天然沸石和石灰混用对酸性黄红壤改良及增产效应的研究

Effect of Combined Application of Zeolite and Lime on Acid Red-yellow Soil Reclamation and Crop Production

安徽南部地区处在高温高湿的条件下 ,土壤母质强烈风化 ,盐基损失严重 ,阳离子交换量仅为 8～ 10cmdkg- 1土 ,土壤酸性或强酸性 ,pH为 4.3～ 5.4。研究结果表明 :施用石灰 ,土壤pH提高两个单位 ,土壤活性铝含量降低 1/ 3— 2 /3 ,沸石和石灰配合施用可以显著提高土壤速效养分含量 ,促进作物生长 ,增加作物产量。

The soil in the south part of Anhui has been strongly weathered due to high temperature and humidity. The bases and silicon were leached out from the parent material, resulting in both the accumulation of Al and Fe and the soil acidification. The losses of the cations were heavy.Therefore, The effect of applying natural zeolite and powdered limestone on the soil reclamation was evaluated. Result shows that powered limestone application increased the soil pH value by two units, with active aluminum content decreasing to one-third to two-third.The application of powered limestone in combination with natural zeolite had an even better effect on increasing available soil nutrients,plant growth and crop yield.