甘蔗的叶面积和净同化率直接影响到干物质形成和积累,从而影响产量。迄今虽有一些有关甘蔗光合生产率方面研究的报道,但资料较零散,多着重于一两个生长期的表现。因此,我们在前人工作的基础上,比较系统地研究了两个甘蔗品种的叶面积、净同化率以及干物质积累和分配这几个重要光合特性在不同时期中的表现,供甘蔗生产和科研 Leaf area and net assimilation rate of sugarcane directly affect the formation and accumulation of dry matter, thus affecting the yield. Although there have been some reports on photosynthetic productivity of sugarcane so far, the data are scattered and more focused on the performance of one or two growth stages. Therefore, based on the previous work, we systematically studied the leaf area, net assimilation rate, and the accumulation and distribution of dry matter in two sugar cane varieties in different periods for the performance of sugarcane production and research