| Changes in Inorganic and Organic Soil Phosphorus Fractions Induced by Cultivation Practices and by Laboratory Incubations1 | |
| M. J. Hedley ; J. W. B. Stewart and B. S. Chauhan | |
| 发表期刊 | Soil Science Society of America Journal
 |
| 1981 | |
| 卷号 | 46期号:5页码:970-976 |
| 英文摘要 | Changes in inorganic and organic phosphorus (P) fractions resulting from 65 years of cropping in a wheat-wheat-fallow rotation were studied using a sequential extraction technique. Total P content of the cultivated soil was 29% lower than that of the adjacent permanent pasture; the major loss of P (74% of total P lost) was organic P and residual P. Of the total P lost, 22% was from the extractable organic P forms, whereas 52% originated from stable P.Incubation studies were used to study seasonal P transformations during simulated fallow with and without residue incorporation and P fertilization. Nine monthly additions of cellulose (765 µg C · g−1 soil) with and without P (9 µg · g−1 soil) significantly altered levels of total extractable organic P and inorganic P in incubated soils. Evidence is provided for microbial activity playing a major role in redistributing P into different forms in the soil |
| 语种 | 英语 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/4479 |
| 专题 | 科研共享资源 |
| 推荐引用方式 GB/T 7714 | M. J. Hedley,J. W. B. Stewart and B. S. Chauhan. Changes in Inorganic and Organic Soil Phosphorus Fractions Induced by Cultivation Practices and by Laboratory Incubations1[J]. Soil Science Society of America Journal,1981,46(5):970-976. |
| APA | M. J. Hedley,&J. W. B. Stewart and B. S. Chauhan.(1981).Changes in Inorganic and Organic Soil Phosphorus Fractions Induced by Cultivation Practices and by Laboratory Incubations1.Soil Science Society of America Journal,46(5),970-976. |
| MLA | M. J. Hedley,et al."Changes in Inorganic and Organic Soil Phosphorus Fractions Induced by Cultivation Practices and by Laboratory Incubations1".Soil Science Society of America Journal 46.5(1981):970-976. |
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