The Influence of Different Seedling Raising Methods on the Growth of Robinia pseudoacacia Seedlings
To study the influence of different seedling raising methods on the growth of Robinia pseudoacacia seed-lings,taking Robinia pseudoacacia seedlings planted in Culai Mountain Forest Farm of Tai'an City as the research objects,three methods of sowing seedling,cutting seedling and container seedling were used to raise seedlings,and the effects of different seedling raising methods on the growth,root morphology and biomass of Robinia pseudoaca-cia seedlings were analyzed.The results showed as the following three aspects.(1)Under the mode of cutting seed-ling cultivation,the seedling height and ground diameter of Robinia pseudoacacia seedlings were significantly higher than those of sowing seedling and container seedling(P<0.05).And the height and ground diameter of sowing seedling were higher than that of container seedling(P<0.05).(2)The total root length,root surface area,root volume and root tip number of cutting seedling were significantly higher than sowing seedling and container seed-ling,followed by sowing seedling,and the container seedling was the lowest(P<0.05).(3)The stem and leaf bio-mass,root biomass,total biomass and root crown ratio of cutting seedling were higher than sowing seedling and con-tainer seedling.Sowing seedling was higher than container seedling(P<0.05).Under the cutting seedling raising method,the growth status of Robinia pseudoacacia seedlings is relatively ideal,which can promote the growth of Robinia pseudoacacia seedlings and improve the development status of their roots.