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切断侧根会对滇润楠苗木地上部分的生长产生负影响而有利于促进新根的萌发,其影响与断根的强度有关。采用一次全部切断侧根并在切口喷上生根粉,40天后有新根生出,3个月每株萌发的新根平均达222条、≥5 cm侧根数平均为74.8条、侧根深度28 cm、最长侧根13.6 cm,新根已基本发出完毕,因此3个月后就可以移栽而能保证成活率。
Cutting off the lateral roots of Yunnan Yunnan seedlings will have a negative impact on the growth of the ground is conducive to promoting the germination of new roots, and its impact on the strength of the root. The roots were cut off at one time and the rooting powder was sprayed on the incisions. New roots were born after 40 days. The average number of new roots per plant reached 222 at 3 months. The average number of lateral roots at 5 cm was 74.8 and the lateral root depth was 28 cm. Long lateral root 13.6 cm, the new root has basically been issued, it can be transplanted after 3 months and can ensure the survival rate.