| 长期定位施肥对潮土磷素形态和有效性的影响 |
| |
| 引用本文： | 吴璐璐,张水清,黄绍敏,杜伟,柳小琪,王晓红,吕家珑. 长期定位施肥对潮土磷素形态和有效性的影响[J]. 土壤通报, 2021, 52(2): 379-386. DOI: 10.19336/j.cnki.trtb.2020061102 |
| |
| 作者姓名： | 吴璐璐 张水清 黄绍敏 杜伟 柳小琪 王晓红 吕家珑 |
| |
| 作者单位： | 1.西北农林科技大学资源环境学院，陕西 杨凌 712100 |
| |
| 基金项目： | 国家重点研发计划项目（2017YFD0200205）、陕西省科技统筹创新工程项目(2016KTZDNY03-01)、陕西省水利科技计划项目(2016slkj-15)和西农博士科研启动项目(2452018041)资助 |
| |
| 摘 要： | 研究长期定位施肥对潮土各形态磷含量变化及磷有效性的影响,为潮土合理施用磷肥提供理论依据.长期定位施肥试验开始于1990年,设CK(不施肥)、N2(单施尿素)、N2P(不施钾肥)、N2K(不施磷肥)、N1PK(低量氮肥和磷钾肥)、N2PK(平衡施肥)、N3PK(中高量施肥)、N4PK(高量氮肥和磷钾肥)、N2PKM(化肥...
|
| 关 键 词： | 长期定位施肥 潮土 Tiessen磷分级 磷素形态 有效性 |
| 收稿时间： | 2020-06-11 |
Effect of Long-term Fertilization on Phosphorus Fraction and Availability in Fluvo-Aquic Soil |
| |
| Affiliation: | 1.College of Resources and Environment, Northwest A&F University, Yangling 712100, China2.Institute of Plant Nutrition and Resources and Environment, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China |
| |
| Abstract: | The changes of various fractions of phosphorus (P) separated with Tiessen-Moir method and its availability under long-term fertilization were investigated, in order to provide a theoretical basis for the reasonable application of P fertilizers in the Fluvo-aquic soil. Different fertilization treatments included no fertilization (control, CK), single application of urea (N2), no potassium (K) fertilizer (N2P); no P fertilizer (N2K), low amount of nitrogen (N) fertilizer combined with P and K fertilizers (N1PK), balanced fertilization (N2PK), medium or high amount of fertilizers (N3PK), high amount of N fertilizer combined with P and K fertilizers (N4PK), chemical combined with organic fertilizers (N2PKM), chemical fertilizers combined with corn straw returning (N2PKS). The correlation between soil P and available P and total P were analyzed. After 28 years of different fertilization treatments, the P fraction contents in the N2PKM treatment were decreased in the order of hydrochloric acid extractable P (HCl-P) > residual P (Residual-P) > sodium hydroxide extractable inorganic P (NaOH-Pi) > sodium hydroxide extractable organic P (NaOH-Po) > sodium bicarbonate extractable inorganic P (NaHCO3-Pi) > Water-soluble P (Resin-Pi)> sodium bicarbonate extractable organic P (NaHCO3-Po). Compared with CK, N2, and N2K treatments, N2P, N1PK, N2PK, N3PK, N4PK, N2PKM and N2PKS treatments significantly increased the contents of Resin-Pi, NaHCO3-Pi and NaOH-Pi, while the contents of NaHCO3-Po, NaOH- Po, HCl-P and Residual-P were not significant among different treatments. Except for NaOH-Po, the correlations among the contents of the other P fractions, available P and total P in the soil were significant. The contribution of Resin-Pi to available P was the most, indicating that Resin-Pi was the most effective source of P. The application of organic fertilizers significantly increased the contents of various P fractions in the soil, especially in the N2PKM compared with N2PK treatments. The contents of various P fractions in the N2PKS treatment were also significantly higher than those in the chemical fertilizer application treatments. The contents of soil medium and medium active P were significantly correlated with those of available P and total P in the organic fertilizer and straw treatments(N2PKS). Organic fertilizer or straw could be applied to fluvo-aquic soil to maintain a high percentage of soil available P pool. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《土壤通报》浏览原始摘要信息 |
|
点击此处可从《土壤通报》下载全文 |
|
