Ảnh hưởng phân hữu cơ lên năng suất và hiệu quả tài chính cây lúa trong mô hình tôm-lúa

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Tác giả: Thị Phương Thúy Phạm

Ngôn ngữ: Vie

Ký hiệu phân loại:

Thông tin xuất bản: Nông nghiệp & Phát triển nông thôn 2021

Mô tả vật lý: 157 - 165

Bộ sưu tập: Metadata

ID: 404606

Thêm vào giỏ Liên kết toàn văn

Nghiên cứu nhằm đánh giá ảnh hưởng phân bón hữu cơ lên năng suất và hiệu quả tài chính cây lúa trong hệ thống tôm lúa. Thí nghiệm bố trí khối hoàn toàn ngẫu nhiên bao gồm 9 nghiệm thức với 3 lần lặp lại, thí nghiệm 2 vụ hên tìếp năm 2017 và 2018 trên đất tôm - lúa của 3 nông hộ tại xã Mỹ An, huyện Thạnh Phú, tỉnh Bến Tre. Kết quả nghiên cứu cho thấy, độ phì tự nhiêu trong đất tôm - lúa khá cao. Có 4 nghiệm thức gồm: nghiệm thức bón 0,7 và 0,9 tấn/ha phân hữu cơ Mekong - CTU và 1,0 -1,2 tấn/ha phân hữu cơ sinh học Nhà Nông cho năng suất thực tế dao động từ 3,1 - 5,7 tấn/ha, trung bình là 4,8 tấn/ha không khác biệt có ý nghĩa thống kê vói nghiệm thức bón 0,4 tấn/ha phân hữu cơ khoáng nhãn hiệu Lio Thai và nghiệm thức phân bón vô cơ đối chứng của nông dân (60 N-30 P2O5-30 K2O). Lọi nhuận của 4 nghiệm thức trên đạt cao nhất dao động từ 27,8 - 34,2 triệu đồng/ha, cao hơn nghiệm thức bón phân vô cơ từ 4,0 - 5,9 triệu/ha. Hiệu quả đồng vốn của 4 nghiệm thức trên dao động từ 1,29 - 1,67 lần
hiệu quả đồng vốn của lúa vô cơ dao động từ 1,39 -1,46 lần. Kết quả nghiên cứu nhận thấy trồng lúa hữu cơ trong mô hình tôm - lúa tại huyện Thạnh Phú, tỉnh Bến Tre hoàn toàn khả thi khi áp dụng nhân rộng trong thòi gian tới., Tóm tắt tiếng anh, The study aims to evaluate the effect of organic fertilizer on the yield and financial efficiency of rice in the shrimp - rice system. The experiment was layed out in a completely randomized block, including: 9 treatments 3 replicates, two crops in 2017 and 2018 on the shrimp - rice farms of 3 farmers in My An commune, Thanh Phu district, Ben Tre province. Research results showed that, soil fertility is very high. In four treatments including: fertilizing 0.7 and 0.9 tons/ha of organic fertilizer (Mekong - CTU organic fertilizer) and 1.0 -1.2 tons/ha of biofertilizer (Nha Nong biofertilizer) gave the actual yield ranging from 3.1 to 5.7 tons/ha, an average of 4.8 tons/ha was not statistically different with 0.4 tons/ha of mineral organic fertilizer (Lio Thai mineral organic fertilizer) and farmer's inorganic conffol treatment (60 N-30 P2O5-30 K2O). Profit of four treatments above were the highest ranged from 27.8 to 34.2 million VND/ha, higher than control treatments from 4.0 to 5.9 million VND/ha. The capital efficiency of four treatments above were ranged from 1.29 - 1.67 times and the capital efficiency of control treatment ranged from 1.39 to 1.46 times. The study results found that organic rice cultivation in the shrimp - rice model in Thanh Phu district, Ben Tre province is entirely feasible when being applied for replication in the future.

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