贵州修文土壤-猕猴桃系统重金属富集特征

为实现优质猕猴桃生产提供基础资料和科学依据,本文对贵州省典型猕猴桃种植基地的"土壤-茎-叶-果"作为系统的重金属含量进行分析测定,采用地积累指数法和植物重金属富集系数法,探讨猕猴桃植株及果实对重金属的富集能力。结果表明:贵州修文猕猴桃种植基地土壤重金属环境质量基本安全;猕猴桃不同部位对重金属的富集能力具有明显差异,重金属富集系数大小依次为叶茎果;猕猴桃果的重金属含量均低于国家标准限定值。

Characteristics of Accumulation of Heavy Metals Insoil-Kiwi System in Guizhou

In this paper,the heavy metals content in the system of soil-stem-leaves-fruit were determined in typical kiwi fruit planting base in Guizhou,which will provide the basic data and scientific basis for achieving high-quality production of kiwi fruit.The accumulation ability of heavy metals of kiwi plants and the fruits were studied through the accumulation index method and plant heavy metal enrichment coefficient method.The result showed that the content of soil heavy metal is under safety value in the kiwi fruit planting base.The accumulation ability of heavy metals in different position of kiwi is greatly distinct and the rank of heavy metal accumulation coefficient is leaf ＞ stem ＞ fruit.All of the content of heavy metal in different position of kiwi are lower than the allowable value of national standard.