光合源限制对冬小麦茎杆干物质转运的影响.docVIP

摘要：小麦是人类的主食之一，也是世界上分布很广、栽培面积最大的粮食作物之一。随着小麦耕种面积的不断减少以及人们越来越多的需求，提高小麦产量成为目前主要措施之一。为提高小麦产量，应从形成小麦产量机理来进行研究。采用剪摘叶片、包穗等方法研究探讨了光合源限制对小麦茎杆干物质转运及其对籽粒产量构成的影响，主要研究内容包括：（1）穗光合限制对小麦茎杆贮藏物质积累与转运的影响。（2）叶光合限制对小麦茎杆贮藏物质积累与转运的影响。（3）穗光合对籽粒及其产量构成因素的影响。（4）叶光合对籽粒及其产量构成因素的影响。主要研究目的是探讨小麦不同光合器官对籽粒茎杆物质积累与转运的影响，明确叶片及非籽粒器官对产量及其构成因素的贡献，以期为小麦栽培与育种提供参考，为小麦超高产提供理论依据和技术支撑。通过研究得出的主要研究结论是:明确了小麦光合源的构成；了解小麦不同光合器官对穗粒中的贡献基本程度；研究小麦不同器官在整个生育期间光合效率变化以及差异。本试验以6个不同类型的小麦品种为材料，通过对其剪叶、剪芒、包茎、包穗等不同处理，研究光合源限制对小麦茎秆干物质转运的影响。 关键词：小麦 光合源 干物质 籽粒 Effect of Photosynthetic Source Limited on Dry Matter Translocation in Wheat Stalks Abstract：Wheat is the staple food of the human, it is also an important food grain, the worlds distribution of wheat is very wide, it is the largest planting area of grain crops. With wheat acreage declining as well as the increasing demand for people, one of the main improving measures is increasing wheat yield. In order to improve the yield of wheat, start from the research of wheat yield. The decreasing leaf and covering ear method was used to research the effect of photosynthetic source limited on dry matter translocation in Wheat Stalks and contribution of grain weight. In this paper, the main works are followed: (1) Effect of ear photosynthesis limited on dry matter accumulation and translocation in wheat stalks. (2)Effect of leaf photosynthesis limited on dry matter accumulation and translocation in wheat stalks. (3) Effect of ear photosynthesis on the grain and yield component traits. (4) Effect of leaf photosynthesis on the grain and yield component traits. The main purpose is to investigate the effect of different photosynthetic organs dry matter accumulation and translocation in wheat stalks, on the contribution of leaves and non grain organs to wheat yield and its components. In order to provide reference for wheat cultivation and breeding and to survive theory basis and the technology for the wheat surpasses high yield. It comes to a conclusion as follows: Have made clear the fo