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施磷肥对土壤磷素形态转化和有效性的影响 被引量:11

Effects of Phosphate Fertilizer on Soil Phosphorus Forms Transformation and Its Availability
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摘要 通过室内土壤培育和盆栽试验,研究了施磷肥和培育时间对灌漠土、黑垆土和褐土无机磷形态转化及有效性的影响。结果表明施入石灰性土壤的磷肥,除作物吸收利用外,主要以Ca_2—P、Ca_8—P、Al—P的形态积累;随着培育时间的推移,Ca_2—P、Ca_8—P又明显降低,并经由Al—P、Fe—P逐渐向Ca_10—P转化。经生物试验和相关分,Ca_2—P、Al—P和Ca_8—P均是灌漠土、黑垆土和褐土的有效磷源,以Ca_2—P的贡献最大。 Effects of phosphate fertilizer application and incubation time on inorganic P formstransformation and its availability in irrigated desert soil, Heilu soil and cinnamon soil were studiedby the soil incubation in room and pot experimint. The results showed that phosphate fertilizer ap-plied to the calcareous soil accumulated maingly as Ca_2-P, Ca_8-P and Al-P forms except crop absorption. Increasing on the incubation time , the Ca_2-P and Ca_8-P decreased obviously and from Al-Pand Fe-P transformed to Ca_10-P slowly. Both biological experiment and statistical analysis point outthat the Ca_2-P, Al-P and Ca_8-P in irrigated desert soil, Heilu soil and cinnamon soil are all the mostavailable forms for plant.
出处 《甘肃农业大学学报》 CAS CSCD 1994年第4期392-395,共4页 Journal of Gansu Agricultural University
基金 甘肃省自然科学基金
关键词 磷肥 磷素形态 盆栽试验 phosphate fertilizer soil phosphorus forms
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