为了适应我省红壤丘陵地区杉木用材林基地建设的需要,1964年春,我们于南昌梅岑地区设置杉木造林密度定位试验区,研究红壤丘陵地区杉木造林密度和间伐利用技术。现将十年来试验结果整理如下。一、试验区自然概况南昌梅蛉地区,地理分布属亚热带中部,为杉木一般产区。试验区海拔高度约70米,位于丘陵中下部,坡度10—20°,坡向西北。土壤为花岗岩红壤, In order to meet the needs of the construction of the Chinese fir woodland base in the hilly red soil region in the province, in the spring of 1964, we set up the test area of ​​density for afforestation experiment in the area of ​​Meitzen in Nanchang to study the techniques of afforestation density and thinning of Chinese fir in hilly red soil region. Ten years now test results are summarized below. First, the pilot area of ​​natural profiles Meizhou Nanchang, the geographical distribution of the subtropical central China fir general production area. The test area is about 70 meters above sea level, located in the middle and lower hills, the slope of 10-20 °, northwest slope. Soil is granite red soil,