【摘要】 通过对强筋优质小麦农大 0 1 5抽穗期追氮试验的结果分析表明 :抽穗期追氮对产量的影响差异不显著 ,而对千粒重、角质率、黑胚率的影响达到极显著水平。抽穗期追氮能增加千粒重、提高角质率和降低黑胚率。抽穗期以追施 90 kg/hm2尿素的角质率最高、黑胚率最低 ,追施 2 2 .5 kg/hm2尿素的千粒重最高更多还原

【Abstract】 Through the analysis of the cultivation experiment of N fertilizing for the high quality wheat with strong gluten (Nongda015),the following results were obtained:the Nitrogen fertilizing does not affect product yield obviously,but has adramatic influence on 1000-grain weight ,cuticle ration,and ration of black embryo.The Nitrogen fertilizing in earing period increases the 1000-grain weight and cutcle ration in the mean time decreases the ration of black embryo.To get the highest cuticle ration and the lowest ration of black embryo,the optimum amount of urea is 90 kg/hm 2.When 22.50 kg/hm 2 urea is fertilized ,the 1000-grain weight gets the highest.更多还原