茶叶科学2024，Vol.44Issue(1)：53-61,9.
喷施不同浓度海藻叶面肥对茶叶产量和品质的影响
Effects of Foliar Application of Different Concentrations of Organic-based Biostimulant Formulas on Yield and Quality of Tea(Camellia sinensis L.)in Red Soil Regions
摘要
Abstract
The purpose of this study was to evaluate the effect of different concentrations of organic-based biostimulant formulas(OBFs)on the yield and quality of tea(Camellia sinensis L.)in red soil regions.A field experiment was therefore conducted to investigate the nutrient uptake,yield,and quality of tea under different fertilization treatments.On the basis of conventional fertilization,foliar applications with the volume percentage concentration of OBFs including 0(T0),0.33% (T1),0.66% (T2),0.99% (T3),1.32% (T4),and 1.65% (T5)were set up.The results show that foliar application of OBFs improved agronomic characteristics,enhanced nutrient uptake of tea plants and improved the tea yield and quality.Compared with the T0 treatment,tea yield in the T1,T2,T3,T4 and T5 treatments increased by 1.4,1.4,1.3,2.1 and 2.4 times,respectively(P<0.05).In addition,as the concentrations of OBFs increased,the contents of total alkaloid,caffeine,and amino acids were first increased and then decreased.The contents of total alkaloid in the T1 and T2 treatments increased by 9.6% and 9.3% ,caffeine increased by 9.3% and 11.4% ,and amino acids increased by 5.0% and 12.4% in comparison with the T0 treatment,respectively(P<0.05).Meanwhile,under T1 and T2 treatments,nitrogen(N)uptake of tea leaves increased by 5.5% and 6.1% ,phosphorus(P)increased by 19.9% and 13.3% and potassium(K)increased by 20.9% and 10.0% ,respectively(P<0.05).Under T1 treatment,silicon(Si)increased by 14.8% .Furthermore,tea yield was positively correlated with bud density,100-bud weight,leaf area and chlorophyll content.Meanwhile,the contents of total alkaloid and caffeine were positively related to N,P,K and Si contents in tea leaves,respectively.Similarly,there was a significant and positive relationship between N,P and K contents in tea leaves and the contents of amino acids and essential amino acids.Overall,foliar application with 1.65% OBFs could increase tea yield,while foliar application with 0.33% and 0.66% OBFs could promote N,P,K and Si uptake in tea leaves,improve agronomic characteristics,which is beneficial for tea yield and quality.关键词
海藻叶面肥/茶叶产量/品质/养分吸收Key words
organic-based biostimulant formulas/tea yield/quality/nutrient uptake分类
农业科技引用本文复制引用
王利民,陈诗平,黄东风..喷施不同浓度海藻叶面肥对茶叶产量和品质的影响[J].茶叶科学,2024,44(1):53-61,9.基金项目
福建省农业科学院对外合作项目(DWHZ-2022-20)、福建省科技计划项目—省属公益类科研院所基本科研专项(2022R1025001)、福建省农业科学院英才项目(YC2019006)、福建省农业科学院项目(CXTD2021012-2) （DWHZ-2022-20）
