陕西关中冬小麦/夏玉米区土壤磷素特征

刘琳,吉冰洁,李若楠,BATBAYARJavkhlan,张树兰,杨学云

Characteristics of Soil Phosphorus in Winter Wheat/Summer Maize Cropping in Shaanxi Guanzhong Plain

Lin LIU,BingJie JI,RuoNan LI,Javkhlan BATBAYAR,ShuLan ZHANG,XueYun YANG

表3 陕西关中各县市小麦/玉米区耕层土壤全磷、有机磷、无机磷和有效磷含量及其占土壤全磷的比例

Table 3 Soil total P (TP), organic P (OP), inorganic P (IP) and Olsen P contents in surface soil and the its proportions in TP in wheat/maize cropping in Shaanxi Guanzhong Plain

取样地点 Sampling site 全磷含量 Total P (g·kg-1) 有机磷含量 Total-organic P (mg·kg-1) 有机磷/全磷 (Total-organic P/Total P) (%) 无机磷含量 Total- inorganic P (mg·kg-1) 无机磷/全磷 (Total-inorganic P/Total P) (%) 有效磷含量 Olsen P (mg·kg-1) 有效磷/全磷 (PAC) (%) 宝鸡市Baoji 1.10 145.95 13.27 901.26 81.93 26.09 2.37 陈仓区Chencang 1.05±0.17 203.00±116.9 19.32 847.96±197.97 80.68 21.53±9.63 2.05 岐山县Qishan 1.19±0.19 232.20±155.02 19.48 960.04±223.48 80.52 26.54±10.10 2.23 扶风县Fufeng 1.17±0.25 108.54±99.52 9.25 1065.34±255.48 90.75 27.42±11.73 2.34 咸阳市Xianyang 1.08 155.39 14.39 899.45 83.28 27.50 2.55 兴平县Xingping 1.15±0.21 172.48±115.28 14.97 979.55±216.54 85.03 28.51±14.63 2.48 三原县Sanyuan 0.98±0.16 166.56±125.93 17.08 808.36±199.83 82.92 21.20±11.31 2.16 泾阳县Jingyang 1.09±0.18 186.63±129.61 17.07 906.97±208.66 82.93 26.19±13.39 2.40 武功县Wugong 1.20±0.21 177.72±114.73 14.87 1017.36±179.73 85.13 35.74±17.25 2.98 渭南市Weinan 0.95 237.75 25.03 711.52 75.00 21.53 2.27 临渭区Linwei 0.91±0.17 266.20±120.66 29.15 646.93±196.70 70.85 17.70±7.00 1.95 蒲城县Pucheng 0.92±0.15 232.87±80.54 25.22 690.41±153.68 74.78 21.89±11.64 2.38 富平县Fuping 0.96±0.18 263.76±106.22 27.49 695.86±184.71 72.51 24.44±12.24 2.55