论文部分内容阅读
施用钾肥可显著地提高紫花苜蓿和其它豆科牧草的产量已确认无疑(Smith,1975),但其增产的生理生化原因还不十分清楚。本研究的目的在于进一步阐明豆科饲草苜蓿的光合作用和固氮作用二者间受钾刺激的相关性,并测定碳转化率和乙快还原率。材料与方法本试验的土壤取自大田小区内。一般在两年以上的“Vernal”苜蓿上施用从0到1,345公斤/公顷的 KCl 或 K_2SO_4肥料。为
The use of potash fertilizer has significantly increased the yield of alfalfa and other leguminous herds (Smith, 1975), but the physiological and biochemical reasons for increasing yield are not well understood. The purpose of this study is to further clarify the correlation between photosynthesis and nitrogen fixation of Medicago sativa under potassium stimulation, and to determine the carbon conversion rate and B fast reduction rate. Materials and Methods The soil of this experiment was taken from Daejeon plot. KCl or K 2 SO 4 fertilizers from 0 to 1,345 kg / ha are generally applied on “Vernal” alfalfa for more than two years. for