深松与免耕频次对黄土旱塬春玉米田土壤团聚体与土壤碳库的影响

张琦,王淑兰,王浩,刘朋召,王旭敏,张元红,李昊昱,王瑞,王小利,李军

Effects of Subsoiling and No-Tillage Frequencies on Soil Aggregates and Carbon Pools in the Loess Plateau

ZHANG Qi,WANG ShuLan,WANG Hao,LIU PengZhao,WANG XuMin,ZHANG YuanHong,LI HaoYu,WANG Rui,WANG XiaoLi,LI Jun

表1 试验前土壤理化性质

Table 1 Soil physical and chemical properties at beginning of experiment

土层 Soil depth (cm） pH 有机质 Organic matter (g·kg-1) 全氮 Total nitrogen (g·kg-1) 全磷 Total phosphorus (g·kg-1) 全钾 Total potassium (g·kg-1) 容重 Bulk density (g·cm-3) 孔隙度 Porosity (%) 0-20 7.86 9.95 0.74 0.59 5.92 1.36 48.68 20-40 7.96 8.41 0.65 0.69 5.53 1.45 44.66