中国稻米

• 专论与研究 • 上一篇    下一篇

氮肥用量对优质粳稻产量、品质及氮肥利用率的影响

  1. 1 辽宁省盐碱地利用研究所,辽宁 盘锦 124010;2 辽宁省水土保持研究所,辽宁 朝阳 122000
  • 出版日期:2019-09-20 发布日期:2019-09-20
  • 基金资助:

    国家重点研发计划(2017YFD0300700)

Effects of Nitrogen Application Rate on Yield, Quality and Nitrogen Use Efficiency of High Quality Japonica Rice

  • Online:2019-09-20 Published:2019-09-20

摘要:

选取了具有代表性的不同类型优质粳稻品种沈农315和沈稻11号为试验材料,研究了施氮量对水稻产量、氮肥利用率以及稻米品质的影响。结果表明,当氮肥施用量为210 kg/hm2时,2个品种的有效穗数和每穗粒数均较大,产量最高,分别达9.82 t/hm2和9.15 t/hm2;在氮肥施用量为180 kg/hm2时,2个品种的氮肥利用率达到最大值,分别为38.78%和39.65%,显著高于其他处理。稻米蛋白质含量、直链淀粉含量和食味值受施氮量的影响达显著或极显著水平,蛋白质含量、脂肪酸含量和食味值受品种与施氮量交互作用的影响达显著水平。

关键词: 施氮量, 氮肥利用率, 产量, 品质

Abstract:

A field experiment was carried out to study the effects of nitrogen application rate on yield, nitrogen use efficiency and grain quality of rice by using Shennong 315 and Shendao 11 as materials. The results were as follows: when nitrogen application rate was 210 kg/hm2, the effective panicles, grain number per panicle and yield of the two varieties were both the highest, the yield were 9.82 t/hm2 and 9.15 t/hm2 respectively; when nitrogen application rate was 180 kg/hm2, the nitrogen use efficiency of the two varieties was 38.78% and 39.65% respectively, which was significantly higher than that of other treatments. The protein content, amylose content and taste value of rice were significantly affected by nitrogen application rate; the protein content, fatty acid content and taste value were significantly influenced by the interaction between variety and nitrogen application rate.

Key words: nitrogen application rate, nitrogen use efficiency, yield, grain quality

中图分类号: