Tạp chí
Nguyễn Xuân Trường, Mai Văn Quyến, Lê Lân (trang 116-121)
Từ khoá: hiệu lực, phân bón, magie, lúa, đất xám vàng, Đông Nam Bộ
Summary
The effect of magnesium fertilizer on rice on acrisols in the south-east of Vietnam
Study showed that rice yield was raised when soil exchangeable Mg ++ was in a certain range. The positive correlation was observed between elative yield and soil exchangeable Mg ++, following the equation of y= aLn(X) + b. Field experiments showed the Mg nutrition of the leaf and plant in 30 days and 45 days after transplanting had a close correlation with the relative yield following this equation. When the Mg nutrition of the leaf and plant in 30 and 45 days after transplanting was < 0,14% and <0.145% (in winter-spring), <0.135% and <0.14% (in summer-autumn crops), rice have been Mg deficiency.
