Võ Thị Gương, Nguyễn Mỹ Hoa, U.Singh, Võ Tòng Xuân (trang 84-89)
Từ khoá: hiệu lực, phân bón, P, N, năng suất, lúa, đất phèn, Hoà An, Cần Thơ
Summary
Phosphorous fertilizer efficiency and its residual effect on rice yield grown on acid sulphate soil at Hoa An, Can Tho province
Based on P balanced estimation and grain yield, initial application of 90kg P2O5/ha was sufficient for three crops and balanced in soil. Phosphorus fertilizer need to e supplied in the fourth crop for sustainable crop yield.