【摘要】 通过以竹青等耐寒性品种作对照,对耐寒品种云恢72及其杂交后代的耐寒性进行鉴定;并通过对2003年试验材料的干、冻前、冻后的电导率测定和冻害对茎、根重影响的调查,筛选出耐寒性极好且农艺性状优良的新品种直254和1401。更多还原

【Abstract】 In this text,the cold-resistance of cold-resistant rice variety-Yuhui 72 and its filial generation were identified contrasted with Zhuqing,Earlier indica rice14 and other varieties with the cold resistance.In 2003,the conductance rates of dry before freezing and after freezing were measured,the investigation of the influence on the root and stem was carried out with the freeze injury.The result indicated that new variety,Zhi 254 and 1401,was with extremely good cold resistance and with fine agricultural property.更多还原