土壤与作物Issue(3)：93-98,6.DOI:10.11689/j.issn.2095-2961.2014.03.002
种植密度对春玉米茎秆和根系水分状况的影响
Effect of Planting Density on Water Contentof Stalk and Root in Spring Maize
摘要
Abstract
Competition is increased for water sources with the increase of planting density in maize .This study investigates the effect of planting density on the water content of stalk and root.A field experiment based on a spring maize variety and three planting densities ( LD:4.50 ×10 4 plant· hm -2, MD :6.75 ×10 4 plant· hm-2 and HD:9.00 ×10 4 plant· hm-2 ) was carried out.The result showed that there was a minor effect from planting densities on the water content of stalk in earlier stages , whereas there was a greater effect of planting densities on the water content of stalk in later stages.The average water content of nodal root from the 5th to 7th layers under MD took the first place , which under HD took the second place and which under LD was lowest.The average relative water content of nodal root from 1st to 4th layers under LD took the first place , which under MD took the second place and which under HD was lowest , whereas that of nodal root from 5th to 7th layers under MD took the first place , which under LD took the second place and which under HD was lowest.关键词
春玉米/种植密度/含水量/相对含水量Key words
spring maize/planting density/water content/relative water content分类
农业科技引用本文复制引用
刘胜群,郭金瑞,张卫建,任军,宋振伟,阎孝贡,宋凤斌,朱先灿..种植密度对春玉米茎秆和根系水分状况的影响[J].土壤与作物,2014,(3):93-98,6.基金项目
国家自然科学基金项目（31000690），吉林省科技发展计划项目 （）
