摘要
以1个中熟两系杂交稻两优培九和1个中熟粳稻CY-6为材料,在结实期不同阶段进行人工模拟倒伏处理,分析了不同时期倒伏对产量及品质指标的影响。结果表明,除糙米率、籽粒长宽比、糊化温度和胶稠度外,多数产量和稻米品质指标均受倒伏的影响而变劣。回归分析结果表明,CY-6和两优培九结实期倒伏发生每提早1d,分别造成2.71%和2.66%的产量损失,使结实率下降1.8和2.1个百分点,千粒重降低0.32和0.27g,精米率降低0.097和0.155个百分点,垩白粒率上升0.13和0.27个百分点,蛋白质含量增加0.021和0.024个百分点,并使得稻米食味品质降低。
The effects of lodging at different filling stages on grain yield and rice quality were investigated with a two-line hybrid rice Liangyoupeijiu and a conventional japonica rice CY-6.The results showed that except for brown rice rate,ratio of length to width,gelatinization temperature and gel consistency,almost all indices for yield and rice quality were significantly influenced by lodging and thus deteriorated.Regression analysis suggested that,lodging of CY-6 and Liangyoupeijiu one day earlier could cause 2.71% and 2.66% of yield loss,1.8 and 2.1 percentage points decrease of seed setting rate,0.32 and 0.26 g reduction of 1000-grain weight,0.097 and 0.155 percentage points decrease of milled rice rate,also it increased chalky grain rate by 0.13 and 0.27 percentage points,and protein content by 0.021 and 0.024 percentage points,and subsequently lowered the eating quality.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2011年第4期407-412,共6页
Chinese Journal of Rice Science
基金
江苏省农业科技自主创新专项资金资助项目[CX(10)226]
关键词
水稻
倒伏
结实期
产量
米质
rice
lodging
filling stage
yield
rice quality
