Thái Phiên, Vũ Cao Thái, Nguyễn Trọng Thi, Đậu Cao Lộc, Đào Trung Việt (trang 55-60)
Từ khoá: Hiệu lực, phân, Phospal, phân bón, lân, lúa
A comparative efficiency of “Phospal” with different phosphorous fertilizers applied to flooded rice on some main soil types
Experiments on acid alluvial soil (DAP > phospal > thermophosphate > superphosphate), slight acid sulphate soil (superphosphate – thermophosphate > DAP > phospal) and degraded grey soil (superphosphate – DAP – thermophosphate > phospal. Optimal P fertilizer application rate is 30-60 kg P2O5/ha for spring rice and 30kg P2O5/ha for summer rice.