Long-term organic substitution management affects soil phosphorus speciation and reduces leaching in greenhouse vegetable production
文献类型： 外文期刊
作者： Zhang, Yinjie 1 ; Gao, Wei 2 ; Luan, Haoan 3 ; Tang, Jiwei 1 ; Li, Ruonan 4 ; Li, Mingyue 2 ; Zhang, Huaizhi 1 ; Huang, Shaowen 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr & Rural Affairs, Key Lab Plant Nutr & Fertilizer, Beijing 100081, Peoples R China
2.Tianjin Inst Agr Resources & Environm, Tianjin 300192, Peoples R China
3.Hebei Agr Univ, Coll Forestry, Baoding 071000, Peoples R China
4.Hebei Acad Agr & Forestry Sci, Inst Agr Resources & Environm, Shijiazhuang 050051, Hebei, Peoples R China
关键词： Phosphorus speciation; XANES; P-31-NMR; Phosphorus leaching; Partial least squares path modeling
期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.072； 五年影响因子：11.016 ）
ISSN： 0959-6526
年卷期： 2021 年 327 卷
页码：
收录情况： SCI
摘要： Excessive phosphorus (P) fertilizer and manure application is widespread in greenhouse vegetable production, causing P accumulation and groundwater pollution. The partial substitution of chemical fertilizer with organic amendments may effectively address this problem; however, little is known about P speciation and transformation at the molecular scale. Here, we combined P K-edge X-ray absorption near-edge structure, P-31 nuclear magnetic resonance spectroscopy, and chemical extraction to characterize P speciation and assess P leaching in a 10-year field experiment including chemical fertilizer (4CN) and replacement of half the chemical N fertilizer with manure (2CN+2 MN), straw (2CN+2SN), or combined manure and straw (2CN+1 MN+1SN) treatments. Compared to the 4CN treatment, organic substitution treatments resulted in 10.0-16.3% lower P accumulation and 57.3-102% higher organic P. Newberyite was detected in the organic substitution treatments, making up 6.9-13.0% of the total P, and the hydroxyapatite proportion was 7.3-15.6% lower than that in the 4CN treatment. Moreover, 2CN+2 MN treatment increased the orthophosphate diester content and labile P (Resin-P and NaHCO3-P) proportion, and 2CN+2SN treatment increased the orthophosphate monoester content and moderately labile P (NaOH-P) proportion. The 2CN+1 MN+1SN treatment exhibited the advantages of both manure and straw application. Partial least squares path modeling revealed that labile P was affected mainly by manure application and pH, and moderately labile P was influenced mainly by straw application and alkaline phosphomonoesterase activity. Compared with the 4CN treatment, the organic substitution treatments significantly decreased the total P leaching losses by 21.3-48.8%. Our results provide new insights into soil P transformation in response to different organic amendments. Combined manure, straw, and chemical fertilizer application (2CN+1 MN+1SN treatment) was a more effective practice for developing sustainable P management practices by comprehensively considering soil P transformation, vegetable yields, and environmental losses.
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