Table 3 Analysis of variance for the effects of fertilization application, precipitation, temperature and the interactions between fertilization and the other variables on grain yield, straw yield, grain P content, straw P content and aboveground P uptake.

	Grain yield	Straw yield	Grain P content	Straw P content	P uptake
Early rice season
Fertilization (F)	***	***	***	***	***
Precipitation (P)	ns	**	*	*	ns
Temperature (T)	ns	ns	***	ns	***
F × P	ns	ns	ns	ns	ns
F × T	***	**	ns	*	**
P × T	ns	ns	**	ns	ns
F × P × T	ns	ns	ns	ns	ns
Late rice season
Fertilization (F)	***	***	***	***	***
Precipitation (P)	*	***	ns	ns	**
Temperature (T)	**	***	***	***	*
F × P	ns	ns	ns	ns	ns
F × T	*	ns	*	ns	**
P × T	**	**	ns	ns	*
F × P × T	ns	ns	ns	*	ns

Precipitation is arbitrarily divided into three levels of < 600, 600–800 and > 800 mm for early rice season; and into three levels of < 150, 150–300 and > 300 mm for late rice season.
Temperature (monthly) is arbitrarily divided into three levels of < 23, 23–24 and > 24 ℃ for both the early and late rice season.
CK: unfertilized control; NK: mineral fertilizer NK; NPK: mineral fertilizer NPK; NKM: mineral fertilizer NK combined with pig manure, PRE: phosphorus recovery efficiency.
ns Not significant at p < 0.05.
* Denote significant difference in ANOVA at p < 0.05.
** Denote significant difference in ANOVA at p < 0.01.
*** Denote significant difference in ANOVA at p < 0.001.

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