微细磷矿粉的有效性研究  

Study of Availability of Very Fine Ground Phosphate Rock

作　　者：齐美娟[1,2] 李菊梅[2] 谷思玉[1] 马义兵[2] 

机构地区：[1]东北农业大学资源与环境学院,哈尔滨150030 [2]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《化肥工业》2011年第1期26-30,共5页Chemical Fertilizer Industry

基　　金：国家"973"(2005CB121102);"支撑计划项目"(2006BAD25B07);"863"计划(2006AA10Z417)

摘　　要：以褐土盆栽试验研究了超微细磷矿粉提高土壤速效磷含量及其生物有效性。结果表明:磷矿粉有效磷含量、水溶性磷含量及土壤速效磷含量随颗粒细度减小而增加,特别是大部分颗粒细度在20μm以下时,磷矿粉的有效磷和水溶性磷含量提高幅度较大。当磷矿粉粒度在20.11～2.87μm时,与0.100～0.075mm粒度相比,有效磷含量提高了2.63倍,水溶性磷含量提高8.70倍,生物量提高0.26倍,土壤速效磷含量提高1.38倍。In a brown earth pot experiment a study is made of the increase by super-fine ground phosphate rock in quick-acting phosphorus content of the soil and biological effectiveness. The results indicate that the available and water-soluble phosphorus content of the rock and the quick-acting phos- phorus content of the soil increase with a decrease in particle size, particularly when the majority of the particle size is below 20μm the available and water-soluble phosphorus content rises by a big margin. When the particle size of the rock is 20. 11 - 2. 87μm, as compared to 0. 100 - 0. 075 mm in particle size, the available phosphorus content increases by 2.63 times, the water-soluble phosphorus content by 8.70 times, the biomass by O. 26 times, and the quick-acting phosphorus content of the soil by 1.38 times.

关 键 词：微细磷矿粉 磷有效性 研究 

分 类 号：TQ127.2[化学工程—无机化工]