A review on the trace analytical techniques for orthophosphate in ocean environments is presented in this paper .
本文综述了近年来海洋环境中痕量活性磷的分析技术。
This paper introduced relationships between three key main cultivational factors sowing norm , amount of complex diammonium orthophosphate used and amount of urea used and stem yield , grain yield and economic profit of flax udner yili local cultivational condition .
