Study on the Fertilization Effect of Eucalyptus Microfertilizer in the Coastal Area of South Guangxi
[Objective]To study the fertilizer efficiency characteristics of a formula fertilizer mixed with trace elements and rare earths on eucalyptus nutrient deficient forests[Method]Used the 5-year-old eucalyptus deficient forest land and its control in the state-owned Bobai Forest Farm of Guangxi as the research object,8 experimental treatments were designed with the addition of copper,zinc,boron trace elements and rare earth micro fertilizers to analyze the changes in soil nutrients at different time periods.[Result]After fertilization,the soil pH of the forest land slightly decreased and showed an acidification trend.After fertilization,the organic matter,total potassium,available nitrogen,and available phosphorus in the forest soil decreased,while the total nitrogen,total phosphorus,available potassium,and trace elements such as copper,zinc,and boron in the soil increased;There were significant differences between fertilization treatments,and the tree height,individual volume,and volume of each treatment are arranged in descending order as follows:T7,T5>T2,T3,T4>T6,T1>T8(CK).Compared with the T8(CK)control,the average increase in eucalyptus tree height,diameter at breast height,and annual volume of each fertilization treatment is 31.82%,6.91%,and 45.33%,respectively.[Conclusion]The treatment with trace elements such as copper,zinc,boron,and rare earths resulted in the highest growth indicators of T7 eucalyptus trees.T1 treatment was not conducive to the absorption of K,P,and Mg elements,and manganese element has a significant response to the types and quantities of nutrients and rare earth elements in micro fertilizers.
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