Đánh giá quản lý dinh dưỡng và phương pháp trồng trọt ảnh hưởng đến năng suất cây trồng của lúa khô và ước tính lượng nước tiết kiệm trong canh tác lúa khô bằng mô hình FAO-CROPWAT

Paddy and Water Environment - Tập 21 Số 4 - Trang 467-477 - 2023
Sruthi, P.1, Surendran, U.1
1Land and Water Management Research Group, KSCSTE- Centre for Water Resources Development and Management (CWRDM), Kozhikode, India

Tóm tắt

Lúa là một trong những loại cây lương thực quan trọng nhất và là mục tiêu hàng đầu trong việc bảo tồn nước vì đây là loại cây được trồng rộng rãi nhất dưới hệ thống tưới lũ. Tài nguyên nước đang nhanh chóng cạn kiệt đe dọa sự bền vững của sản xuất lúa tưới, sinh kế của người sản xuất và tiêu thụ lúa, và cuối cùng là an ninh lương thực. Với điều này, một thí nghiệm thực địa đã được thực hiện với lúa khô bằng cách đánh giá các phương pháp trồng khác nhau và thực hành quản lý dinh dưỡng. Chi tiết điều trị như sau: (A) phương pháp trồng, chẳng hạn như trồng dặm và gieo hạt theo hàng, và (B) các chế độ quản lý dinh dưỡng khác nhau (cụ thể, T1–125% lượng phân bón vô cơ; T2–100% lượng phân bón vô cơ; và T3–100% lượng phân hữu cơ). Kết quả cho thấy, trong số các phương pháp trồng, gieo hạt theo hàng trực tiếp cho hiệu suất tốt hơn về mặt tăng trưởng và các thông số năng suất. Về quản lý dinh dưỡng, 125% lượng phân bón vô cơ N được khuyến nghị sản xuất ra năng suất cao hơn so với các điều trị khác, và sự khác biệt này có ý nghĩa thống kê. Phân hữu cơ được áp dụng như một điều trị tạo ra các thông số tăng trưởng cây trồng và năng suất thấp nhất. Hơn nữa, nhu cầu nước cho lúa khô và lúa ngâm được so sánh bằng cách sử dụng FAO-CROPWAT, và kết quả cho thấy lượng nước tiết kiệm được là 36,4%.

Từ khóa

#lúa #quản lý dinh dưỡng #phương pháp trồng #năng suất cây trồng #tiết kiệm nước #mô hình FAO-CROPWAT

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