So sánh tính khả thi của hai kiểu thiết kế máng cạn và khay trồng rau trong hệ thống trồng cây thủy canh và nuôi cá tích hợp

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Nguyễn Anh Duy Lê, Trần Tiểu Trúc Lê, Thụy Diễm Trang Ngô, Thị Bé Ly Nguyễn, Thị Hồng Ngọc Nguyễn, Thị Thúy Vi Triệu

Ngôn ngữ: vie

Ký hiệu phân loại: 627.5 Reclamation, irrigation, related topics

Thông tin xuất bản: Khoa học nông nghiệp Việt Nam, 2018

Mô tả vật lý: 141-151

Bộ sưu tập: Metadata

ID: 492295

Thêm vào giỏ

Nghiên cứu được thực hiện nhằm mục đích đánh giá kiểu thiết kế hệ thống aquaponics phù hợp với quy mô hộ gia đình ở các vùng ven đô hiện nay. Thí nghiệm bao gồm 2 kiểu thiết kế hệ thống trồng rau thủy canh và 3 lần lặp lại
có và không có sử dụng chất nền là điểm khác biệt chính ở hai kiểu thiết kế này. Xà lách (Lactuca sativa L.), húng lũi (Mentha spicata L.) và húng quế (Ocimum basilicum L.) là ba loại rau được trồng trên các hệ thống dựa trên phương pháp thủy canh nhưng nước được thay thế bằng nước nuôi cá rô phi với mật độ 120 con/m3. Trong suốt thời gian 70 ngày nuôi hệ thống không thay nước mới và cho cá ăn mỗi ngày nhưng chất lượng nước đến khi kết thúc thí nghiệm đều khá tốt, đặc biệt không có sự tích lũy nồng độ đạm NH4-N và NO2-N. Hai kiểu hệ thống trong nghiên cứu đều phù hợp với hộ gia đình có diện tích sân thượng vừa và có khoảng sân trước hiên nhỏ. Xét một cách tổng quát, thiết kế theo hệ thống 1 mang tính ổn định và có tiềm năng để kế thừa và phát triển hơn hệ thống 2. Mặc dù vậy, để áp dụng vào thực tiễn cần có giải pháp khắc phục được sâu bệnh và tăng hiệu quả nuôi cá.This study was carried out to investigate the suitability of different aquaponic systems to be applied at the suburban household scale. The experiment consisted of two types of hydroponic sub-systems in three replications
presence and absence of substrate were the main difference of two types of systems. Three leafy vegetables, lettuce (Lactuca sativa L.), curled mint (Mentha spicata L.), and basil (Ocimum basilicum L.) were planted on these two aquaponic systems and watered with water from Tilapia culture at the density of 120 fish/m3. During 70 raising days, the water quality was good especially zero-accumulation of nitrogenous forms NH4-N and NO2-N in spite of daily feeding and zero-water exchange. The two aquaponics systems in this study were suitable for the households with a medium size of rooftop and small front yard. Generally, the first system showed sustainability and higher potential for further development as compared to the second system. In order to be applied in the reality, pest management and increasing of fish yield have to be taken into consideration.

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