The Effect of Humic Acid Fertilizer on the Tea Yield and Quality
This article conducted a field experiment in Ningxiang City,Hunan Province,using the tea variety'Baihaozao'as the experimental material to study the effect of humic acid fertilizer on the tea yield and quality.The results showed that under the premise of applying humic acid in combination,with the decrease of chemical fertilizer application,the density of tea buds,fresh weight of 100 buds,yield,water extract content,tea polyphenol content,and free amino acid content of tea showed an initial increase and then a decrease.Taking into account multiple factors,it is believed that the optimal tea yield and quality can be achieved when the conventional tea formula fertilizer is reduced by 25%and applied with 3000kg/hm2 Skoran humic acid organic fertilizer.