| | | | 过磷酸钙 | | | | 12％～18％ | | | | 40％～50％ | | | | | | 667 m2 | 50kg | | | | | 667 m2 | 20～25kg | | 667 m2 20～30kg | | | 667 m2 | 10kg | 1％～3％ | | 1. | | 2. | 3. | | 4. | | | | |