Opportunities to improve phosphorus efficiency and soil fertility in rainfed lowland and upland rice ecosystems

被引：86

作者：

Kirk, GJD ^{[1
]}

George, T ^{[1
]}

Courtois, B ^{[1
]}

Senadhira, D ^{[1
]}

机构：

[1] Int Rice Res Inst, Manila 1099, Philippines

来源：

FIELD CROPS RESEARCH | 1998年 / 56卷 / 1-2期

关键词：

germplasm; phosphorus efficiency; phosphorus solubilization; organic acid; rhizosphere pH change; plant cation-anion balance; iron oxidation; fertilizer formulation; residual phosphorus; cumulative response; subsoil acidity; nitrate leaching;

D O I：

10.1016/S0378-4290(97)00141-X

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The use of improved germplasm and management to increase rice production in rainfed lowland and upland systems is discussed. Understanding of the mechanisms conferring P efficiency, particularly external efficiency through root-induced changes in the rhizosphere, is reviewed together with evidence for genetic variation in P efficiency in upland and lowland rice germplasm. The following areas for improving resource and input management are considered: P management under alternately wet and dry soil conditions; P fertilizer formulations for banding in highly-weathered soils; cumulative responses to P fertilizer, including interactions with biological N fixation by legumes; amelioration of subsoil acidity, especially by leaching down the effects of surface-applied lime; and the management of soil spatial variability. Areas for future research are given. (C) 1998 Elsevier Science B.V.

引用

页码：73 / 92

页数：20

共 103 条

[91] PHOSPHORUS TRANSFORMATIONS FROM ROCK PHOSPHATES IN ACID SOILS AND MEASURES FOR INCREASING THEIR EFFICIENCY FOR GROWING RICE (ORYZA-SATIVA-L) [J].