caa a22 4500 463208692 CHVBK 20180405153133.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10705-006-6275-7 doi (NATIONALLICENCE)springer-10.1007/s10705-006-6275-7 Yield and Nitrogen Balance of Greenhouse Tomato ( Lycopersicum esculentum Mill.) with Conventional and Site-specific Nitrogen Management in Northern China [Elektronische Daten] [Feifei He, Qing Chen, Rongfeng Jiang, Xinping Chen, Fusuo Zhang] In a greenhouse experiment with tomato, the N fertilizer reduction potential, tomato yield, N use and environmental implications were examined, in a comparison of site-specific N management with conventional N fertilization during three successive growing seasons from Feb. 2004 to Jun. 2005 in Shouguang, a typical greenhouse vegetable production region in Shandong province, Northern China. Fertilizer N recommendation with site-specific management was based on the difference between N target value and soil initial nitrate-N content (0-0.3m) with pre-sidedress soil nitrate testing (PSNT) and nitrate-N applied from irrigated water. The same basal dressing of 8, 11 and 8tha−1 of chicken manure (supplying 260, 360 and 316kgNha−1 in the first, second, and the third growing season, respectively) was broadcasted with conventional N, site-specific N and N from manure three treatments. The N target value with site-specific management was 300kgNha−1 in the first season, and then modified to 200kgNha−1 in the second and third seasons. In comparison with the fertilizer N applied rate with conventional N management (870, 720 and 630kgNha−1 in the three seasons, respectively), site-specific management reduced N fertilizer by 62, 78 and 80% without significant influences on tomato yield. The fruit yield of tomato with only basal dressing manure treatment was significantly decreased in the second season, compared with conventional N management. The nitrate content in 0-0.9m soil depth with site-specific management was much lower than that with conventional N management in all three seasons. The 53-83% of emitted nitrous oxide (N2O) was measured from transplanting to the first sidedressing in the three seasons, strongly related to drying-wetting soil process. As a result, the cumulative emission with site-specific management was only reduced by 38% than that with conventional N management throughout three seasons. Considering N release from mineralization and irrigation water, site-specific N management could efficiently control N application in intensive irrigated-vegetable production region. Thus, it is valuable to obtaining vegetable crops with high yield and economic return while alleviating the risk of environmental pollution. But it is necessary to optimize irrigation regime to minimize N loss through nitrate leaching and N2O emission. Springer, 2006 Environmental implication nationallicence Nitrate nationallicence Nitrogen fertilization nationallicence Nitrous oxide nationallicence Target value nationallicence Tomato nationallicence He Feifei College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut Chen Qing College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut Jiang Rongfeng College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut Chen Xinping College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut Zhang Fusuo College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut Nutrient Cycling in Agroecosystems Springer Netherlands 77/1(2007-01-01), 1-14 1385-1314 77:1<1 2007 77 10705 https://doi.org/10.1007/s10705-006-6275-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10705-006-6275-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- He Feifei College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut NATIONALLICENCE 700 1- Chen Qing College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut NATIONALLICENCE 700 1- Jiang Rongfeng College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut NATIONALLICENCE 700 1- Chen Xinping College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut NATIONALLICENCE 700 1- Zhang Fusuo College of Resources and Environmental Sciences, China Agricultural University, 100094, Beijing, China aut NATIONALLICENCE 773 0- Nutrient Cycling in Agroecosystems Springer Netherlands 77/1(2007-01-01), 1-14 1385-1314 77:1<1 2007 77 10705 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer