| Euonymus maackii is a kind of potential economic species and it has multiple values, for example:it not only can be resisting to drought, salt and alkali, but also can be used as Garden greening species. We now have little research on its seedling cultivation. In order to explore its seedling cultivation measures to make the seedling grow faster and of high quality, this experiment studied the different fertilizer treatments on growth and physiological effects of Euonymus maackii, in order to find out the optimal fertilization scheme suitable for the grow, in the same time to provide a theory basis for scientific fertilizer for nursery stock. By the methods of field experiment and indoor experiments, using completely randomized block design,30 strains seedling to a village, the experiment fertilize the Euonymus maackii in the ground. The experiment set three processing, a contrast and repeated three times.The experimental results show that:(1).Seedlings value-added:The multielement compound fertilizer had the most significant influence in fast-growing period (September), and the size of value-added was: D3>CK>D1>D2.(2).Accumulation of biomass:the root biomass accumulation was:D3>D1>D2>CK, the biomass accumulation of the trunk was:D3>D2>D1>CK, the branch biomass accumulation was:D3>D2>CK>D1, leaf biomass accumulation was:D3>D2>CK>D1, this suggests that the multielement compound fertilizer had the most significant influence on Euonymus maackii biomass accumulation. To root biomass accumulation, NPK compound fertilizer’ effect was not better than nitrogen application, but it was better than nitrogen application to the branches and leaves.(3). The accumulation of different elements in one year:Urea was most effective to root’s N, P element and leaf’s K, Fe element; NPK compound fertilizer was most effective to root’s Fe, Mg, Zn, Cu, Mn element and leafs N element; The multielement compound fertilizer was most effective to stem’s N, P, K, Fe element and leafs P element. This illustrated that NPK compound fertilizer could effectively promote the accumulation of root’s micronutrient, and the urea could effectively promote the accumulation of root’s macronutrient, while multielement compound fertilizer could effectively promote the stem’s macronutrient. The accumulation in leaf was influenced by many factors.(4).In April, NPK compound fertilizer could significantly improve the activity of SOD enzyme, the multielement compound fertilizer could significantly improve the activity of POD enzyme in stem, urea could significantly improve the CAT enzyme activity in the root. In May, the urea had a significantly effect on SOD enzyme in the root and leaf, and the NPK compound fertilizer could promote significantly the PPO enzyme activity in the root, and the multielement compound fertilizer could most significantly promoted the activity of SOD enzyme in the stem and POD enzyme and CAT enzyme in the root and stem. In July, multielement compound fertilizer could most significantly promote the activity of SOD enzyme in the root, stem and the leaf, POD enzyme in the root and the stem, PPO enzyme in the root and leaf; and other fertilization treatments were not obvious. In September, multielement compound fertilizer could significantly promote the activity of SOD enzyme and POD enzyme in the root, stem and leaf, and PPO enzyme in the root, stem. Other fertilization treatments were not obvious.(5).From the different growth stages of Euonymus maackii, fertilization can effectively promote the photosynthesis, and conducive to their growth. The photosynthesis indexes were influenced by fertilization, and fertilization could improve the net photosynthetic rate, transpiration rate, stomatal conductance, and intercellular CO2 concentration.The effect of the multielement compound fertilizer was the best, and NPK compound fertilizer was better than urea. For the photosynthesis indexes, the trends of different fertilization effect curve were similar, but the effects were different.In conclusion, applying the multielement compound fertilizer was beneficial to the growth of the Euonymus maackii, and it was the optimum fertilization scheme. |
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