多年来我县从各地收集作四季柚砧木用的土柚种子,出苗率一般在60—70％,差的不及30—40％。为了提高种子的出苗率,我们于1977—1979年对收集来的土柚种子试用几种药剂处理,取得较好效果。 1977年11月30日将收集来的土柚种子,包括平阳蜜柚、本地土柚两个品种,随意数出2500粒,每组500粒,分成五组,除留一组对照不做任何处理外,其余分别用:(1)0.05％医用硼酸;(2)0.1％(含量85％)亚硝酸;(3)30ppm九二○;(4)温汤等溶液浸种12小时以后,把种子捞出洗净晾干,分组播在预先用六六六粉消毒,并施有人粪尿作基肥的沙壤土中,播后在种子上面撒一薄层火烧土,然 Over the years my county from all over the collection of soil pomelo seeds used for four seasons pomelo rootstocks, the emergence rate is generally 60-70%, poor less than 30-40%. In order to improve the germination rate of seeds, we tried several kinds of medicaments on the collected seeds of pomelo from 1977 to 1979, and achieved good results. November 30, 1977 will be collected to soil pomelo seeds, including Pingyang pomelo, local soil pomelo two varieties, 2500 random number, each group of 500, divided into five groups, with the exception of leaving a group of control without any treatment (2) 0.1% (content 85%) of nitrous acid; (3) 30ppm 9020; (4) After soaking the solution for 12 hours in warm soup and the like, remove the seeds Wash dry, sub-broadcast in advance with six six six powder disinfection, and applied human waste urine as a base of sandy loam soil, sow a thin layer of fire above the seeds sown soil,