Tạp chí
Nguyễn Tất Cảnh*, Nguyễn Văn Dung*
* Trường Đại học Nông nghiệp I Hà Nội
Từ khoá: thâm canh, lúa
Summary
The initial study of new system of rice intensification – NSRI
NSRI is a system of farming practices helping rice plants to achieve their potential by following changes: water management from keeping standing water in the rice field until harvesting to no continuously standing water. The rice plant during its growth stage only needs to have soil that is moist, but not saturated; early transplanting of seedlings before they are 15 days old and as early as 8 or 10 days instead of transplanting older seedlings with 4, 5 or 6 weeks old; wilder spacing, 1 or 2 plants per hill replaces 3 or 4 plants per hill; seedlings are placed into the soil when they are transplanted and try do not make them vulnerable when moving them from nursery to the field. Application of mor organic manure and…Results of study in Quang Nam, Thua Thien Hue, Quang Tri, Thanh Hoa and Ha Noi: rice yield of hybrid varieties was 20% and of purebred varieties 40% higher than in NSRI than in conventional farming practices. NSRI not only increases rice yield but also increases income by reducing external inputs such as fertilizer, pesticides, irrigation water and…
