追施氮肥对皖麦38经济性状及产量的影响

Effect of Nitrogen Fertilizer on Wheat Variety-Wanmai 38 Yield Component

研究了不同追施氮肥时期和追施氮肥量对优质强筋小麦皖麦38经济性状和产量的影响,结果表明:不同追施氮肥时期和追氮水平对皖麦38经济性状和产量有明显的调控作用,当基施纯氮111kg/hm2时,追施氮肥时期以拔节期最优;拔节期追施氮肥量与产量呈二次曲线关系,追施氮肥量在100～144.95kg/hm2,经济性状协调且产量高。

The effect of the application of the different levels of nitrogen fertilizer in the different stages on Wanmai 38 yield component was studied, The experimental results indicated when N fertilizer as base fertilizer was 111 kg/hm^2,the best stage of nitrogen fertilization was in elongation stage and the yield components was coordinate while yield was high. The relationship between yield and level of nitrogen fertilization in elongation stage was parabola-ship,within the nitrogen fertilization of 100～144.95 kg/hm^2, the yield components was coordinate with both yield was high.