CONTROLLING PHOSPHORUS FIXATION IN CALCAREOUS SOILS BY USING COATED DIAMMONIUM PHOSPHATE

被引：15

作者：

DIEZ, JA

CARTAGENA, MC

VALLEJO, A

机构：

[1] Centro de Ciencias Medioambientales de Madrid, C.S.I.C., Madrid

[2] E.T.S.I. Agrónomos, Universidad Politécnica de Madrid, Madrid

来源：

FERTILIZER RESEARCH | 1992年 / 31卷 / 03期

关键词：

PHOSPHORUS FIXATION; CALCAREOUS SOILS; COATED FERTILIZER; DIAMMONIUM PHOSPHATE;

D O I：

10.1007/BF01051278

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

In this paper, phosphorus fixation in calcareous soils is controlled by means of rosin-coated diammonium phosphate pellets, with several rates of phosphorus release. Four soils from arid regions in the Spanish south-east were chosen and separately treated with one of the following fertilizers: superphosphate (SP) or diammonium phosphate (DAP) coated with 0, 10 or 22% rosin with a dosage of 1000 Kg P/ha. After treatment, the soils were incubated for 8 months, in the course of which samples were taken to evaluate the evolution of P availability by means of the electroultrafiltration (EUF) technique. The results obtained show that the use of DAP with a 22% coating enables phosphorus fixation in calcareous soils to be controlled. The coating was sufficiently stable to last for the time it takes the crop to grow.

引用

页码：269 / 274

页数：6

共 11 条

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