ẢNH HƯỞNG CỦA MÔI TRƯỜNG DINH DƯỠNG VÀ MUỐI ĐẾN SINH TRƯỞNG CỦA CÂY GIỌT BĂNG (Mesembryanthemum crystallinum) TRỒNG BẰNG KỸ THUẬT THỦY CANH HỒI LƯU

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Tác giả: Công Anh Phạm, Quang Dần Trần

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Khoa học và Công nghệ - Đại học Thái Nguyên, 2022

Mô tả vật lý: tr.91-98

Bộ sưu tập: Metadata

ID: 332413

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Cây Giọt băng (Mesembryanthemum crystallinum) là cây ưa mặn tuỳ nghi, có khả năng chịu mặn cao, thậm chí sử dụng muối NaCl để thúc đẩy sinh trưởng. Đây là một loài cây trồng có giá trị với các mục đích sử dụng khác nhau trong thực phẩm và dược phẩm. Nghiên cứu này đã đánh giá ảnh hưởng của các môi trường dinh dưỡng cơ bản và muối đến sinh trưởng của cây trồng bằng kỹ thuật thuỷ canh hồi lưu dạng màng dinh dưỡng, nhằm hướng đến việc thiết lập một hệ thống sản xuất có hiệu quả. Kết quả nghiên cứu cho thấy sinh khối của cây cao hơn khi trồng cây với môi trường dinh dưỡng 1/2 Hoagland so với 1/2 Murashige và Skoog-1962 hoặc dung dịch thuỷ canh thương mại của G9 Hydroponic. Bổ sung muối với nồng độ tăng dần, 50 mM NaCl ở tuần đầu tiên và 100 mM ở tuần thứ hai sau khi trồng, đã tăng cường sinh trưởng của cây tốt hơn các phương thức bổ sung khác. Dung dịch dinh dưỡng chứa 20-40% (v/v) nước biển đã làm giảm khối lượng tươi chồi, nhưng số lá và chiều cao chồi bị giảm không đáng kể. Kết quả cho thấy khả năng sử dụng dinh dưỡng 1/2 Hoagland bổ sung muối để trồng thuỷ canh cây Giọt băng.Ice-plant (Mesembryanthemum crystallinum) is a halophytic plant having high salinty tolerance, even using NaCl salt at 100 mM concentration to promote the plant growth. The plant is used as a valuable crop with different use purposes in food and medicine. The present study investigated effects of basic nutrients and salt on growth of the ice-plant cultivated by nutrient film technique, which would be useful to establish an effective platform for the ice-plant hydroponic production. Results showed that biomass of the ice-plant was higher in the nutrient of 1/2 Hoagland than that of 1/2 Murashig and Skoog-1962, or that of a commercial hydroponic solution of G9 Hydroponic. Salt addition with a gradual increase in conccentration, 50 mM NaCl at one week and 100 mM NaCl at two weeks after the onset of cultivation, enhanced better the growth than other additions. The nutrient containing 20-40% (v/v) seawater tended to reduce the fresh weigh of shoots, but the height and leave number was not decereased significantly. The results suggested that the 1/2 Hoagland nutrient supplied with salt could be used to hydroponically grown the ice-plant.

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