化肥减量配施有机肥对植烟土壤及烤烟根系生长的影响

钟国兴, 杨欣, 张少搏, 郭维, 杨启航, 李淮源, 陈建军, 陈晓恒, 黄瑞寅, 邓世媛

Effects of Chemical Fertilizer Reduction Combined with Organic Fertilizer on Tobacco-Planting Soil and Root Growth of Flue-Cured Tobacco

Zhong Guoxing, Yang Xin, Zhang Shaobo, Guo Wei, Yang Qihang, Li Huaiyuan, Chen Jianjun, Chen Xiaoheng, Huang Ruiyin, Deng Shiyuan

表2 化肥减量配施有机肥对土壤物理特性及有机质含量的影响

Table 2 Effects of chemical fertilizer reduction combined with organic fertilizer on soil physical properties and organic matter content

时期 Stage 处理 Treatment 土壤容重 Soil bulk density (g/cm3) 土壤含水率 Soil moisture content (%) 土壤孔隙度 Soil porosity (%) 有机质含量 Organic matter content (g/kg) 移栽后45 d 45 days after transplanting CK 1.02±0.01b 24.40±2.14ab 61.49±0.46a 27.85±0.88a T1 1.09±0.02a 22.39±0.28b 58.69±0.61b 23.87±1.98b T2 1.01±0.01b 28.19±2.32a 63.61±0.48a 30.54±0.64a T3 0.98±0.02bc 24.90±1.33ab 61.73±0.22a 29.37±0.61a T4 0.96±0.01c 27.43±1.50ab 63.08±0.82a 28.60±0.44a 移栽后70 d 70 days after transplanting CK 1.12±0.00a 21.74±1.36a 57.83±0.07b 31.79±2.11a T1 1.15±0.05a 17.58±3.45b 56.73±2.00b 22.52±0.32b T2 1.01±0.02b 22.67±1.10a 61.88±0.85a 32.15±0.30a T3 1.10±0.01ab 20.25±1.65a 58.60±0.34ab 30.81±0.67ab T4 1.07±0.01ab 23.73±0.92a 59.77±0.43ab 33.76±0.38a 移栽后95 d 95 days after transplanting CK 1.08±0.00ab 18.92±0.16c 59.29±0.18a 24.42±1.49c T1 1.11±0.00a 18.21±1.44c 58.17±0.10a 18.90±1.73d T2 1.04±0.01b 27.31±2.71a 60.71±0.46a 44.86±1.69a T3 1.07±0.01ab 20.40±0.50bc 59.47±0.35a 34.86±1.22b T4 1.06±0.02ab 24.35±1.58ab 59.95±0.84a 33.05±0.69b