不同氮肥用量对机械条播小麦产量的影响

Effect of nitrogen fertilizer rate on yield of machine-drilled wheat

以‘扬麦16'为材料,在机械条播下,研究了氮肥用量及运筹技术对小麦产量的影响。结果表明:机械条播下,基蘖肥:穗肥=8:2,施氮量315 kg/hm^2时,小麦产量最高,增效明显;在施纯氮量为270 kg/hm^2水平下,适当提高穗肥比例至30%,可实现节氮增效效果。

A field experiment with wheat cultivar ＇ Yangmai 16＇ was carried out under machine drilling to investigate the wheat yield as influenced by nitrogen fertilizer rates and application ratios.The results showed that when the nitrogen fertilizer rate was 315 kg/hm^2 and the application ratio of basal fertilizer ＋ tillering fertilizer to heading fertilizer was 8：2,the wheat yield was the highest under machine drilling,having a significant effect;And when the nitrogen fertilizer rate was 270 kg/hm^2,appropriately increasing the proportion of heading fertilizer to 30% could cut down the nitrogen fertilizer rate and improve the effect.