水稻恶苗病苗在大田移栽后的恢复情况观察

从徒长苗占有７０～８０％的苗床中选择徒长程度不同的各类型苗，分别调查了带菌率，并移栽到大田后，追踪调查了各类型苗的死亡率。结果：死亡率与秧苗的徒长程度有关。苗高增率与死亡率有显著的正相关关系，即使足带菌苗，若徒长不严重，其死亡率就低，恢复率就高。

OBSERVATIONS OF THE SITUATION OF RECOVERY ON RICE SEEDLINGS OF BAKANE DISEASE TRANSPLANTED IN THE RICE FIELD

All kinds of rice ceedlings of the difference of leggy extent chosen from the rice Feedl lug bed where there were 70%-80% leggy seedlings had been separatedly investingated bacteria-carsier rate, and they had been myestigaed death rate af ter they were transplanted in the rice field. Result revealed that the death rate was related with the leggy extent of rice seedlings. There was a signifieant relationship of positive wire between the growth rate of the height of rice secdlings and death rate, even though it was a seedling of bacteria-carrier, if spindling was not serious, its death rate was low and its recovery rate wad high.