摘要
Abstract
To modify the physical and chemical properties of the soil and to improve the yield and quality of the tea,a field trial on two soil conditioners (i.e.,humic acid and weathered coal)was conducted.The conditioners wereadded to the soil at a tea plantation with a balanced use of nitrogenous,phosphorus and potassium fertilizer for theprevious 3 years.The results showed that the weight/volume of the soil was reduced by 7.22 % - 1 5.44%;theporosity,pH,organic matter,total nitrogen,total phosphorus,total potassium,alkali-hydrolyzable nitrogen,available phosphorus and potassium of the soil increased by 8.24% - 1 8.6 2 %,2.9 7 % - 1 8.6 1 %,8.8 6 % -2 7.22 %,9.80% - 45.1 0%,6.1 2 % - 40.82 %,4.5 2 % - 40.1 6 %,8.8 1 % - 45.7 5 %,0.6 2 % - 6 7.5 5 % and5.5 6 %-3 6.0 9 %,respectively;and,the yield and polyphenol content of the tea increased by 3.1 9 %-1 4.24% and5.2 1 %-1 0.7 3 %,respectively.Specifically,the application of the " chemical fertilizer + humic acid + weatheredcoal"showed the most significant effect on increasing the yield and polyphenols of the tea and the alkali-hydrolyzablenitrogen content in the soil.The application of the" chemical fertilizer+humic acid"appeared to be most significantin bringing about the decrease on the volume-weight and increases on the porosity,organic matter,total nitrogen,total phosphorus,total potassium,available phosphorus and potassium of the soil.And,the treatment with the "chemical fertilizer+weathered coal"was most effective in raising the pH of the soil.关键词
土壤调理剂/茶叶/产量/品质/土壤理化性状Key words
soil conditioners/tea/yield/quality/soil properties分类
农业科技
