不同株叶型冬小麦生长动态分析

Growth Dynamic Analysis of Leaf and Plant Types in Winter Wheat

选用近3年参加国家和山西省区试的54个冬小麦品种,将其按株型紧凑与否,分为叶片直立、叶片半直立和叶片下披3类。在一般生产条件下,对这3种类型品种的产量结构、茎蘖动态、光合结构、叶面积、干物质积累和抗逆性等进行了研究。结果表明,在一定的生产环境和相应的栽培技术条件下,3种类型的品种都能获得高产,但在目前生产条件下,以直立型、半直立型品种较为经济,且易获得高产、稳产。

Fiftyfour winter wheat varieties in HuangHuai and Shanxi regional trial, were grouped to three types, depending on their leaves compaction or not. These three types were upstanding leaf, semiupstanding leaf and downward leaf respectively. Under ordinary production conditions, yield structure, stem and tiller dynamic, photosynthetic structure, leaf area, dry matter accumulation and resistance to adversity of these three types varieties were studid. Result showed that, under certain yielding environment and corresponding cultural practices conditions, all these types can get high yield, But under presently yielding conditions, upstanding leaf type and semiupstanding leaf type are more economic and can get higher and stable yield more eaeily than downward leaf type. 