Abstract:

In order to increasing the seedling of survival rate which transplanting in different season in field. Through set up small plastic shed to grow bare-root seedling of ROC22 which were virus-free by tip culture. We compared the effects of different treatments of propagation and different set mode of vent at the top of the small plastic shed, transplanting days and season to survival rate and growth when bare-root seedling transplanting in field. Study on the methods to curtail periods of propagation, in the meantime increase rate of survival and growth when bare-root seedling transplanting in field. The results showed that, the survival rate difference between different treatments of propagation was not significant. On the day of transplanting at the top of the small plastic shed to set up vent with 1-2 cm, the transplantation survive rate were 93.5% which reached very significance level than contrast. It was suited to use small plastic shed to grow bare-root seedling transplanting in field which transplanting days between 20 days to 40 days and February to October each year. Fundamentally to reach curtail periods of propagation, to decrease the middle of annual ring and reduction in production costs.