摘要
采用裂区试验,以品种生态类型为主区,品种为副区,选择中熟中粳(连粳7号、宁粳4号、武运粳27号)、迟熟中粳(武运粳24号、南粳9108、镇稻14)、早熟晚粳(武运粳23号、宁粳3号、镇稻11)共计9个粳稻品种为材料,以杂交籼稻(丰两优4号、徽两优6号、Y两优2号)为对照,研究不同粳稻生态类型在安徽沿江稻区的种植表现。结果表明,粳稻无论在营养生长期的苗高上,还是在最终株高上都显著低于杂交籼稻;粳稻叶片短而挺,稻穗直立且着粒密,表现较强的抗倒能力;在粳稻生长特性中,粳稻大田期的出叶速度明显快于杂交籼稻,同期抽穗的粳稻主茎叶片数多于杂交籼稻;粳稻的分蘖力明显弱于杂交籼稻,但成穗率显著高于杂交籼稻。在产量构成性状上,粳稻大部分是中穗型品种,有效穗数明显多于杂交籼稻,千粒重与杂交籼稻相当,正常情况下结实率高于杂交籼稻,属穗粒兼顾型品种,在精确定量栽培下容易取得高产。在产量表现上,迟熟中粳、中熟中粳与杂交籼稻相比具有产量优势,早熟晚粳不具有产量优势。
Field experiment was carried out to study the planting performance of different ecological type japonica rice along the Yangtze River in Anhui province.The results showed that：both in vegetative growth stage and maturity stage,the plant height are sig-nificantly lower than that of indica hybrid rice;japonica rice have short and stiff leaves,erect panicle and high grain density,strong lodging resistance;the leaf growth of japonica rice are significantly faster than indica hybrid rice,and the leave numbers are more than hybrid indica rice in the same heading stage;the tillering ability of japonica rice are weaker than indica hybrid rice,but the spike rate are significantly higher than indica hybrid rice;most japonica rice are middle panicle type varieties,and the effective panicles are significantly more than indica hybrid rice,the 1000-grain-weight are similar to indica hybrid rice,the seed setting rate of japonica rice are higher than that of indica hybrid rice,and easy to achieve high yield in precise and quantitative cultivation.Com-pared with indica hybrid rice,the late maturing and middle maturing middle season japonica rice have the advantage in yield,and the early maturing late season japonica rice have no advantage in yield.
出处
《中国稻米》
北大核心
2015年第2期50-53,共4页
China Rice
基金
现代农业产业技术体系建设专项(CARS-01-01A)
关键词
水稻
安徽沿江稻区
籼改粳
稻作生态型
rice
the Yangtze River in Anhui Province
indica rice
japonica rice
ecotype
