不同用量风化煤腐殖酸对玉米根系的影响

周丽平,袁亮,赵秉强,李燕婷,林治安

Response of Maize Roots to Different Additive Amounts of Weathered Coal Humic Acids

ZHOU LiPing,YUAN Liang,ZHAO BingQiang,LI YanTing,LIN ZhiAn

表3 腐殖酸对玉米根系形态的影响

Table 3 Effects of humic acids on maize root morphology

处理 Treatment 总根长 Total length (cm) 总根数量 Total root number 根体积 Root volume (cm3) 根表面积 Root surface area (cm2) 根平均直径 Root average diameter (mm) CK 1418.40±52.42 c 759.00±42.53 c 2.32±0.10 d 88.75±1.66 c 2.18±0.18 c HA1 1507.24±95.37 bc 832.33±61.44 bc 3.43±0.35 c 98.92±3.93 b 3.07±0.11 b HA2 1769.85±100.90 a 993.67±71.16 a 4.50±0.16 a 112.03±7.17 a 3.53±0.13 a HA3 1620.72±80.24 ab 877.33±60.53 b 4.01±0.40 ab 101.72±4.76 b 3.27±0.05 b HA4 1542.45±83.97 bc 841.00±21.28 bc 3.80±0.24 bc 94.42±2.33 bc 3.16±0.15 b HA平均 Average 1610.06 886.08 3.94 101.77 3.26 HA变异系数 CV 0.07 0.08 0.11 0.07 0.06