玉米冠层结构、光分布和光合作用研究综述

Review on Maize Canopy Structure, Light Distributing and Canopy Photosynthesis

玉米冠层结构的研究与光分布的研究相辅相成。叶片是玉米冠层结构中最主要的器官,先人曾利用叶角分布来表示玉米的空间结构。对玉米冠层结构的描述也集中在叶曲线和叶形的描述上。三维重建技术给玉米冠层结构研究带来新的生机,在此基础上,利用投影Z-Buffer算法和Turtle模型也使冠层内光分布研究得到了发展,弥补了指数模型应用假设的不足,克服了G函数应用复杂和繁琐的缺点。这些研究为准确计算光合作用的研究打下了坚实的基础。玉米叶片空间结构和株型的差异使得光在冠层内的分布不同,从而影响了光合作用。

Studies on the structure of maize canopy and light distribution li nk to each other tightly. But the leaves are the most important apparatus in the structure of maize canopy. Forefathers ever took advantage of the leaf-angle di stribution to express the structure of maize canopy in space. But the descriptio ns on the structure of maize canopy mainly centralized on the curvature and shap e of maize leaf characterized. The technology of three-dimensional reconstructio n has brought the new vital force to study the structure of maize canopy. Accord ingly based on it, made using of projection Z-buffer arithmetic and the model of Turtle advanced the study of light distribution in maize canopy, which made up for hypothesis in applying the index model and overcame the shortcoming of compl exity and fussiness in applying G-function. These researches offer a stable base for calculating photosynthesis exactly. The difference of leaves distribution i n space or plant morphological patterns in maize make light distribution in maiz e canopy be different, thus it affects photosynthesis in maize.