摘要
采用室内培养和微区试验研究表明，施入白浆土中无机磷在短时间内（２４ｈ、８ｄ）主要向ＦｅＰ和ＡｌＰ转变，较长时间后（８０ｄ），ＡｌＰ向ＦｅＰ转化，ＣａＰ变化较弱，土壤中无机磷形态转化与白浆土本身的土壤属性具有密切关系．施用有机肥改变了土壤中无机磷形态的转化过程，其与土壤中的铁、铝氧化物反应形成的“Ａｌ有机质Ｐ”和“Ｆｅ有机质Ｐ”
Incubation test and microplot experiments were conducted to study the transformation of inorganic phosphorus in albic soil.The results show that most part of soil inorganic phosphate was transformed into iron and aluminum phosphates after a short period of incubation (24 hours and 8 davs,respectively),and aluminum phosphate was transformed into iron phosphate after 80 days of incubation.Calcium phosphate changed slightly throughout the whole period.A close relationship between inorganic phosphorus transformation and soil properties was found.The transformation process of inorganic phosphorus was changed by applying organic fertilizers,whose reaction with iron and aluminum oxides induced the formation of “organic matter iron phosphate” and “organic matter aluminum phosphate”complexes which can be easily uptaken by crop.
出处
《应用生态学报》
CAS
CSCD
1999年第4期419-422,共4页
Chinese Journal of Applied Ecology
基金
国家自然科学基金
关键词
白浆土
无机磷形态
营养物质转化
Albic soil
Inorganic phosphorus fractions
Transformation.
