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为更好地指导花生科学施肥,结合测土配方施肥项目,于2012~2013年在河南省遂平县安排了10个点次的夏花生氮肥用量试验,对花生适宜氮肥用量进行了试验探讨。结果表明,施氮对产量具有明显作用,边际产量随施氮量增加呈递减趋势,最高产量施氮量与经济最佳施氮量因土壤及其肥力水平不同存在一定差异,最高产量施氮量4.95~8.63kg/667m~2,平均值6.85kg/667m~2,最佳施氮量4.76~8.45kg/667m~2,平均值6.49kg/667m~2。
In order to better guide the scientific fertilization of peanut, combined with soil testing and fertilization project, 10 points of summer peanut nitrogen fertilizer experiment were arranged in Suiping County of Henan Province from 2012 to 2013 to test the suitable amount of nitrogen fertilizer for peanut. The results showed that nitrogen application had a significant effect on the yield. The marginal yield showed a decreasing trend with the increase of nitrogen application rate. The highest nitrogen yield and the best nitrogen application rate were due to different soil and fertility levels. The highest nitrogen application rate 4.95 ~ 8.63kg / 667m ~ 2, the average value of 6.85kg / 667m ~ 2, the best nitrogen application rate of 4.76 ~ 8.45kg / 667m ~ 2, the average value of 6.49kg / 667m ~ 2.