7McBeath T M , Lombi E , McLaughlin M J , et al. Polyphosphate- fertilizer solution stability with time, temperature, and pH [J]. J Plant Nutr Soil Sc, 2007,170(3) : 387-391.
8Williard J W, Fan" T D, Hatfield J D. Hydrolysis of ammonium pyro-, tripoly-, and tetrapolyphosphate at 25~C and 50~C [J]. J Chem Eng Data, 1975,20(3 ) : 276-283.
9Busman L M, Tabatabai M A. Hydrolysis of trimetaphosphate in soils[J]. Soil Sci. Soc. Am. J, 1985,49(3) :630-636.
10Dick R P, Tabatabai M A. Hydrolysis of polyphosphates in soils [J]. Soil Sci, 1986,142(3):132-140.
