长期耕作对新疆绿洲农田土壤颗粒中有机碳和全氮含量的影响

唐光木,张云舒,徐万里,马海刚,胡克林

Effects of Long-Term Cultivation on Contents of Organic Carbon and Total Nitrogen in Soil Particulate Fraction in Oasis Farmland of Xinjiang

TANG GuangMu,ZHANG YunShu,XU WanLi,MA HaiGang,HU KeLin

表1 土壤基本理化性质

Table 1 Basic physical-chemical properties of surface soil

采样点 Sampling site pH 容重 Bulk density (g·cm-3) 碱解氮 Available N (mg·kg-1) 速效磷 Available P (mg·kg-1) 速效钾 Available K (mg·kg-1) 电导率 EC (mS·cm-1) 阳离子交换量 CEC (cmol·kg-1) 兰州湾 Lanzhouwan 8.18±0.19 1.41±0.18 53.33±45.97 14.07±21.43 380.00±144.00 1.66±0.69 11.31±9.11 31团 31 corps 8.03±0.09 1.41±0.19 50.25±6.32 28.72±8.21 135.00±9.40 0.58±0.09 10.56±1.26 普惠农场 Puhui farm 7.92±0.13 1.47±0.13 47.35±10.32 60.09±28.17 128.40±23.84 1.21±0.51 9.37±1.86