In order to study the effects of different levels of salt stress and nitrogen (N) on physiological mechanisms, carbon is......

本文研究不同大豆品系（种）鼓粒期冠层叶片的净光合速率、转化酶活性与单株籽粒产量的关系。结果表明，不同大豆品系（种）的净光合速率、转......