Effects of long-term partial substitution of inorganic fertilizer with pig manure and/or straw on nitrogen fractions and microbiological properties in greenhouse vegetable soils

作者：Shuo Yuan, Ruonan Li, Yinjie Zhang, Haoan Luan, Jiwei Tang, Liying Wang, Hongjie Ji, Shaowen Huang · 发表于：Journal of Integrative Agriculture · 年份：2024 · DOI：10.1016/j.jia.2024.02.017 · 被引用次数：19 · 研究领域：Soil Carbon and Nitrogen Dynamics、Phosphorus and nutrient management、Agriculture, Soil, Plant Science

Partial substitution of inorganic fertilizers with organic amendments is an important agricultural management practice. An 11-year field experiment (22 cropping periods) was carried out to analyze the impacts of different partial substitution treatments on crop yields and the transformation of nitrogen fractions in greenhouse vegetable soil. Four treatments with equal N, P2O5, and K2O inputs were selected, including complete inorganic fertilizer N (CN), 50% inorganic fertilizer N plus 50% pig manure-N (CPN), 50% inorganic fertilizer N plus 25% pig manure N and 25% corn straw N (CPSN), and 50% inorganic fertilizer N plus 50% corn straw N (CSN). Organic substitution treatments tended to increase crop yields since the 6th cropping period compared to the CN treatment. From the 8th to the 22nd cropping periods, the highest yields were observed in the CPSN treatment where yields were 7.5-11.1% greater than in CN treatment. After 11-year fertilization, compared to CN, organic substitution treatments significantly increased the concentrations of NO3--N, NH4+-N, acid hydrolysis ammonium-N (AHAN), amino acid-N (AAN), amino sugar-N (ASN), and acid hydrolysis unknown-N (AHUN) in soil by 45.0-69.4%, 32.8-58.1%, 9.3-66.6%, 62.0-69.5%, 34.5-100.3%, and 109.2-172.9%, respectively. Redundancy analysis indicated that soil C/N and OC concentration significantly affected the distribution of N fractions. The highest concentrations of NO3--N, AHAN, AAN, AHUN were found in the CPSN treatment. Organ...