水稻品种生境敏感性研究

 依据水稻品种生境敏感性 ,将水稻品种分为生境敏感型品种、生境弱感型品种和生境钝感型品种。运用于评价水稻品种对生境反应敏感性的基本方法 ,评价了供试品种的生境敏感性 ,结果是 :(1)籼粳杂交稻生境敏感性大于粳稻品种 ;(2 )不同粳型品种对生境敏感性的表现是中熟晚粳 >早熟晚粳 >晚熟中粳 >中熟中粳 ;(3)在相同粳型的品种中 ,其生境敏感性表现也有较明显差别。文中还就偏迟熟水稻品种北移种植的原则等问题进行了讨论。

Study on Environmental Sensitivity of Rice Variety

Rice varieties can be divided into strong environmentally sensitive variety(ESV), weak environmentally sensitive variety(EWV) and environmentally insensitive variety(EIV)by environmental sensitivity of rice.The general method that was used to evaluate this environmental sensitivity(ES)of rice variety was put forward in this paper.ESs of varieties were evaluated as follows:(1)ES of indica japonica hybird rice(65002)was more sensitive than that of japonica rice;(2) The order of ESs of japonica type varieties was medium maturing late japonica variety>early maturing late japonica variety>late maturing medium japonica variety>medium maturing medium japonica variety;(3) There was a significant difference in ESs among varieties of the same japonica type rice,too.Some problems,such as the principles of rather late maturing rice planting northward,were also discussed at the end of the paper.