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关于丛植造林,也称“植生组”造林。这种造林方法、主要是利用种内不同生育阶段的相互关系,造成种内群体的优势,增强与种间竞争的能力,达到本种生存之目地。为了探求这一理论与实践,我所于一九七一年在林改迹地上做了红松丛植与单植的对比试验。一、造林地概况我所于一九七一年春季在大、小驮子沟口进行了红松丛植造林试验,总面积33公顷,其中三株丛植区为30公顷,单株植苗区为3公顷,作为对比试验地。造林地为疏密度0.3以下的林改迹地,坡度5°—18°,土壤为山地暗棕壤,肥力中庸,湿度适中,呈弱酸性反应。地被物有山茄子、白花茶等。于头一年秋季进行横山割带整地,带宽2.5米,保留2.5米。
About planting pine forests, also known as “planting group” afforestation. This method of afforestation mainly utilizes the interrelationship of different stages of growth in the species, resulting in the advantages of species within the species and enhancing the ability to compete with species to achieve the purpose of survival. In order to explore this theory and practice, I conducted a comparative test of the Korean pine clump planting and single planting on the forest relics in 1971. I. Overview of Afforestation Land In our spring and autumn of 1973, we conducted a test of Korean pine cedar afforestation experiment with a total area of 33 hectares, of which three were covered with 30 hectares of plantation area, 3 hectares, as a comparative test ground. Afforestation for the density of less than 0.3 forest relics, slope 5 ° -18 °, the soil is dark brown soil, moderate fertility, moderate humidity, a weak acid reaction. Ground quilt with eggplant, white tea and so on. In the first year of fall Hengshan cut site preparation, bandwidth 2.5 meters, 2.5 meters reserved.