Study on the growth of wild seedlings of Symplocos sumuntia by artificial transplantation
In order to accelerate the recovery of Symplocos sumuntia resources,the wild seedlings were used as research objects to compare the survival rate and growth amount of artificial transplanting and natural growth.The results showed that the survival rate of seedlings in the third year of artificial transplanting was 92.22%,which was 8.33%higher than that of 83.89%of natural growth without transplanting.The average number of lateral branches of the seedlings reached 4.80,with a ground diameter of 1.61 cm,and new shoots of 41.05 cm,which increased by 134.15%compared to the natural growth of lateral branches,ground diameter increased by 65.98%,and new shoot growth amount increased by 44.54%.Seedlings planted on the upper slopes of the mountain were 4.20%and 6.20%less than those planted on the middle and lower slopes.The number of lateral branches decreased by 1.17 and 2.00,the diameter thickness decreased by 0.10 cm and 0.30 cm,and the length of new shoots decreased by 7.90 cm and 10.37 cm,all of which reached significant difference at 0.01 level.This showed that the wild seedlings have a high survival rate and rapid growth after artificial transplanting.As for the deep soil layers,the lower slope is better than the middle one.The study is of great significance for accelerating the recovery and sustainable development of S.sumuntia resources,which is worth promoting and applying in the protection of S.sumuntia resources.
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