天然沸石的交换性阳离子类型与农业适用性

天然沸石有良好的离子交换和吸附特性,因此,它在农业上的应用也越来越受到人们的重视,但据我们发现,不同产地沸石,占主导地位的交换性阳离子种类大不相同,如果盲目应用,就会产生相反的结果。通过实验证实,天然沸石的阳离子类型,特别是含交换性Na~ 较高的一类沸石与土壤、肥料相互作用后,对植物生长有很大影响。

Cationic form of natural zeolite and their agricultural suitability.

Natural zeolites with favourable properties of ion exchange and adsorption have received increasing attention in agriculture application. But negative effects may be obtained of applying them without considering their special characters. Our experiments indicate that the cationic form of natural zeolites with higher content exchangeable Na~ could greatly influence the growth of crops after their interaction with soil and fertilizer. For this reason, the agricultural suitability of natural zeolites should be re-evaluated.