(4)施肥管理技术冲绳县的草地开发是以迄今不能作为农业耕地而利用的地方为主要对象,这些地方的土壤肥度低,因此,尤要强调豆科牧草的施肥管理技术的重要性。对以禾草为主的草地,施入氮肥最为重要,但对以豆科牧草为主的草地,施入氮肥以外的其他肥料是重要的,施肥的立足点应放在发挥豆科牧草固氮能力这一方面。 (4) Fertilization Management Techniques Grassland development in Okinawa prefers to places not used as agricultural cultivated land to date, and soil fertility is low in these areas. Therefore, it is important to emphasize the importance of fertilization management techniques for leguminous pastures. Grassland dominated by grasses is most important for applying nitrogen fertilizer. However, it is important for other legume grasslands to apply other fertilizers than nitrogen fertilizers. Fertilizers should be placed on the nitrogen fixation capacity of legumes This aspect