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不同断根处理对云南拟单性木兰苗木生长影响的研究结果表明:切断苗木的侧根会对苗龄为5年生的云南拟单性木兰苗木地上部分的生长产生负效应而有利于促进新侧根的萌发,其影响程度与断根的强度有关。其苗木经断根处理后新根萌发较快,50天左右有新的侧根生出,其中以切断云南拟单性木兰大苗的全部侧根于切口喷200 mg.L-1的ABT生根粉的A处理的生根效果最好。断根3个月后每株苗木萌发的新侧根平均数为138.8根,根长≥5 cm的侧根平均数为38.4根,侧根深度达32 cm,最长侧根长度14.4 cm,其苗木的新根萌发已经较为充分,可以出圃种植而能保证有高的成活率。
The results of researches on the effects of different root-cutting treatments on the growth of saplings of Quercus liaotungensis showed that cutting the lateral roots of the saplings would have a negative effect on the growth of aerial parts of the seedlings of 5-year-old M. pseudoacacia seedling and promote the germination of new lateral roots , The extent of its impact and the strength of the root. The germination of its seedlings after root-cutting treatment was rapid, and new lateral roots were born after about 50 days. Among them, the ABT root-cutting powder treatment with 200 mg.L-1 The best rooting effect. The average numbers of lateral roots of each seedling germinated after root cutting for 3 months were 138.8 roots, the average number of lateral roots with root length ≥ 5 cm was 38.4, the lateral root depth was 32 cm and the longest lateral root length was 14.4 cm. Has been more adequate, you can plant nursery and can ensure a high survival rate.