Screening method and application of phosphorus release and capacity-increasing material for acid-poor and infertile slope red soil

Abstract

The application discloses a screening method and application of a phosphorus-accumulating and capacity-increasing material for a weak-acid and poor-slope cultivated red soil, and the screening method comprises the following steps: (1) establishing an annual cumulative increase of effective phosphorus of different phosphorus fertilizer varieties on the poor-slope cultivated red soil, and establishing a database; (2) establishing a crop uniform land potential database; (3) determining the spatial variation of the effective phosphorus of the slope cultivated red soil; and (4) determining the phosphorus-accumulating and capacity-increasing phosphorus fertilizer variety for the weak-acid and poor-slope cultivated red soil. The application solves the problems that the spatial variation of the phosphorus of the slope cultivated red soil is large, the effect of the phosphorus fertilizer on the phosphorus-accumulating and capacity-increasing of the slope cultivated red soil is covered, the expected effect of the phosphorus-accumulating and capacity-increasing of the red soil cannot be achieved in a field plot test for several years or even for ten years or more, and the screening method for the phosphorus-accumulating and capacity-increasing material for the weak-acid and poor-slope cultivated red soil is lacked.

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