摘要
为研究不同种植方式对夏玉米苗期—灌浆期干物质积累过程的影响程度,选取鲁单981为试验材料,设置了双行交错种植、双行平行种植、单行平行种植3种种植方式,分别在玉米出苗后17 d、拔节期、抽雄期、吐丝期、散粉期、灌浆期取样,分析了根、茎、叶、叶鞘、全株的干物质积累过程,建立了大田条件下鲁单981全株及各器官干物质积累的数学方程,并对其进行了检验。结果表明:种植方式对全株及各器官干物质积累动态的影响程度差异很大,在相同生育时期,以双行交错种植的玉米干物质积累较多;对全株、根、茎、叶、叶鞘5个器官建立的数学模型,其方程参数之间存在一定的相关关系;不同种植方式下不同器官干物质积累数学模型也有所不同。
Using maize Ludan 981 as the material, the effects of different planting patterns on the dry matter accumulation from seedling stage to grain filling stage were studied. The mathematical equations of dry matter accumulation of whole plant and each organ under field condition were established and tested. The results showed that there were significant differences in the effects of planting patterns on the dry matter accumulation. The dry matter accumulation of the pattern of staggered double rows was more at the same growth period. The equation parameters of whole plant, root, stem, leaves, and sheath had certain correlation. The mathematical models of dry matter accumulation of different organs under different planting patterns were different.
出处
《河北农业科学》
2011年第11期5-8,共4页
Journal of Hebei Agricultural Sciences
基金
国家"十二五"科技支撑计划项目(2011BAD32B02)
关键词
种植方式
玉米
干物质
数学方程
模型参数
Planting pattern
Maize
Dry matter
Mathematical equation
Model parameters
