在毛里求斯蔗区的酸性土壤上施石灰并不改善甘蔗产量,较高的施用量反而使产量降低,原因尚不明。施石灰不显出正反应是由于土壤中不存在着M_n和Al的毒害,并保持着C_a的充裕状态。pH5.0以上,交换性Al少到可以忽略的程度,交换性C_a则占据了70%以上的阳离子交换位置,施石灰并不明显增加(C的位置)。结论是:只应在土壤pH低于5.0时施石灰,所施石灰的量足使pH提高到 Lime on acid soils in the sugarcane area of ​​Mauritius does not improve sugar cane production, but the higher application rates, on the contrary, lower yields, for reasons unknown. Lime does not show the positive reaction is due to the soil does not exist M_n and Al poisoning, and maintain a sufficient state of C_a. pH5.0 or more, the exchangeability of Al is negligible, exchangeable C_a occupies more than 70% of the cation exchange sites, lime does not significantly increase (C position). The conclusion is that lime should only be applied when the pH of the soil is below 5.0 and the amount of lime applied is sufficient to raise the pH to