黑龙江省水稻冷害产量试验模型研究

根据黑龙江省主栽品种的特点,选用了47个水稻品种,在人工气候室内进行孕穗期低温处理,最后调查每一个水稻品种的产量。孕穗期的处理条件为15℃、湿度80%、光照1.0万～1.3万lx,处理时间是1～7 d。以7 d水稻产量为标准,针对生态区域把材料划分为耐冷、较耐冷和一般耐冷3种类型。建立黑龙江省区域、第一、二、三积温带水稻冷害产量试验模型Y=Y0×(aX+b)。

Study on Cold Injury Yield Testing Model of Rice in Heilongjiang

Forty-seven rice varieties mainly planted in Heilongjiang were planted in artificial climatic chamber and treat-ed at boot stage with low temperature,15 ℃,from one day to seven days,while maintaining humidity 80% and illumi-nance 1.0~1.3 × 104 lx and finally the yields per panicle were investigated.If taking the panicle yield treated for 7 days as standard,the entries could be classified into three types,i.e.cold tolerance,fairly cold tolerance,and generally cold tolerance.The cold injury yield testing model was established suitable for the first,second and third accumulative temperature zone in Heilongjiang as follows: Y= Y0 ×(aX+b).