The results showed that the grain yield of the control (N omission plots) ranged fr om 6.8-7.4 t·ha -1 , indicating that indigenous N supply of soil was rather high.
结果表明 ,未施氮肥 (空白区 )的产量为 6.8～ 7.4t·ha- 1,表明试验田背景氮颇高。
参考来源 - 实时实地氮肥管理对水稻产量和氮素利用率的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
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