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3 不同磷水平下玉米与大豆间作对大豆不同组织氮素吸收量的影响

Table 3 Effects of maize and soybean intercropping on N uptake of soybean different organs under different P rates (mg plant-1)

磷水平 P rates 种植模式 Planting patterns 叶 Leaves 茎 Stems 根 Roots 根瘤 Nodules 全株 Whole plant P50 MS 13.76±1.51 a 11.61±1.78 a 1.24±0.09 a 1.22±0.01 a 27.83±1.07 a IS 25.05±2.46 a 17.31±0.36 a 2.80±0.32 a 2.72±0.19 a 47.88±2.87 a P100 MS 24.03±1.58 a 21.36±0.61 a 3.41±0.15 a 1.81±0.20 a 50.60±0.97 a IS 34.63±1.86 a 26.67±2.20 a 5.53±0.24 a 3.59±0.32 a 70.43±3.52 a 施磷量 P rates P50 19.41 b 14.46 b 2.02 b 1.97 b 37.86 b P100 29.33 a 24.02 a 4.47 a 2.70 a 60.51 a 种植模式 Planting pattern MS 18.90 b 16.48 b 2.32 b 1.51 b 39.22 b IS 29.84 a 21.99 a 4.17 a 3.16 a 59.15 a 显著性 Significance 磷水平 P rates (P) ** ** ** ** ** 种植模式 Planting patterns (PP) ** ** ** ** ** P×PP ns ns ns ns ns