中国水稻科学

中国水稻科学 ›› 2011, Vol. 25 ›› Issue (6): 605-612.DOI: 10.3969/j.issn.10017216.2011.06.007

• 研究报告 • 上一篇    下一篇

稻田增氧模式对水稻籽粒灌浆的影响

赵锋1,2 张卫建1 章秀福2,*  王丹英2徐春梅2   

  1. 1 南京农业大学 应用生态研究所， 江苏 南京 210095； 2 中国水稻研究所 水稻生物学国家重点实验室， 浙江 杭州 310006；
  • 收稿日期:2011-06-20 修回日期:2011-08-23 出版日期:2011-11-10 发布日期:2011-11-10
  • 通讯作者: 章秀福2,*
  • 基金资助:

    国家科技支撑计划资助项目（2011BAD16B14）； 国家自然科学基金资助项目（31171502）； 浙江省科技专项资助项目（2008C020081）

Effects of  OxygenIncreasing Patterns in Paddy  Fields on Rice GrainFilling 

ZHAO  Feng 1, 2, ZHANG  Weijian 1, ZHANG  Xiufu 2,* , WANG  Danying 2 , XU  Chunmei 2   

  1. 1 Institue of Applied Ecology, Nanjing Agricultural University,  Nanjing 210095,  China; 2 State Key Laboratory of Rice Biology,  China National Rice Research Institute, Hangzhou 310006, China;
  • Received:2011-06-20 Revised:2011-08-23 Online:2011-11-10 Published:2011-11-10
  • Contact: ZHANG Xiufu2,*

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摘要： 为考查水稻产量形成和灌浆动态对不同稻田增氧模式的响应特征，于2008年和2009年，以国稻1号和秀水09为材料，长期淹水田块为对照(CK)，采用过氧化尿素（T1）、过氧化钙（T2）和干湿交替灌溉（T3）的稻田增氧模式，监测并采用Richard方程模拟水稻籽粒灌浆过程。 国稻1号产量依次为T3＞T1＞T2＞CK，秀水09产量依次为T3＞T2＞T1＞CK。2008年，国稻1号T1、T2和T3分别比CK增产11.6%、8.5%和13.6%，秀水09增产6.6%、9.2%和9.4%。2009年，国稻1号T1、T2和T3分别比CK增产16.8%、14.4%和23.0%，秀水09增产14.6%、17.2% 和17.4%。不同增氧模式对水稻灌浆过程的影响表现为：1）灌浆过程均符合Richards方程（拟合度>0.989）；2）强、弱势粒的最大粒重均有提高、粒重差异减少、灌浆同步性提高；3）两水稻品种的弱势粒均得到充分灌浆，其中增氧延长了国稻1号弱势粒的灌浆时间、增大了秀水09弱势粒灌浆速率。增氧模式下，弱势粒充分灌浆和结实率提高是水稻产量增加的主要原因。

关键词: 水稻, 增氧模式, 灌浆动态, 产量, 粒位

Abstract: The effects of oxygenincreasing patterns in paddy  fields on rice yield formation and grainfilling dynamics were investigated in a twoyear field experiment (2008-2009) under three oxygenincreasing patterns, including application  of urea peroxide as topdressing (T1), application of calcium peroxide as topdressing (T2) and drywet alternate irrigation (T3), with continuous submerged irrigation  as control (CK). The Richards equation was used to simulate  grain filling processes of two rice genotypes (Guodao 1 and Xiushui 09) under different oxygenincreasing patterns. Compared with the control (CK), the yields of Guodao 1 (indica)  under T1, T2 and T3 were increased by 11.6%, 8.5% and  13.6% in 2008 and 16.8%,  14.4% and  23.0%  in 2009; Similarly, the yields of Xiushui 09 (japonica)under T1, T2 and T3 were increased by 6.6%, 9.2% and 9.4%  in 2008， and 14.6%， 17.2% and 17.4% in 2009,   respectively. Rice grainfilling process fitted well with the Richards equation(R2>0.989), and the main effects of oxygenincreasing patterns on rice grainfilling were as follows: 1) Maximum grain weight of  inferior and superior grains  were both increased    with smaller difference in grain weight between the two genotypes   and      improved grainfilling synchronism; 2) Inferior grains of the two rice genotypes had a full grain filling process. The  oxygenincreasing  patterns extended the grainfilling  duration of   inferior grains of  Guodao 1,  and  increased the  grainfilling rate of inferior grains  of Xiushui 09. 3) Full grainfilling of the inferior   grains was mainly  contributed  to higher seed setting rate and yield of the genotypes under the  increasingoxygen  patterns in paddy fields . 

Key words: rice, oxygenincreasing pattern, grainfilling dynamics, yield, grain position

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