Effects of foliar fertilizers on the growth of vegetable sweet potato under different fertilization levels
In order to explore the effects of different foliar fertilizers and nitrogen reduction fertilization on the growth of vegetable sweet potato,the effects of different fertilization levels and different foliar fertilizer applications on the growth status,relative chlorophyll content of leaves,eating quality,branch number and yield of vegetable sweet potato were studied by pot experiment and different treatments.The results showed that foliar fertilizer rapeseed cake fertilizer had the best effect on the yield and branch number of vegetable sweet potato,and amino acid fertilizer 2 and Huaduoduo were second.Rapeseed cake fertilizer and amino acid fertilizer 1 had the best effect on improving quality,but the effect of amino acid fertilizer 1 on yield improvement was not significant.The yield and branch number of nitrogen reduction fertilization combined with foliar rapeseed cake fertilizer were comparable with those of conventional fertilization.