The results were as follows:the 14C assimilation of the leaves on main stem and fruiting branches of cotton plant with monopodial branches were reduced significantly.

• 结果表明：留营养枝与否对全株14C总同化量基本没有影响，但留营养枝棉株果枝叶的相对光合强度(以放射性比强度表示)降低；