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钾肥施入土壤以后,往往会遭受随水淋失或被土固定的危险,从而影响到钾肥的有效性和利用率。许多学者对此进行了研究。但就文献来看,多数只是集中在粘土矿物与钾的关系方面,而对土壤腐殖质与钾的关系却研究得很少。Bartlett用H_2O_2 处理土壤后,发现阳离子交换量大大减低,表明土壤腐殖质对阳离子交换量有很大的贡献。普良尼斯尼科夫指出,有机质含量高的土壤能更多地固定钾。但也有人认为土壤腐殖质对钾的固定没有什么影响。总之,土壤腐殖质对钾的结合关系,看法不一。为了探索提高钾肥有效性和利用率的途径,我们初步研究了土壤腐殖质与K~+之间结合能的关系,所得结果,笔者认为有一定启发。
When applied to the soil, potash tends to suffer from the risk of water leaching or soil being fixed, thus affecting the availability and availability of potash fertilizer. Many scholars have studied this. However, as far as the literature is concerned, the majority only focus on the relationship between clay minerals and potassium, but very little on the relationship between soil humus and potassium. After Bartlett treated the soil with H 2 O 2, it was found that the amount of cation exchange was greatly reduced, indicating that soil humus contributed greatly to the amount of cation exchange. Prynny Nekiv pointed out that high soil organic matter can fix potassium more. However, some people think that soil humus has no effect on the fixation of potassium. In short, the combination of soil humus potassium, different views. In order to explore ways to improve the availability and efficiency of potash fertilizer, we initially studied the relationship between soil humus and K ~ + binding energy, the results obtained, I think there is some inspiration.