Effect of single application of slow-release fertilizer on the growth of sour jujube container seedlings
Jujube container seedlings were selected as test material to compare the growth of jujube container seedlings under different slow-release fertilizer application conditions in order to screen the optimal slow-release fertilizer application dosage and provide technical support for accurate fertilization during jujube container seedling cultivation.The results showed that there were significant differences in growth,physiology and chlorophyll content among jujube container seedlings treated with different slow-release fertilizer application dosages,among which the annual application of 75 g/bag slow-release fertilizer showed the best performance.Compared with CK1,the application of slow-release fertilizer significantly increased the seedling height,diameter,the number of secondary branches and the length of the longest secondary branch by 7.26％-29.53％,10.28％-20.46％,1.06％-26.46％and 1.24％-14.40％,respectively.Except for the seedling diameter,the other above three indicators showed a tendency of increase first and then decrease,and topped at 75 g/bag.Compared with CK1,the root projected area,root surface area,average root diameter,root volume,total fresh weight,fresh weight of the above part and fresh weight of roots was significantly increased by 53.81％,53.81％,60.85％,82.08％,50.73％,56.82％,and 53.12％,respectively,and soluble sugar content of leaves was also increased.The annual application dosage of 75 g/bag of slow-release fertilizer can be chosen as the recommended amount of application for jujube seedlings during cultivation.
万方数据
维普
