欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (9): 91-95.

• 农学 农业基础科学 • 上一篇    下一篇

施氮量及施氮方式对‘临草2号’干物质积累及鲜干草产量的影响

鲁晋秀 杨峰 党建友   

  • 收稿日期:2010-12-14 修回日期:2011-01-21 出版日期:2011-04-25 发布日期:2011-04-25
  • 基金资助:

    山西省科技攻关项目;山西省农科院攻关项目

Effect of N Application on Dry Matter Accumulation, Fresh and Dry Yields of ‘Lincao 2’

  • Received:2010-12-14 Revised:2011-01-21 Online:2011-04-25 Published:2011-04-25

PDF (PC)

1026

摘要：

研究大田条件下施氮量和施氮方式对‘临草2号’干物质积累及鲜干草产量的影响。结果表明，施氮使‘临草2号’干物质积累量和鲜干草产量明显增加，且随施氮量增加干物质积累量和鲜干草产量呈增加趋势，施氮量在300 kg/hm2时，鲜干草产量最高，氮肥利用效率最高，再增施氮肥干物质积累量和鲜干草产量变化不明显；施氮量相同时，氮肥采用70%基施+30%追施比一次基施更有利于‘临草2号’干物质积累，提高鲜干草产量。因此，在施纯氮300 kg/hm2基础上，氮肥采取70%基施+30%追施，可实现‘临草2号’高产高效栽培。

关键词: 天津, 天津

Abstract:

Effect of N application on dry matter accumulation, fresh and dry yields of ‘Lincao 2’ were studied under field experiment. The results showed that, dry matter accumulation, fresh and dry yields of ‘Lincao 2’ were increased with N application rate. ‘Lincao 2’ had the highest fresh and dry yields, and N fertilizer had the most use efficiency when N application rate was 300 kg/hm2. Dry matter accumulation, fresh and dry yields changed little at more N application rate. 70% N as basal and 30% N drop dressing at jointing stage was favorable for dry matter accumulation, fresh and dry yields increasing of ‘Lincao 2’ than all N as basal, when at the same application N rate. High yields and high efficiency cultivation of ‘Lincao 2’ could be realized under N application at 300 kg/hm2 (70% basal and 30% top dressing at jointing stage).