欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (24): 118-122.doi: 10.11924/j.issn.1000-6850.2014-0296

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

行/株距比对早晚稻产量和氮素吸收、 利用的影响

杨成春 林洪鑫   

  • 收稿日期:2014-02-11 修回日期:2014-04-08 出版日期:2014-08-25 发布日期:2014-08-25
  • 基金资助:
    “十二五”国家科技支撑计划“南方平原稻作农区农业面源污染防控技术集成与示范”(2012BAD15B03)；江西省农科院青年创新基金“行株距配置对双季稻不同株型品种产量的影响及其机理研究”(2010-CQN004)。

Effects of Ratio of Row Spacing to Intrarow Spacing on Yield and Nitrogen Accumulation and Utilization of Early and Late Rice

  • Received:2014-02-11 Revised:2014-04-08 Online:2014-08-25 Published:2014-08-25

PDF (PC)

424

摘要： 为双季水稻的合理配置行/株距比(RS/IS)提供理论依据。以早稻‘淦鑫203’、‘中嘉早17’和晚稻‘淦鑫688’、‘五丰优T025’为材料，在31.20万蔸/hm2密度下，研究了行/株距比对早晚稻产量和氮素吸收、利用的影响。早稻品种的产量以RS/2.8(30.0 cm×10.7 cm)和RS/2.0(25.0 cm×12.8 cm)处理较高，以RS/5.0(40.0 cm×8.0 cm)和RS/1.3(20.0 cm×16.0 cm)处理较低，而晚稻品种以RS/5.0和RS/2.0处理较高，以RS/2.8和RS/1.3处理较低。早稻氮素积累总量和氮肥表观利用率以RS/2.0处理较高，以RS/5.0处理较低，100 kg籽粒需氮量以RS/1.3处理较高，以RS/2.0处理较低；而晚稻氮素积累总量、100 kg籽粒需氮量和氮肥表观利用率以RS/2.8处理较高，以RS/5.0处理较低。可见，在该试验条件下，早晚稻4个品种采用25.0 cm×12.8 cm种植方式时的产量较高，采用20.0 cm×16.0 cm种植方式较低，氮素积累总量、100 kg籽粒需氮量和氮肥表观利用率以40.0 cm×8.0 cm较低。

关键词: 农业, 农业, 对外经济合作, 专家数据库, 德尔菲法, 层次分析法, 综合评价量表

Abstract: The aim of the study was to provide a theoretical basis for the configuration of ratio of row spacing to intrarow spacing (RS/IS). With early rice‘Zhongjiazao 17’and‘Ganxin 203’and late rice‘Ganxin 688’and‘WufengyouT025’as materials, the effects of RS/IS (Ratio of row spacing to intrarow row spacing) on yield, nitrogen accumulation and utilization were studied in the same planting density of 31.20×104 hills/hm2. The results showed that yield of early rice were higher in RS/2.8 (30.0 cm×10.7 cm), RS/2.0 (25.0 cm×12.8 cm) treatment and lower in RS/5.0 (40.0 cm×8.0 cm), RS/1.3 (20.0 cm×16.0 cm) treatment, while for late rice was higher in RS/5.0, RS/2.0 treatment and lower in RS/2.8, RS/1.3 treatment. For early rice, the total nitrogen accumulation and apparent utilization ratio of nitrogen were higher in RS/2.0 treatment and lower in RS/5.0 treatment, while for late rice, that were higher in RS/2.8 treatment and lower in RS/5.0 treatment. For early rice, nitrogen requirement for 100 kg grain production was higher in RS/1.3 treatment and lower in RS/2.0 treatment, while for late rice that was higher in RS/2.8 treatment, lower in RS/5.0 treatment. It was obvious that 4 varieties of early and late rice obtained higher yield in 25.0 cm×12.8 cm and lower yield in 20.0 cm×16.0 cm, and treatment 40.0 cm×8.0 cm had lower total nitrogen accumulation, nitrogen requirement for 100 kg grain production and apparent utilization ratio of nitrogen.