摘要
本文从分析太谷、应县二地在小麦生育期间的气温差异入手,通过对冬麦北移主栽品种“北移一号”在原种植地与北移区二地生育差异的比较分析,表明冬麦北移后生育期表现为“三短两长”的特点,致使“三段生长”的营养生长有效期极大地缩短,营养生长至生殖生长的过渡期也相应缩短,而生殖生长期明显延长,导致了株高降低、节间变短变细变实、强度明显提高,虽然分蘖成穗很少,单株绿色营养面积也很小,但在较高的水肥与合理密植条件下,由于粒重高,经济系数高,仍可获得高产。
This paper analyzed the temperature difference between Taigu and Yingxian during the wheat growth period and growth difference of winter wheat No.1 Beiyi between in original plant area and north area.Results showed that the growth period of winter wheat is 'three long and two short' after the breed of wheat moving to north.So nutrimental period of three sections of growth reduce enormously,transition period from nutrition to procreation growth reduce correspondingly,procreation growth period lengthen obviously.Stem height fall and distance of knar shorten and intensity enhance obviously.Although number of tillering and becoming fringe reduce and green alimentation area of single plant also very small, but in conditions of higher moisture and fertilizer and reasonable close planting,the economical coefficient is high because of weight of grain is high,high production still might be obtained.
出处
《山西气象》
2003年第3期12-14,46,共4页
Shanxi Meteorological Quarterly
关键词
冬麦北移
生育差异
产量结构
winter wheat moving north
growth difference
output constitution
