【摘要】 通过对河北平原京津以南地区土壤样品的采集与分析,初步研究了其酸度特征和酸化敏感性,结果显示:大气酸沉降、氮磷化肥的过度施用、作物盐基离子的吸收以及农药的滥用是造成土壤pH值下降的主要原因;碳酸钙含量是河北平原土壤酸碱缓冲性能的主要影响因素。更多还原

【Abstract】 Through the sample collection and analysis of the soil of Hebei plain south of Beijing and Tianjin,the authors of this paper have conducted a preliminary study of its acidity characteristics and sensitivity to acidification,which shows that the main causes of the decline in soil pH value are atmospheric acid deposition,excessive application of nitrogen and phosphorus fertilizer,crop base ion absorption and misuse of pesticides and that calcium carbonate is the main influencing factor of soil pH buffering properties in Hebei Plain.更多还原