Fresh root weight and nodule number of alfalfa with lime application were higher than those of the control group.
施用石灰后，紫花苜蓿的根鲜重、根瘤数、株高、鲜重、干重、分枝数都高于对照。
Chromium treatment significantly decreased nodule Numbers, nodule fresh weight, leghemoglobin content and nitrogenase (acetylene reduction) activity per plant or per gram of nodules.
铬还使单株固氮酶活性(乙炔还原法测定)显著降低，用高浓度铬处理者克瘤固氮活性也显著降低。
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