不同利用方式对松嫩平原典型县耕地土壤养分状况的影响  

The effects of different land use types on soil nutrient conditions in cultivated land of a typical County in Songnen Plain

作　　者：王宗明[1] 张柏[1] 宋开山[1] 张素梅[1] 刘殿伟[1] 黄健[2] 张惠琳[2] 

机构地区：[1]中国科学院东北地理与农业生态研究所,长春130012 [2]吉林省土壤肥料总站,长春130015

出　　处：《生态环境》2008年第2期704-707,共4页Ecology and Environmnet

基　　金：国家自然科学基金项目(40401003);中国科学院知识创新工程重要方向项目(KZCX3-SW-356);中国科学院院长奖学金启动资金项目

摘　　要：耕地是受人为活动影响最强、对人类生存最重要的土地资源类型之一,研究不同利用方式对耕地的利用对土壤理化性状的影响可以为土壤资源管理与合理利用提供依据。本文选取国家重点商品粮食基地松嫩平原九台市,在获取大量土壤养分数据的基础上,系统分析了不同耕地利用方式土壤养分状况的影响。结果表明,在11种土壤养分中,有效锌和有效磷的总变异系数最大,pH值和阳离子变异系数最小。不同耕地利用方式对土壤有机质、全氮、有效磷和速效钾具有显著影响,而对土壤缓效钾的影响不显著。因农户对菜地的投入及管理水平明显高于粮田,造成菜地土壤的有机质和大量元素含量高于粮田。除有效钼在不同利用方式中的含量无显著差异外,不同利用方式对土壤有效铜、有效锌、有效铁、有效锰和有效硼具有显著影响。水田和菜地的pH和CEC高于旱田。This paper analyzed systematically impact of land use type on soil nutrient conditions in a national key commodity food base county, Jiutai county, Jilin province. Results showed that, among eleven soil nutrients, available Zn and available phosphorus have the biggest coefficients of variation. However, pH and cation exchange capacity have the lowest values. Land use types of cultivated land affected soil organic matter, total nitrogen, available phosphorus and available potassium significantly. However, the effect of land use type on soil non-exchangeable potassium was not obvious. Because of the larger amount of fertilization and higher agricultural management level, the contents of soil organic matter and macronutrients in vegetable land were higher than those in farmlands. Except available Mo, available Cu, Zn, Fe, Mn and B were significantly affected by land use types, pH and CEC have higher values in paddy field and vegetable land than those in dry farming land.

关 键 词：耕地 土地利用方式 土壤养分 松嫩平原九台市 

分 类 号：S158.3[农业科学—土壤学]