改善土壤通气性促进甘薯源库间光合产物运转的原因解析

刘永晨,司成成,柳洪鹃,张彬彬,史春余

Reason exploration for soil aeration promoting photosynthate transportation between sink and source in sweet potato

Yong-Chen LIU,Cheng-Cheng SI,Hong-Juan LIU,Bin-Bin ZHANG,Chun-Yu SHI

表1 栽秧期土壤物理性状

Table 1 Physical characteristics of the soil in planting

年份Year 处理Treatment 土层深度 Soil layer (cm) 土壤紧实度 Soil volume weight (kPa) 土壤容重 Soil compactness (g cm-3) 土壤比重 Soil specific gravity (g cm-3) 总孔隙度 Total porosity (%) 毛管孔隙度 Capillary porosity (%) 非毛管孔隙度 Non-capillary porosity (%) 2017 SS 5-10 126.49 1.26 2.58 51.35 24.86 26.49 15-20 224.23 1.30 2.57 49.35 25.50 23.85 CK 5-10 301.16 1.33 2.64 49.81 24.15 25.66 15-20 464.12 1.39 2.73 49.19 31.68 17.51 JS 5-10 541.63 1.46 2.73 46.38 31.78 14.60 15-20 927.74 1.49 2.75 45.71 38.30 7.41 2018 SS 5-10 143.17 1.25 2.57 50.69 24.62 26.07 15-20 174.17 1.29 2.58 49.62 25.46 24.16 CK 5-10 267.91 1.33 2.65 48.92 25.30 23.62 15-20 508.06 1.38 2.73 48.65 30.14 18.51 JS 5-10 826.07 1.47 2.74 46.66 31.21 15.45 15-20 1230.60 1.49 2.75 45.83 36.91 8.92