作物学报2012，Vol.38Issue(1)：80-85,6.DOI:10.3724/SP.J.1006.2012.00080
近年我国玉米超高产田的分布、产量构成及关键技术
Distribution, Yield Structure, and Key Cultural Techniques of Maize Superhigh Yield Plots in Recent Years
摘要
Abstract
Maize high-yield potential and small-area super-high yield researches were conducted in different areas in 2006-2010. The geographical distribution, yield components, and key cultivation techniques of 159 maize super-high yield plots with yield higher than 15 000 kg ha-1 were analyzed. Most high-yield plots were distributed in high latitude (40°-43°N) and high elevation regions (1000-1500 m) with abundant sunlight and high temperature in daytime and low temperature during night. These conditions were primary factors for super-high yield of maize. The cultivars with super-high yields had the average yield of 16 692 kg ha"1 with 88 950 ears ha"1, 541 kernels per ear, 1000-kernel weight of 360.0 g, and ear weight of 191.8 g. According to the result of path analysis, the ear and kernel numbers were significantly correlated with kernel yield. The key techniques for maize high-yielding cultivation included selection of cultivars with tolerance to high density, reasonable dense planting, abundant sup-plies of water and fertilizer, proper filed management, and film mulching.关键词
玉米/超高产/产量结构/栽培技术Key words
Maize/ High-yield plot/ Yield structure/ Cultivation technology引用本文复制引用
陈国平,柳京国,李潮海,王永宏,王友德,宋慧欣,赵久然,高聚林,赵明,董树亭,李少昆,杨祁峰,刘永红,王立春,薛吉全..近年我国玉米超高产田的分布、产量构成及关键技术[J].作物学报,2012,38(1):80-85,6.基金项目
本研究由国家玉米产业技术体系项目(nycytx-02)和北京农业育种基础研究创新平台建设Ⅱ期项目(D08070500690802)资助. （nycytx-02）
