信阳茶区土壤有效态微量元素含量状况  

Available trace elements content in soil of Xinyang tea-producing area

作　　者：邹庆鹏[1] 金开美 曹成[1] 吕立哲 赵丰华 张军锋[1] 刘冬梅[1] 

机构地区：[1]河南省农业科学院农业质量标准与检测技术研究所,郑州450002 [2]信阳市农业科院,信阳464000

出　　处：《食品安全质量检测学报》2017年第3期975-980,共6页Journal of Food Safety and Quality

基　　金：河南省科技攻关计划项目(132102110071);河南省农科院2012年财政预算项目;国家农产品质量安全风险评估项目(GJFP2017005)~~

摘　　要：目的对信阳毛尖茶5个主产区茶园土壤pH、有机质和有效态Zn、Cu、Mn、B和Fe的含量进行调查和分析,为茶园合理施肥提供借鉴。方法分别采用pH计、元素分析仪和等离子体光电直读光谱仪对土壤的pH、有机质和微量元素的含量进行测定。结果信阳毛尖茶5个主产区茶园土壤pH值总体偏酸性,有机质平均含量低于15 g/kg,且地域差异较大。土壤有效态Zn的平均含量处于中等水平,空间分布很不均匀。其中,罗山县和浉河区茶园土壤有效态Zn的含量在中等及中等以上的分别占100%和99.08%,而光山县和新县茶园仅为15.39%和1.92%。土壤有效态土壤Mn和B的含量极其缺乏,均低于土壤缺素临界值,而有效态Fe含量极其丰富。茶园土壤pH值与有效态的Zn和Fe含量呈极显著负相关性,与有效态的Cu、Mn和B的含量呈极显著正相关性;土壤有机质含量和有效态Zn、Cu和Fe的含量呈正相关,与有效态Mn和B呈负相关性。结论信阳毛尖茶茶园需要增施有机肥,同时还要增施Zn、Cu、Mn和B微肥。Objective To survey and analyze the soil pH values, organic matter contents and contents of available Zn, Cu, Mn, B, and Fe in 5 main producing areas tea gardens of Xinyang Maojian, so as to provide support for scientific and reasonable fertilization. Methods The soil pH value, content of soil organic matter and soil trace elements were detected using pH meter, elemental analyzer and inductively coupled plasma spectrometer, respectively. Results The soil pH value was totally partial acid, and the average content of soil organic matter was lower than 15 g/kg with great regional differences. The average content of available Zn was in medium with heterogeneous spatial distribution. Among them, the contents of soil available Zn in the middle and above accounted for 100% and 99.08% in the tea gardens of Luoshan and Shihe, respectively, while there were only 15.39% and 1.92% in Guangshan and Xinxian. The contents of soil available Mn and B were really lacking, and below their critical value, while the content of soil available Fe was abundant. The soil pH value had negative correlations with available Zn and available Fe, but has positive correlations with available Cu, Mn and B, respectively. The soil organic matter was positively correlated with available Zn, Cu and Fe, but negatively correlated with available Mn and B. Conclusion Therefore, organic fertilizer as well as increasing Zn, Cu, Mn and B micronutrient fertilizer should be applied to increase soil fertility in tea gardens of Xinyang Maojian.

关 键 词：茶园土壤 PH值 有机质 有效态Zn 有效态Cu 有效态Mn 有效态B 有效态Fe 

分 类 号：S571.1[农业科学—茶叶生产加工]