林缘连翘生长结实情况研究

Study on Growth and Fruiting of Forsythia Suspensa in the Edge of Forest

林缘连翘是森林被破坏后形成的次生灌木林,是森林演替过程中一种较低级、不稳定的以灌木为主体的植被类型,生长在森林下缘,极易受人畜破坏。笔者对山西省中条山国有林管理局固县林场的连翘进行调查研究,结果表明,以提高果实产量为主要经营目的的林缘连翘,应选择阳光充足的阳坡或半阳坡,海拔700 m^1 300 m,土层厚度≥30 cm,坡度<25°的中、下坡位进行经营。并采取科学的管理措施,如,补植、抚育、整形修剪、复壮和施肥,抚育间隔期以3 a^5 a为宜。

Forsythia suspensa in the edge of forest was a kind of secondary shrub forest formed after the forest was destroyed.It was a lower and unstable shrub-dominated vegetation type in the process of forest succession which grew in the lower edge of the forest and was easily destroyed by livestock.Forsythia suspensa in Guxian forestry farm of national forest administration bureau of Zhongtiao mountain was investigated and studied.Results showed that Forsythia suspensa in the edge of forest with improving fruit yield as the main management purpose should be planted in sunny or semi-sunny slopes with elevation at 700 m^1 300 m,soil layer above 30 cm and slope degree below 25°in the middle and lower slopes.Scientific control measures should be taken such as replantation,tending,pruning,rejuvenation and fertilization.The Intervals of tending should be 3 a^5 a.