微晶化磷矿粉的释磷特性及肥效机理  

Characteristics of Phosphorus Release of Microcrystalline Phosphate Rock and Its Fertilizer Efficiency

作　　者：吕乐福[1,2] 盖国胜[1] 刘春生[2] 杨玉芬[1] 何振全 李万才 

机构地区：[1]清华大学材料学院教育部先进材料实验室,北京100084 [2]山东农业大学资源与环境学院,山东泰安271018 [3]浙江清华长三角研究院粉体及新材料工程中心,浙江长兴313100 [4]滨州清大科技责任有限公司,山东滨州256600

出　　处：《水土保持学报》2013年第3期213-217,共5页Journal of Soil and Water Conservation

基　　金：农业科技成果转化资金项目(2010GB23600657);无锡市130科技计划支撑项目;山东省自然科学基金项目(ZR2009DM043)

摘　　要：以有机材料为活化剂,用微晶化设备对磷矿粉进行活化处理,研究微晶活化后磷矿粉的物理特性、磷素释放动态及肥效。结果表明:微晶活化后磷矿粉的粒径整体变小,比表面积显著增大,磷素单次释放量和释放总量显著提高。施入土壤后,芦笋合格产品支数、单支质量和总产量较普通磷矿粉处理分别提高了2.61%,7.94%和9.64%;施用磷矿粉还可以增加土壤有效磷含量,提高土壤pH值,并促进芦笋对磷素的吸收,其中微晶化磷矿粉处理增加幅度明显高于普通磷矿粉处理。微晶化磷矿粉增量施用后,增产效果与普通过磷酸钙处理相当。The phosphate rocks and mechanically activated by a microcrystalline mill with an organic activator were used to study their physical properties,kinetics of phosphorus release and fertilizer efficiency.The results showed that the microcrystalline activation could reduce particle size,significantly increase specific surface area and improve single dose and total dose of phosphorus obviously.After the microcrystalline phosphate rock was applied to the soil,the count of asparagus qualified product,the single branch weight and total yield were increased by 2.61%,7.94% and 9.64%,respectively compared to the ordinary rock phosphate treatment.Application of phosphate rock could also raise the content of available phosphorus in the soil,the soil pH and phosphorus content of plant,which it was significantly higher than ordinary phosphate rock treatment.The stimulation effect of the treatment which applied increments of microcrystalline phosphate rock was similar to the ordinary super phosphate treatment.

关 键 词：微晶化 磷肥 芦笋 土壤性质 

分 类 号：S143.21[农业科学—肥料学]