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中国农学通报 ›› 2021, Vol. 37 ›› Issue (8): 79-83.doi: 10.11924/j.issn.1000-6850.casb2020-0271

所属专题: 园艺

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

滇南茶园适产养分临界值施肥体系研究

陈检锋1(), 刘俊2, 何正海3, 陈华1, 尹梅1, 王志远1, 王伟1, 付利波1()   

  1. 1云南省农业科学院农业环境资源研究所,昆明 650205
    2云龙县农业农村局,云南云龙 672708
    3富宁县农业机械化技术推广站,云南文山 663400
  • 收稿日期:2020-07-20 修回日期:2020-12-10 出版日期:2021-03-15 发布日期:2021-03-16
  • 通讯作者: 付利波
  • 作者简介:陈检锋,男,1985年出生,浙江青田人,副研究员,硕士研究生,主要从事植物营养和农业环境研究。通信地址:650205 云南省昆明市盘龙区北京路2238号 省农科院环资所,Tel:0871-65891333,E-mail: jianfchen@163.com
  • 基金资助:
    国家十三五重点研发项目“茶园化肥农药减施增效技术集成研究与示范”(2016YFD0200900)

Fertilization System of Nutrient Critical Value for Optimum Yield of Tea Plantation in South Yunnan

Chen Jianfeng1(), Liu Jun2, He Zhenghai3, Chen Hua1, Yin Mei1, Wang Zhiyuan1, Wang Wei1, Fu Libo1()   

  1. 1Institute of Agricultural Environment and Resources, Yunnan Academy of Agricultural Sciences, Kunming 650205
    2Agricultural and Rural Bureau of Yunlong County, Yunlong Yunnan 672708
    3Agricultural Mechanization Technology Promotion Station of Funing County, Wenshan Yunnan 663400
  • Received:2020-07-20 Revised:2020-12-10 Online:2021-03-15 Published:2021-03-16
  • Contact: Fu Libo

摘要:

为研究滇南茶树精准施肥量,采用田间试验,研究了当季施肥量、土壤养分与茶叶产量、净产值的关系。结果表明:各试验点产量表现最好的均为N2P2K2处理;不同试验点缺肥处理产量与土壤碱解氮、速效磷、速效钾含量之间呈正相关关系,土壤养分校正系数与土壤速效养分含量间的回归方程为:yN=1.888-0.30ln(xN),yP=1.551-0.58ln(xP),yK=0.786-0.13ln(xK);根据最佳经济施肥量和茶园土壤中养分供给量,确定茶树适产养分临界值:滇南茶园适产养分临界值范围N (412.5±25.0) kg/hm2,P2O5 (88.5±27.1) kg/hm2,K2O (180.2±27.7) kg/hm2

关键词: 茶园, 茶叶产量, 氮磷钾, 土壤养分校正系数, 适产养分临界值

Abstract:

To study the precision fertilization amount of tea plant in south Yunnan, a field experiment was conducted to investigate the relationship of the seasonal fertilizer application amount and soil nutrients with tea yield and net output. The results showed that the highest yield of tea was obtained by treatment N2P2K2 in different experiment sites. In different sites, soil nutrients (alkaline hydrolyze nitrogen, available phosphorus and available potassium) and tea yield of fertilizer deficiency treatment had positive correlations. The regression equations between soil nutrient correlation coefficient and soil nutrient contents could be expressed as: yN=1.888-0.30ln(xN), yP=1.551-0.58ln(xP) and yK=0.786-0.13ln(xK). The nutrient critical value for optimum tea yield in south Yunnan was calculated according to the optimum fertilizer application rate and the levels of available nutrients in the soil. The nutrient critical values of tea plant could be calculated as: N (412.5±25.0) kg/hm 2, P2O5 (88.5±27.1) kg/hm2 and K2O (180.2±27.7) kg/hm2.

Key words: tea plantation, tea yield, NPK, soil nutrient correlation coefficient, nutrient critical value for optimum yield

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