摘要
在7.5万株/hm^2密度下,以等行距(行距60 cm)种植为对照,研究扩行缩株(行距100 cm)种植下春玉米产量、物质积累及转运。结果表明,扩行缩株种植下两年2个品种春玉米产量及穗粒数均显著高于对照;农华101千粒重显著高于对照,伟科702与对照差异不显著。扩行缩株种植下两年2个品种生育后期干物质积累量及积累速率均显著高于对照;茎鞘转运量高于对照,叶片转运量低于对照。成熟期茎鞘和叶片干物质分配比例低于对照,子粒分配比例高于对照。
Under the density of 75 thousand plants/ha, with equal row spacing （row spacing 60 cm） planting as control, research for spring maize yield, dry matter accumulation and transport under widening row spacing and shortening plant spacing（row spacing of 100 cm） planting. The results showed that, the spring maize yield and grain number per ear of two varieties were significantly higher than that of control group under wide row planting for 2 years; the lO00-seed weight of Nonghual01 was significantly higher than that of the control, and no significant dif- ference between the WeikeT02 and the control. Dry matter accumulation and accumulation rate in the late growth stage of two varieties were significantly higher than those in the control group under wide row planting for 2 years. The translocation of stem and sheath was higher than that of control, and leaf translocation was lower than that of control. The proportion of dry matter distribution of stem and sheath in mature stage was lower than that in control group, and the proportion of grain distribution was higher than that of control.
出处
《玉米科学》
CAS
CSCD
北大核心
2017年第3期73-79,共7页
Journal of Maize Sciences
基金
国家科技支撑计划(2013BAD07B04)
内蒙古民族大学校级课题(NMDGP1409)
内蒙古自治区高等学校科学技术研究项目(NJZC13185)
内蒙古自治区硕士研究生科研创新项目(S20161013603)
关键词
春玉米
扩行缩株
物质积累与转运
Spring maize
Widening row spacing and shortening plant spacing
Material accumulation and transportion
