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为提高马尾松的造林成活率和促进早期生长 ,使其尽快郁闭成林 ,减少表土流失 ,在肥力中等的酸性红壤上 ,采用随机区组试验设计 ,进行了不同切根苗木造林效果及水土流失状况研究 ,试验设 7个处理 ,3次重复。结果表明 ,不同切根苗木的造林成活率、幼树地下、地上生长及水土保持效果均有很大差异。其中以芽苗移栽 3次切根苗木造林效果最好 ,造林成活率高达 98 5% ,侧根条数和生物量最多 (1年生达 12条和 2 1g) ,幼树生长最快 (第 3年抽高已达 1 0 8m) ,比常规大田苗木提前 1～ 2年郁闭 ,每公顷节约抚育费 30 0元 ,3年生幼林减少表土流失 4 95m3/hm2 ;其次是芽苗移栽 2次切根苗木 ,大田常规苗木造林效果最差
In order to improve the afforestation survival rate and promote the early growth of Pinus massoniana and to make the plantation closed canyon as soon as possible to reduce the loss of topsoil. On the moderately fertile red soil, randomized block design was used to study the effect of afforestation with different cuttings, Drainage research, the trial set 7 treatments, 3 repetitions. The results showed that there were great differences in afforestation survival rate, seedling underground, aboveground growth and soil and water conservation effects of different cut seedlings. Among them, seedling transplanting three times in the shoots was the best, afforestation survival rate was as high as 98.5%, number of lateral roots and biomass were the highest (12-year-old and 21g), and the sapling grew fastest Year pumping height has reached 1 0 8m) than the conventional field nursery stock 1 to 2 years ahead of canopy closure, conservation subsidy per hectare 30 0 yuan, 3-year-old young forest to reduce soil erosion 4 95m3 / hm2; followed by transplanting shoots twice Cut root nursery stock, field seedling afforestation effect of the worst