| 【Objective】The effects of different forms of ammonium polyphosphate as seed fertilizer on the growth
and nutrient accumulation of soybean and wheat seedlings in calcareous soil were studied.【Method】 Pot experiments were
conducted to investigate the effects of different phosphorus sources on nutrient accumulation of soybean and wheat by using
monoammonium phosphate (MAP) and different forms of ammonium polyphosphate (APPL for liquid and APPS for solid) as
seed fertilizers with no fertilization as control. 【Result】 APPL treatment significantly promoted the growth of soybean, and
the shoot dry weight was increased by 48.2% compared with that of APPS treatment, while APPS treatment was the best for
the growth effect of wheat and its shoot dry weight increased by 34.9% compared with APPL treatment. The accumulation of
phosphorus in soybean shoots treated with APPL was the highest, significantly higher than that of APPS treatment by 38.8%.
Under different forms of phosphorus fertilizer, the biomass of wheat and the uptake of phosphorus, calcium and magnesium
in APPS treatment were the highest, followed by APPL treatment, and the effect of MAP treatment was the worst. The accumulation of phosphorus in soybean shoots treated with APPS was 18.7% higher than that of APPL treatment, which was 2.5
times higher than that of MAP treatment. 【Conclusion】 Under the experimental conditions, taking MAP treatment as control
group, the fertilizer efficiency of APPL treatment was the best for soybean, and the shoot dry weight was two times higher than
that of control group. The fertilizer efficiency of APPS treatment was the best for wheat, and the shoot dry weight was increased
by 79.3% compared with that of MAP treatment . |
