Experimental warming reduces fertilizer nitrogen use efficiency in a double rice cropping system

• DOI: 10.17221/315/2019-pse
• Publication Date: 2019-10-22T08:02:21Z
• Authors: Taotao Yang; Yanhua Zeng; Yanni Sun; Jun Zhang; Xueming Tan; Yongjun Zeng; Shan Huang; Xiaohua Pan
• Keywords: Multiple cropping; Nitrogen fertilizer; Cropping system

Climate warming significantly affects nitrogen (N) cycling, while its effects on the use efficiency of fertilizer N are still unclear in agroecosystems. In present study, we examined for first time response to experimental using 15N labeling with a free-air temperature increase facility (infrared heaters) double rice cropping system. 15N-urea was applied micro-plots trace uptake and loss N. Results showed that moderate (i.e. an 1.4°C 2.1°C canopy early late rice, respectively) did not affect grain yield biomass. Warming reduced from both increased soil. The recovery rate 35.5% control 32.3% treatments 47.2% 43.1% respectively. season, whereas it 38.9% 42.7% Therefore, suggest climate may reduce losses environment paddy.