Effects of different nitrogen level（0, 0.8, 1.6, 2.4 and 3.2 g per seedling tray）on seedling quality and grain yield of double early rice zhongjiazao17 and zhongzao39 with machine transplanted were studied. The results showed that progressively higher rates of ammonium sulfate caused a gradual increase in nitrogen content of rice seedlings, but decreased the seedling rate, and N accumulation had a tendency with increasing and then declining, and the maximum value was at N3 treatment. Effects of different N application on seedlings quality were different, the suitable N application could increase rice seedlings quality, the higher influence was obtained in 27 day age seedlings. The yield increased by 7.73% and 24.14% with 1.6 g N application per seedling dish constrast to no nitriogen treatment, which is related to its effective panicles. Considered the seedling quality and grain yield of machine transplanted rice, the N application per seedling dish was suggested from 1.6 to 2.4 g per tray.
CHEN Yang-1, CHEN Hui-Zhe-1, ZENG Yan-Hua-1, 2 , ZHU De-Feng-1*
. Effects of Different Nitrogen Application on Seedling Quality and Grain Yield of Machine Transplanted Double-season Early Rice[J]. China Rice, 2015
, 21(1)
: 56
-59
.
DOI: 10.3969/j.issn.1006-8082.2015.01.013
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