Phosphate Requirement of Acidic Soils in Northeast India: A Reappraisal Based on Phosphate Sorption Isotherms

被引：3

作者：

Kumar, Manoj ^{[1
]}

机构：

[1] ICAR Res Complex NEH Reg, Div Nat Resource Management Soil Sci, Umiam 793103, Meghalaya, India

来源：

NATIONAL ACADEMY SCIENCE LETTERS-INDIA | 2015年 / 38卷 / 05期

基金：

美国人文基金会;

关键词：

Soil acidity; P deficiency; Fertilizer requirement; Langmuir adsorption isotherm; PHOSPHORUS REQUIREMENTS; WHEAT;

D O I：

10.1007/s40009-015-0376-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Batch adsorption studies were conducted to assess the P sorption characteristics and standard P requirement (SPR) of two representative acidic soils of northeast India: (1) Alfisol with pH 4.5 (S-4.5), and (2) Inceptisol with pH 5.0 (S-5.0). It is found that the actual P requirement of the acidic soils in northeast India may be higher than its present recommendation; and also, there exists considerable variation in P requirement of soils within the same region, which underlines the need of site-specific nutrient recommendation rather than a single blanket recommendation for the whole region.

引用

页码：383 / 386

页数：4

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