Đánh giá năng suất và chất lượng của năm giống cải kale (Brassica oleracea L. var. acephala) thuỷ canh trong điều kiện nhà màng
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Abstract
The study was conducted to evaluate the yield and quality of five kale varieties: (1) seaweed green, (2) seaweed purple, (3) green curly, (4) purple curly, and (5) green curly Viet, using the hydroponic method. The experiment was arranged in a completely randomized design with 10 replications. Results showed that seaweed green achieved the highest performance, with statistically significant differences compared to other cultivars in terms of yield (3.60 kg/m²), number of harvested leaves per plant (81.8 leaves/plant), and leaf weight (600 g/plant), while the average leaf weight was comparable to seaweed purple and green curly Viet (ranging from 6.77 to 7.36 g/leaf). Regarding quality, seaweed green exhibited lower levels of dry matter (11.3%), crude protein (2.96%), calcium (2,411 mg/kg), magnesium (834 mg/kg), and potassium (4,880 mg/kg) than some other cultivars, but had a relatively high β-carotene content. Overall, seaweed green is suitable for hydroponic production under greenhouse conditions.
Tóm tắt
Nghiên cứu được thực hiện nhằm xác định năng suất và chất lượng của năm giống cải kale: (1) rong biển xanh, (2) rong biển tím, (3) xoăn xanh, (4) xoăn tím và (5) xoăn xanh Việt bằng phương pháp thủy canh. Thí nghiệm được bố trí hoàn toàn ngẫu nhiên với 10 lần lặp lại. Kết quả cho thấy giống cải kale rong biển xanh đạt cao nhất, khác biệt có ý nghĩa qua phân tích thống kê so với các giống khác về năng suất (3,60 kg/m²), số lá thu được trên cây (81,8 lá/cây), khối lượng lá (600 g/cây), nhưng khối lượng trung bình lá cao tương đương với rong biển tím và xoăn xanh Việt (dao động từ 6,77 đến 7,36 g/lá). Về chất lượng, rong biển xanh có hàm lượng vật chất khô (11,3%), protein thô (2,96%), canxi (2.411 mg/kg), magie (834 mg/kg) và kali (4.880 mg/kg) thấp hơn một số giống khác nhưng hàm lượng β-carotene đạt mức khá. Cải kale rong biển xanh phù hợp để thủy canh trong điều kiện nhà màng.
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