赣榆县水稻精确施氮试验研究

为建立水稻精确施肥技术指标体系,提高氮肥利用率,特进行水稻精确施氮试验。试验结果表明,水稻精确施氮,氮肥当季利用率平均提高5.29%左右,达到30%以上,节省纯氮用量4.7～5.0 kg/667 m2,增产1.9～38.3 kg/667 m2。

Study on Precise Application of Nitrogen to Rice at Ganyu County

The experiment on precise application of nitrogen fertilizer to rice showed that the precise application of nitrogen could increase utilization efficiency at current season by 5.29% on average and reach 30%.The fertilizer could be saved by 4.7 to 5.0 kg/667 m2 and the yield increased by 1.9 to 38.3 kg/667 m2.