晋中晚熟冬麦区不同群体模式小麦光合性能分析

Photosynthetic Capacity Analysis of Different Population Pattern in Winter Wheat in Jin-zhong Late-maturing Winter Wheat Region

近年来随着北方晚熟冬麦区育成品种产量结构与株型矮化的转变 ,传统依靠高播量多穗数的栽培方式 ,不能充分发挥新品种的穗重潜力。在高产栽培条件下 ,特别是有机肥充足的条件下 ,采用矮秆重穗型品种 ,实行半精量播种 ,同样可以获得高产。其群体具有较高的冠层光合面积与较强的光合能力。优质充足的有机肥有利于促进延长群体光合时间 ,使落黄熟相好 ,可充分发挥个体穗粒重的潜力 ,避免高产群体的早衰。

Recently with the yield structure changes and plant height shorten for the cultivars in north late-mature winter wheat region,it could not develop sufficiently the potential of ear-weight of new cultivar with the conventional cultivation pattern depending on more sowing quantity and more numbers of ears. In the condition of high yield cultivation,especially with enough organic fertilizer, short-stem and heavy-ear cultivar and precision sowing could be used to get high yield. The high yield population was with higher photosynthesis area and ability, especially high quality and abundant organic fertilizer was more benefit to prolonging population photosynthesis time, developing sufficiently ear-weight potential of individual, and avoiding premature senescence in high yield population.