Nitrogen uptake and its utilization by rice in paddy field of Taihu area

Abstract

Abstract: The effects of different amounts and kinds of nitrogen fertilizer on rice yield and its nitrogen uptake and utilization were studied on a main paddy soil (Wushan soil) of Taihu area. The results indicated that the optimal amount of nitrogen fertilizer was about 180 kg N·hm^-2 for rice production. Applying ammonium sulfate was better than applying urea for increasing rice yield. The efficiency of nitrogen fertilizer in this experiment was about 41.8～48.5%, and its loss was 22.8～38.1%.

Key words: Rice, Nitrogen fertilizer, Nitrogen utilization efficiency

CLC Number:

S143

SONG Yongsheng, FAN Xiaohui . Nitrogen uptake and its utilization by rice in paddy field of Taihu area[J]. Chinese Journal of Applied Ecology, 2003, (11): 2081-2083.

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