一般露地宿根花卉虽然在休眠期前后的秋、春两季都能分栽繁殖,但秋季分栽要比春季优越。因为秋季分栽到翌春发芽,中间有一段较长的休养时间,到春季发芽时可以集中营养使新苗茁壮,生长旺盛。如果春季分栽,一方面出现养分流失,同时伤口需要愈合,另一方面又由于气温升高促使发芽,造成争夺养分现象,甚至蔫萎而死亡。这种现象以宿根花卉中的芍药最为突出。露地宿根花卉在一次定植后常3~4年间不再移 Although the open-field perennial flowers in the dormant period before and after the autumn and spring can be divided into two seasons of breeding, but the autumn planted superior to the spring. Because the autumn planted to the next spring sprouting, the middle of a longer rest time, when the spring germination can focus on nutrition so that the new seedlings grow vigorously. If the spring sub-plantation, on the one hand the loss of nutrients, while wounds need to heal, on the other hand due to temperature to promote germination, resulting in competition for nutrients, and even wilt wilt death. This phenomenon is most prominent among peony in perennial flowers. Open perennial flowers in a colonization often 3 to 4 years no longer move