
Agriculture, Journal Year: 2024, Volume and Issue: 14(12), P. 2319 - 2319
Published: Dec. 17, 2024
Exploring the temporal evolution dynamics of different soil organic nitrogen (N) components under water–N management practices is a useful approach to accurately assessing N supply and fertility. This information can provide scientific basis for precise water methods greenhouse vegetable production. The objective this study was investigate effects optimized irrigation on fractions, properties, crop growth. research conducted from 2017 2023 in field North China. Four treatments were applied: (1) high chemical application with furrow (farmers’ practice, FP); (2) no drip (DN0); (3) 50% FP (DN1); (4) 75% (DN2). volume 70% that irrigation. results showed (after seven years trials), compared FP, carbon (SOC), total N, use efficiency DN1 DN2 increased by 15.9%, 11.4%, 11.3% 7.7%, 47.2% 44.6%, respectively. However, there significant difference yield except DN0 treatment. Soil mostly form acid-hydrolyzed (AHN). After management, treatment significantly content ammonium (AN) amino sugar (ASN) AHN further analysis demonstrated SOC main factor regulating non-hydrolyzable (NHN), while regulatory factors acid (AAN) ASN component dry biomass efficiency, From time scale perspective, optimization scheduling, especially (reducing 30% amount applied 50%), crucial sustainable improvement fertility maintenance
Language: Английский