中棉12号是目前推广的抗病高产优质品种,具有较好的适应性与产量稳定性。为探索其高产与生态生理的关系,我们对中棉12号的光合生理生态、干物质生产进行了研究。材料与方法1986～1987年在本所进行了田间试验。1986年播期为4月15日和4月30日。每播期 Zhongmian 12 is the current high-quality, high-yielding variety with good adaptability and yield stability. In order to explore the relationship between its high yield and ecological physiology, we studied the photosynthetic physio-ecology and dry matter production of Zhongmian 12. Materials and methods 1986 to 1987 in our field trials. The sowing date in 1986 was April 15 and April 30. Every sowing date