Abstract
Symbiotic nitrogen-fixing capacities of Crotalaria juncea, L. (I), Sesbania sesban, Merr. (II), and Mncuna capitata, Sw. (III) on the saline soils of Formosa were investigated. The results are summarized as follows: (1) The growth of these host plants, the nodule formation, and the percentage of total nitrogen in the hearvested plants are clearly affeckd by salts above 0.3% (as total salts). II. is more resistant to the injury by salts than I and III. (2) Before desalinizaton, infection of nodule bacteria and dressing of nutrients show no distinct effects on the nitrogenfixing capacities of leguminous plants, but after reclamation, they show obvious efficacies on those capacities. (3) It seems that nodule bacteria are more resistant to the injury by salts than the nodule formation.
