近几年来,日本对于树木栽植株数的问题不断地研究和讨论。栽植株数的多少,各地都有一些不同的经验,如以柳杉为例,宫崎县的饫肥每公顷栽植一千株到一千五百株,而奈良县的吉野每公顷却栽植一万株到一万五千株,两者相差十倍左右.国有林的栽植株数一般为三千株。饫肥和吉野两地,主要是按照原 In recent years, Japan has continuously studied and discussed the issue of the number of trees planted. The number of planted plants, there are some different experiences everywhere, such as cedar, for example, fertilizer Miyazaki Prefecture per hectare planted a thousand to 1500, and Yoshino in Nara Prefecture but planted a hectare per hectare Strains to 15,000, a difference of about ten times the number of planted state-owned forests is generally 3,000.饫 fat and Yoshino two places, mainly according to the original