Effects of various fertilizer combinations on leaf growth and mineral elements in cherry sapling
[Objective]The objective of this study was to investigate the impact of different fertilizer combinations on leaf growth and mineral element content in Meizao cherry trees,laying a theoretical founda-tion for optimal fertilization practices in cherry plantations in Lanzhou.[Method]One-year-old Meizao cherry trees were selected as the experimental subjects.Ten distinct fertilizers were utilized,and fertiliza-tion treatments were administered at the germination stage,new shoot vigorous growth stage,and full-bloom stage,respectively.Chlorophyll content,leaf area,photosynthetic parameters,and leaf mineral ele-ment levels were assessed to examine the effects of various fertilization treatments on cherry leaf growth and mineral element content.[Result]The results revealed that,with the exception of July 11,treatment T9 exhibited the highest chlorophyll content during other periods.The average SPAD value of leaves(48.19)was 3.75%greater than that of the control group(CK)(46.45).The net photosynthetic rate of leaves in treatment groups was notably higher,with a value of 9.42 μmol/mol,representing a 1.97-fold increase compared to CK.Treatment T3 demonstrated the most significant increase in copper,iron,and zinc content in the leaves,showing increments of 25.97%,13.53%,and 36.35%over CK,respectively.Furthermore,the highest nitrogen and phosphorus content in cherry leaves was observed in treatment T9,with values 0.64%and 15.56%higher than CK,respectively,followed by T2.Potassium,calcium,and manganese lev-els in the leaves of treatments T9 and T10 were markedly higher than in the other treatments,at 10 039.68,10 024.59,1 776.18,1 784.01,167.06 and 89.04 mg/kg,respectively.[Conclusion]In conclusion,the fer-tilizer combination in treatment T9 proved to be the most effective for promoting cherry leaf growth.Fur-thermore,through correlation analysis of leaf area,photosynthetic characteristics,and leaf mineral elements,it was determined that the leaf area of cherry leaves exhibited significant correlations with photosynthetic pa-rameters,as well as mineral elements such as calcium and copper.
cherryfertilizer combinedphotosynthesisleaf mineral elements
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