by means of constant moisture and consecutive wetting-drying incubation, characteristics of k fixation and the effect of applying humic-acid on k-fixation in the cultivated brown soil were studied.
通过室内恒湿和干湿交替培养试验,研究了钾素受到生物耗竭的耕地棕壤对外源钾的固定特征和施用胡敏酸后对土壤固钾作用的影响。