A study was conducted under general field condition to control pol lination so as to investigate the dynamic of soluble sugar and starch in the cob and silk of two varieties corn.

• 在一般大田环境中,控制玉米果穗的授粉情况,研究果穗在套袋和自然授粉时可溶性糖和淀粉在花丝和穗轴中的变化情况。