最近,我们对景德镇市林科所西北部丘陵地栽植的池杉作了生长情况调查。该地海拔高50—150米,土壤为红壤,土层深60—100厘米,坡度15—20°。调查表明.池杉在上述丘陵地上可以生长,但随着立地条件和环境的不同,其生长情况有较大的差异。四旁栽植的9年生池杉,以池塘边的最好,平均树高12.3米,平 Recently, we conducted a survey of the growth of Ipomoea cetacean planted in the hilly area northwest of Linke, Jingdezhen. The elevation of 50-150 meters above sea level, the soil is red soil, soil depth 60-100 cm, slope 15-20 °. According to the survey, Ipomoea cunninghala can grow in the above hilly land, but with the difference of site conditions and environment, there are great differences in growth. Nine year-old cedar planted on all sides, the best by the pond, with an average height of 12.3 meters, flat