Chất lượng phân ủ từ rác thải hữu cơ

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Tác giả: Thanh Thư Trần

Ngôn ngữ: Vie

Ký hiệu phân loại: 631 Specific techniques; apparatus, equipment, materials

Thông tin xuất bản: Tạp chí Khoa học - Công nghệ Thủy sản, 2020

Mô tả vật lý: 113-120

Bộ sưu tập: Metadata

ID: 397421

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Phân ủ dùng nguyên liệu chính từ rác thải hữu cơ như rau củ thừa, lá cây khô thu gom trong khuôn viên trường Đại học Nha Trang. Hỗn hợp nguyên liệu ủ có tỷ lệ phối trộn: 1 rau củ thừa:0.52 lá cây và 11kg môi trường nền (gồm 10kg phân hữu cơ Sông Gianh và 1kg chế phẩm Nấm Trichoderma). Trải qua 2 tháng ủ trong thùng ủ trống quay 200L, sản phẩm tạo thành không có mùi hôi được dùng làm phân hữu cơ bón cho cây cảnh trong khuôn viên trường Đại học Nha Trang. Thông số nhiệt độ và độ ẩm của hỗn hợp ủ được đo hàng ngày bằng nhiệt kế, các thông số như pH, hàm lượng Cacbon hữu cơ được phân tích định kỳ trong phòng thí nghiệm. Giá trị pH của hỗn hợp ủ nằm trong khoảng từ 7,90 - 8,35 thích hợp để các vi sinh vật sinh trưởng và phát triển. Độ ẩm sau 2 tháng ủ vẫn duy trì ở 35%. Chất lượng phân ủ được so sánh với quy định về phân bón hữu cơ ở Thông tư 09/2019/TT-BNNPTNT. Phân ủ được thử nghiệm trên hạt giống rau mồng tơi (Basella alba L.) và cây hoa chiều tím (Ruellia brittoniana) với kết quả tốt nhất trên các chỉ tiêu chính về sinh lý thực vật ở tỉ lệ phối trộn 1 phân ủ:1 đất., Tóm tắt tiếng anh, Composting was used 2 main sources of organic waste: dry leaves and vegetable waste which were collected in Nha Trang university campus. The ratio of vegetable waste to dry leaves in the compost was 1:0.52. Furthermore, the compost included 10kg Song Gianh organic fertilizer and 1kg Trichoderma fungi. It spent 2 months for the mixture of materials to decay in 200L rotary drum composter. This process made the the product, which has no smell, was used as organic fertilizer for greenery in Nha Trang campus. Temperature and moisture of the compost was followed every day by the sensor. pH and total organic Carbon were analyzed in the laboratory. pH of the compost was around 7.90-8.35 which was suitable for growth of organisms. Moisture still remained at 35%. The quality of composting was analyzed based on the Vietnam Circular 09/2019/ TT-BNNPTNT. In addition, tests of the quality composting was done on Basella alba L. seeds and Ruellia brittoniana branches. The tests gave good results of plant physiology in which the ratio of composting to soil was 1:1.

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