摘要
采用大田调查采样与室内分析相结合的方法,对辽宁耕地棕壤的酸度特征进行研究。结果表明:辽宁地区不同区域耕地棕壤的pH值之间存在一定的差异性:瓦房店市土壤pH值整体高于其他采样地区,且变化范围较大;清原县和宽甸县的土壤酸度较其他地区低,且变化范围均较小,pH值集中分布;沈阳市土壤pH值变异系数最大,说明沈阳市影响土壤酸度变化的因素较为复杂。对耕地棕壤pH值的影响因素进行分析显示,降雨量对土壤pH值具有一定的影响。降雨量大的地区,土壤淋溶强烈,土壤pH值降低成为土壤酸化的原因之一。
This paper uses the method of combining the field investigation and indoor analysis to study the features of acidity and the relation of soil acidity in Liaoning Province.The results show that there are differences in soil pH values in different areas in Liaoning.The results indicate that the overall soil pH in Wafangdian city is higher than that of other areas,and its variation range is relatively larger;the soil acidity of Qingyuan and Kuandian counties is lower than that in other areas,and it is smaller in range of variation,and in pH value concentration distribution;Shenyang soil pH coefficient of variation is the largest,which shows that the soil acidity change of Shenyang influence factor is more complicated.The impact of pH on cultivated brown soil,rainfall are influence factors of cultivated brown soil,soil leaching is strong,and the reduced soil pH is one of the major reasons for soil acidification.
出处
《农业科技与装备》
2011年第6期21-23,共3页
Agricultural Science & Technology and Equipment
关键词
棕壤
耕地
酸度
特征
PH值
影响
brown soil
cultivated land
acidity
characteristics
pH value
influence
