排灌机械工程学报2025，Vol.43Issue(5)：533-540,8.DOI:10.3969/j.issn.1674-8530.24.0002
氮肥三阶段施用对春茶产量与品质影响的试验研究
Experimental study on impact of three stages application of nitrogen fertilizer on yield and quality of spring tea
摘要
Abstract
To evaluate the effect of different nitrogen fertilizer application patterns on the yield and quality of spring tea,the ″Maolv″tea cultivar was selected as the experimental object.The distribution ratios of nitrogen fertilizers in the autumn,spring and summer stages,namely T1,T2 and T3,were es-tablished as 5∶3∶2,6∶2∶2 and 4∶3∶3,respectively.Four nitrogen application amounts,namely N1,N2,N3 and N4,were set as 300,375,450 and 525 kg/hm2,respectively.Twelve treat-ments combinations were designed and compared with the conventional treatment in the tea garden as the control(CK)to assess fertilization efficacy.The effects of different treatments on spring tea yield(measured by hundred-bud weight)and quality parameters(including tea polyphenols,amino acids and the ratio of polyphenols to amino acids)were systematically analyzed.The results show that when the proportion of nitrogen application in autumn is not less than 50%of the total nitrogen application,the mass of hundred-bud quality reaches its maximum of 13.04 g when the total nitrogen application amount increases to N3(450 kg/hm2).Further increasing the total nitrogen application,however,re-sults in a decrease in the mass of hundred-bud quality.Simultaneously,as the increase of the total ni-trogen application amount,the content of tea polyphenols decreases to some extent,while the content of amino acids increases.At N3 level,the mass ratio of tea polyphenols decreases to the lowest of 176.49 mg/g,and the mass ratio of amino acids increases to the highest of 25.22 mg/g.When the nitrogen fer-tilizer distribution ratio remains constant,the mass of hundred-bud quality initially increases and sub-sequently decreases as the increase of the total nitrogen application amount.Conversely,when the total nitrogen application amount is constant,the comprehensive effects of both yield and quality reach the best under the T2 distribution ratio level,with the minimum ratio of tea polyphenols to amino acids being 7.00.Based on these findings,the recommended optimal fertilization scheme is as follows:the distribution ratio of nitrogen fertilizers in the autumn,spring and summer stages is 6∶2∶2,and the total nitrogen application amount should be 450 kg/hm2.关键词
茶树/施氮总量/氮肥分配比例/品质/百芽质量/酚氨比Key words
tea plant/total nitrogen application/nitrogen allocation ratio/quality/hundred-bud quality/phenol ammonia ratio分类
农业科学引用本文复制引用
宋佳伟,胡永光,潘庆民,鹿永宗,金矿..氮肥三阶段施用对春茶产量与品质影响的试验研究[J].排灌机械工程学报,2025,43(5):533-540,8.基金项目
江苏省重点研发计划项目(BE2021340) （BE2021340）
