前言 林木生长所必需的养分主要来源于:土壤的矿化作用,大气的干湿沉降,凋落物和土壤动物、微生物的反馈,施肥及林木器官组织间的养分转让等五个主要方面。其中唯一可以比较容易地受人为控制的因素是施肥。毛竹林由于每年或每度(二年)的采伐,林地将损失大量养分元素。因此通过施肥及时补充毛竹生长所需的营养元素是获得毛竹林丰产、稳产的必要措施之一。 Foreword The nutrients needed for forest growth come from five main aspects: soil mineralization, atmospheric wet and dry deposition, litter and soil animals, microbial feedback, fertilization and nutrient transfer among forest organs and tissues. The only factor that can be easily controlled by humans is fertilization. Bamboo forest due to annual or per degree (two years) harvesting, woodland will lose a lot of nutrients. Therefore, fertilization through timely replenishment of the nutrients required for growth of bamboo is one of the necessary measures to obtain high yield and stable yield of bamboo forest.