THIẾT KẾ VÀ ĐÁNH GIÁ ẢNH HƯỞNG CỦA DUNG DỊCH DINH DƯỠNG ĐẾN SINH TRƯỞNG, PHÁT TRIỂN VÀ CHẤT LƯỢNG CỦA CÂY XÀ LÁCH (Lactuca sativa) TRÊN HỆ THỐNG THỦY CANH HỒI LƯU
Abstract
Greening cities have been considered as one of the major eco-friendly approaches to provide various positive effects on urbanizations. In this study, the ebb-and-flow hydroponic system has been successfully designed and constructed for the lettuce (Lactuca sativa) cultivation at the laboratory scale. As the result, we found that the application of numerous nutritional solutions could exhibit different growth, development, productivity, and quality of lettuce. Among them, Hoagland M was highly recommended as the best formula for lettuce cultivation as the leaves per plant and fresh weights of 30-day-old lettuce were 17.00 and 130.67 g/plant, respectively, while the total chromophil content and the rate of photosynthesis were 36.70 and 13.57 mg CO2/dm2/hour, respectively. Noticeably, quality analyses also demonstrated that whole lettuce samples were safe due to the low accumulation of nitrate in leaves. Taken together, our study could provide a critical understanding for further establishment of the ebb-and-flow hydroponic system for lettuce and other important vegetables.
