低磷条件下玉米大豆间作对大豆根瘤生长、固氮功能的影响

覃潇敏, 潘浩男, 肖靖秀, 汤利, 郑毅

Effects of maize and soybean intercropping on nodule growth, nitrogen fixation of soybean under low phosphorus condition

QIN Xiao-Min, PAN Hao-Nan, XIAO Jing-Xiu, TANG Li, ZHENG Yi

表2 间作和磷水平对大豆根瘤生长及固氮能力的影响

Table 2 Effects of intercropping and P rates on growth and nitrogen fixation ability of soybean nodules

磷水平 P rates 种植模式 Planting patterns 根瘤数 Nodule number 根瘤干重 Nodule dry weight 豆血红蛋白 Leghemoglobin 固氮酶活性 Nitrogenase activity P50 29.04 b 0.197 b 4.56 b 1.53 b P100 42.88 a 0.245 a 5.74 a 2.02 a MS 24.92 b 0.155 b 4.76 b 1.62 b IS 47.00 a 0.287 a 5.55 a 1.92 a 磷水平 P rates (P) ** ** ** ** 种植模式 Planting patterns (PP) ** ** ** ** P×PP * ns ns ns