等有机质 土有效磷和无机磷形态的关系

李若楠,王政培,BATBAYARJavkhlan,张东杰,张树兰,杨学云

Relationship Between Soil Available Phosphorus and Inorganic Phosphorus Forms Under Equivalent Organic Matter Condition in a Tier Soil

RuoNan LI,ZhengPei WANG,Javkhlan BATBAYAR,DongJie ZHANG,ShuLan ZHANG,XueYun YANG

表2 土不同有效磷水平下土壤无机磷相对含量（%）

Table 2 The proportion of different forms of inorganic phosphorus to total inorganic phosphorus in soils with a gradient of Olsen P level of a tier soil

土壤样品 Soil sample 各形态无机磷占总无机磷的百分比 Proportion of inorganic phosphorus fraction to total (%) Ca2-P Ca8-P Ca10-P Ca-P Al-P Fe-P O-P S 1 1.63c 14.84bc 53.65a 70.12a 12.50c 5.63ab 11.76a S 2 2.02bc 13.92c 54.24a 70.19a 12.32c 5.84a 11.65a S 3 2.23b 16.26b 50.17ab 68.66a 13.46c 4.93ab 12.95a S 4 2.31b 19.05a 45.83bc 67.18a 16.84b 4.44b 11.54a S 5 3.64a 16.61b 47.30b 67.54a 14.83bc 5.36ab 12.27a S 6 3.69a 16.48b 42.39c 62.57b 21.02a 4.84ab 11.56a S 7 4.08a 20.43a 35.95d 60.46b 22.97a 5.60ab 10.97a Mean 2.80 16.80 47.08 66.67 16.28 5.23 11.81