传统的万寿菊因全株有异味常受人冷落,而近几年发展起来的F_1万寿菊因花朵大、无异味,逐渐受人青睐。但其种子价格偏高,许多种植散户不得不算算经济账。从1999年开始,我试着用F_1万寿菊二代进行花卉生产,取得了较好的效果,且成本低廉,花质不变。要进行F_1万寿菊二代生产,必须有F_1万寿菊种子,而F_1万寿菊结种极少或根本见不到种 The traditional marigolds often suffer from bad smell due to the whole plant. In recent years, F_1 ​​marigolds have grown in popularity due to large flowers and no peculiar smell. However, the high price of its seeds has forced many planted retail investors into calculating economic accounts. Since 1999, I tried to use F_1 marigold second generation of flower production, achieved good results, and low cost, the same flower. To F_1 marigold second-generation production, must have F_1 marigold seeds, and F_1 marigold rarely or rarely see species