苜蓿施肥决策支持系统 app for iPhone and iPad 4.0 ( 7360 ratings ) Utilities Developer: Feng He Free Current version: 2.0.3, last update: 8 years ago First release : 27 May 2016 App size: 2.33 Mb 苜蓿施肥决策系统，主要用于苜蓿生产的肥料管理措施，测定土壤肥力状况,做为确定施肥量的依据