摘要
本文对甘肃省主要农业土壤中Ｃｎ、Ｚｎ、Ｍｎ、Ｆｅ的形态及其有效性进行了研究。结果表明，供试土壤的全Ｃｕ含量范围为２２－２４ｍｇ／ｋｇ，全Ｚｎ为７３－７４ｍｇ／ｋｇ，全Ｍｎ为５４２－７７２ｍｇ／ｋｇ，全Ｆｅ为３５６８５－３８３５５ｍｇ／ｋｇ。四种元素均以灌漠土的含量最低，褐土最高。土壤中Ｃｕ、Ｚｎ、Ｍｎ、Ｆｅ的大部分以残留矿物态和氧化铁结合态存在。生物试验和统计分析表明，Ｃｎ、Ｚｎ、Ｍｎ、Ｆｅ的交换态和松结有机态对植物最为有效，以松结有机态的作用最大。
In this work, the forms and availability of Cn, Zn, Mn and Fe of
principal agri-cultural soils in Gansu Province were studied. The results showed that the
contentsof Cu, Zn, Mn and Fe in the experimental soils were 22-24mg/kg,
73-74mg/kg,542-772mg/kg and 25685-38355mg/kg respectively. Of tlie four soil types testedthe
contents of Cu, Zn, Mn and Fe were the lowest in irrigated desert soil but theLighest in
cinnamon soil. Most of Cu, Zn, Mn and Fe in the soil occur in residualmineral form and bound
to iron oxide (amorphous and crystalline). Both biologicalexperiment and statistical analysis
pointed that the exchangeable form and the formloosly bound to organic matter were the most
available forms of Cu, Zn, Mn and Fefor plants.
出处
《土壤学报》
CAS
CSCD
北大核心
1995年第4期423-429,共7页
Acta Pedologica Sinica
基金
甘肃省自然科学基金
