往年我县从各地收集来作四季柚砧木用的柚子种子,出苗率一般只有60～70％,差的不及30～40％。为了提高种子的出苗率,我们于1977～1979年对收集来的土袖子进行几种药剂处理试验。试验结果,用0.05％硼酸处理的,出苗率达90％,用0.1％亚硝酸处耶的,出苗率为86％,均比不处理的提高50％左右,长势也较强,效果很好。进行情况简述如下: In previous years, the county collected from all over the grapefruit seeds used for the four-season pomelo rootstocks. The germination rate was only 60-70% and the difference was less than 30-40%. In order to improve the germination rate of seeds, we conducted several drug treatment experiments on collected soil sleeves from 1977 to 1979. Test results, with 0.05% boric acid treatment, the emergence rate of 90%, with 0.1% nitrite Ye Ye, the emergence rate of 86%, were improved than untreated about 50%, the growth is also strong, the effect is very good. The briefing is as follows: