg/ha in irrigated farmland in southern mountainous area of Ningxia and even in irrigation area in northwest China.
出处
《宁夏农林科技》
1998年第1期1-6,共6页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
小麦
玉米
综合模式
覆膜穴播
套作
综合效益
Interplanting of Wheat and corn
Combinative pattern
Mulch bunch planting
Clusteredly planting
Main component analysis.
