Journal of Food, Agriculture and Environment
Vol 8,
Issue 3&4,2010
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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The influence of coated urea on yield and quality of vegetable crops and nitrogen balance in calcareous Chao soil
Author(s):
Yousheng Xiong 1*,
Jiafu Yuan 1, Ronggui Hu 2Recieved Date: 2010-06-18, Accepted Date: 2010-10-28
Abstract:A pot experiment was conducted in a glasshouse to investigate the effect of coated fertilizers in calcareous Chao soil on uptake and balance of nitrogen (N), yield and quality of vegetable crops. Results indicated that 2 kinds of texture of calcareous Chao soils applied with coated urea, increased the first seasonal celery (Apium graveolens L.) yield by 11.5~15.2% and N uptake by 5.9~9.5%. Ammonia volatilization was reduced by 14.2~14.9% while N loss of leaching and denitrification was reduced by 25.5-28.3%. N remained in soil was enhanced by 32.0~37.3% and the utilization efficiency of N increased by 20.1~27.9% compared with urea. The concentration of NO3–-N decreased by 44.2~58.9% while vitamin C obviously increased in celery shoots. The yield of lettuce (Lactuca sativa L.) increased by 14.4~35.2% (after effect).
Keywords:Coated fertilizer,
N balance, N utilization efficiency, celery, Apium graveolens L., lettuce, Lactuca sativa L.Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 3&4
Category: Agriculture
Pages: 655-659
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