有机复混磷肥对石灰性土壤无机磷形态组成及其变化的影响  

Effects of organic and inorganic phosphorus compound fertilizer on transformation of inorganic phosphorus pool in lime soils

作　　者：杜伟[1,2] 赵秉强[1] 林治安[3] 袁亮[3] 李燕婷[1] 

机构地区：[1]农业部作物营养与施肥重点实验室中国农业科学院农业资源与农业区划研究所,北京100081 [2]清华大学环境学院,北京100084 [3]中国农业科学院德州盐碱土改良实验站,山东德州253015

出　　处：《植物营养与肥料学报》2011年第6期1388-1394,共7页Journal of Plant Nutrition and Fertilizers

基　　金：“十一.五”国家科技支撑计划课题(2006BAD10B03);“十二五”国家科技支撑计划课题(2011BAD11B05)资助

摘　　要：在实验室培养条件下,研究了有机复混磷肥对石灰性土壤无机磷组成变化的影响。结果表明,1)单独施用有机物料对提高土壤速效磷含量的影响不大,但施用磷肥,无论是磷酸一铵化肥还是有机复混磷肥,均显著提高了土壤速效磷含量;施用有机复混磷肥提高土壤速效磷的幅度(67.5 mg/kg～80.4 mg/kg)高于施用磷酸一铵化肥处理(62.3 mg/kg);有机复混磷肥中有机物料的含量高低对土壤速效磷含量的影响不大。2)单独施用有机物料具有提高土壤Ca2-P含量的作用,且明显提高了Ca8-P含量,但对Al-P、Fe-P、O-P、Ca10-P含量影响不大;施用无机磷肥和有机复混磷肥,显著提高了土壤Ca2-P、Ca8-P、Al-P含量,而对Fe-P、O-P、Ca10-P含量的影响很小;与磷酸一铵化学磷肥处理相比,施用有机复混磷肥对Ca2-P含量影响较小,但明显提高了Ca8-P含量,Fe-P含量也表现增加的趋势,而Al-P含量明显降低,O-P和Ca10-P含量的变化则没有明显规律;有机复混磷肥中有机物料的比例高低对土壤无机磷组成变化的影响没有表现出明显的规律性。3)施用磷肥引起速效态Ca2-P和缓效态Ca8-P的变化最大,其它形态无机磷的变化相对较小。与磷酸一铵化肥处理相比,有机复混磷肥处理Ca8-P的变异提高幅度增加,而Al-P的变异提高幅度减小,其它指标库容的变异幅度与之相近。4)施磷处理土壤速效磷含量与土壤Ca2-P、Ca8-P含量呈线性正相关,相关系数分别达到0.9888、0.9867,而Al-P、Fe-P、O-P、Ca10-P与土壤速效磷相关性不显著,磷肥施入土壤后,土壤无机磷库中Ca2-P、Ca8-P的变化对土壤速效磷含量的贡献最大。Effects of organic and inorganic phosphorus compound fertilizer on the composing and transformation of inorganic phosphorus in lime soil was carried out under laboratory incubation condition.The results show that there are little effects on improving soil available P content through single application of small quantity of organic materials,but the soil available phosphorus contents are significantly increased under the applications of phosphate fertilizers,whether it is MAP or organic and inorganic phosphorus compound fertilizer.Besides,the soil available phosphorus contents are increased by 67.5 mg/kg to 80.4 mg/kg under the applications of organic and inorganic phosphorus compound fertilizer compared to the application of MAP（62.3 mg/kg）.Moreover,there are little effects of the quantity of organic materials in organic and inorganic fertilizers compound on the soil available P.The increasing trend of Ca2-P content is found through single application of organic materials,and the Ca8-P content is significantly increased as well,while there are little changes in Al-P,Fe-P,O-P and Ca10-P contents;Applications of phosphate fertilizers,whether it is MAP or organic and inorganic phosphate compound fertilizer,improve the soil Ca2-P,Ca8-P,Al-P contents significantly,while the changes of Fe-P,O-P,Ca10-P are small.Comparing with the MAP treatment,the applications of organic-inorganic fertilizers have little affects on the content of Ca2-P,while increases the content of Ca8-P and decreases the Al-P content significantly,and there is a rising trend on Fe-P content and no obvious regularity on O-P and Ca10-P contents.Besides,there is no obvious regularity in the effect of the organic materials proportion on the composing and transformation of soil inorganic phosphorus pool.The changes in Ca2-P and Ca8-P contents are bigger than those of the other phosphorus forms through the phosphate fertilizer application.Compared with the MAP fertilizer application,the applications of organic and inorganic phosphorus compound fertilize

关 键 词：有机复混磷肥 土壤无机磷形态分级 土壤磷 

分 类 号：S158[农业科学—土壤学]