TY - JOUR
T1 - Effect of aerated drip irrigation and nitrogen doses on N2O emissions, microbial activity, and yield of tomato and muskmelon under greenhouse conditions
AU - Zhang, Qian
AU - Niu, Wenquan
AU - Du, Yadan
AU - Sun, Jun
AU - Cui, Bingjing
AU - Zhang, Erxin
AU - Wang, Yanbang
AU - Siddique, Kadambot H.M.
N1 - Funding Information:
This research was supported by the National Natural Science Foundation of China ( 52079112 and 51679205 ) and the Major Science and Technology Engineering Innovation Project of Shandong Province , China ( 2020CXGC010808 ).
Publisher Copyright:
© 2023 The Authors
PY - 2023/6/1
Y1 - 2023/6/1
N2 - Soil nitrous oxide (N2O) emissions are strongly affected by field practices, including irrigation and fertilization. This study investigated whether aerated drip irrigation (ADI) can enhance the soil environment, mitigate N2O emissions, and improve crop yields relative to conventional drip irrigation (DI). Tomato and muskmelon crops were grown in a solar greenhouse under different irrigation methods (DI and ADI) and nitrogen fertilizer rates (tomato: 0, 150, 200, and 250 kg N ha–1; muskmelon: 0, 150, and 225 kg N ha–1). The results showed that ADI increased soil temperature by 1.3–7.0 %, oxygen concentration by 1.9–3.2 %, and soil NH4+ and NO3– concentrations in the upper soil layers (0–60 cm) by 3.7–27.1 % and 3.6–51.5 % and decreased soil NH4+ and NO3– concentrations from 60 to 100 cm depth by 5.0–17.6 % and 1.9–18.9 %, relative to DI. However, ADI decreased soil moisture by 2.3–3.6 %. ADI also significantly increased soil microbial activity by 0.5–28.6 %. In addition, ADI and 150 kg N ha–1 significantly reduced yield-scaled N2O emissions (YSNES) and emission factors (EF), increasing tomato and muskmelon yields. The results of this study suggest that ADI combined with appropriate N application rates can improve soil productivity and mitigate N2O emissions.
AB - Soil nitrous oxide (N2O) emissions are strongly affected by field practices, including irrigation and fertilization. This study investigated whether aerated drip irrigation (ADI) can enhance the soil environment, mitigate N2O emissions, and improve crop yields relative to conventional drip irrigation (DI). Tomato and muskmelon crops were grown in a solar greenhouse under different irrigation methods (DI and ADI) and nitrogen fertilizer rates (tomato: 0, 150, 200, and 250 kg N ha–1; muskmelon: 0, 150, and 225 kg N ha–1). The results showed that ADI increased soil temperature by 1.3–7.0 %, oxygen concentration by 1.9–3.2 %, and soil NH4+ and NO3– concentrations in the upper soil layers (0–60 cm) by 3.7–27.1 % and 3.6–51.5 % and decreased soil NH4+ and NO3– concentrations from 60 to 100 cm depth by 5.0–17.6 % and 1.9–18.9 %, relative to DI. However, ADI decreased soil moisture by 2.3–3.6 %. ADI also significantly increased soil microbial activity by 0.5–28.6 %. In addition, ADI and 150 kg N ha–1 significantly reduced yield-scaled N2O emissions (YSNES) and emission factors (EF), increasing tomato and muskmelon yields. The results of this study suggest that ADI combined with appropriate N application rates can improve soil productivity and mitigate N2O emissions.
KW - Ammonium
KW - Emission factor
KW - Nitrate
KW - Yield
KW - Yield-scaled emission
UR - http://www.scopus.com/inward/record.url?scp=85153117681&partnerID=8YFLogxK
U2 - 10.1016/j.agwat.2023.108321
DO - 10.1016/j.agwat.2023.108321
M3 - Article
AN - SCOPUS:85153117681
SN - 0378-3774
VL - 283
JO - Agricultural Water Management
JF - Agricultural Water Management
M1 - 108321
ER -