Đánh giá khả năng chịu mặn của hai giống mè (Sesamum indicum L.) vỏ đen khi tưới nước sông nhiễm mặn

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Tác giả: Thị Thu Trang Đặng, Trương Ngọc Khuê Lữ, Thụy Diễm Trang Ngô, Châu Thanh Tùng Nguyễn, Quốc Anh Nguyễn, Thị Hải Yến Nguyễn, Thị Ngọc Diệu Nguyễn, Thị Khánh Ly Trần, Huỳnh Hoàng Mỹ Trương, Thị Phương Thảo Võ

Ngôn ngữ: vie

Ký hiệu phân loại: 577.69 +Saltwater wetland and seashore ecology

Thông tin xuất bản: Nông nghiệp & Phát triển nông thôn, 2022

Mô tả vật lý: 53 - 60

Bộ sưu tập: Metadata

ID: 499349

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The selection of short - term, salt - tolerant and high - value crop varieties for crop rotation on rice soil contributing to promoting agricultural production in the direction of diversity and sustainability is effective solution to adapt to saline intrusion. The experiment was arranged in a net house, in a completely randomized design with two factors and 3 replicates to evaluate the effects of saline water irrigation on growth ability of two sesame varieties ADB1 and double - husk Binh Thuan. The experiment used briny mixed diluted with river water to have salinity concentrations determined by a refractometer of 2%o and 4%o of which river water was the control treatment of 0%o. After 42 days of saline water irrigation (starting from 30 days after sowing) the number of leaves, number of branches, number of flowers, number of fruits and weight of 1,000 seeds of two studied sesame varietis were significantly reduced at salinity levels of 2%o and 4%o (i.e. EC=3.47 mS/cm - 6.09 mS/cm in irrigation water). Number of fruits and weight of 1,000 seeds of the seasame treated salinity at levels of 2%o and 4%o were reduced 29% - 54% and 7% - 25% compared to those plants watering river water.Việc lựa chọn các giống cây màu ngắn ngày chịu mặn, có giá trị cao vào luàn canh trên nền đất lúa góp phần thúc đẩy sản xuất nông nghiệp phát triển theo hướng đa dạng, bền vững là giải pháp hiệu quả thích nghi với điều kiện xâm nhập mặn. Thí nghiệm được bố trí trong nhà lưới theo thể thức hoàn toàn ngẫu nhiên với hai nhân tố và 3 lần lặp lại nhằm đánh giá khả năng sinh trưởng của hai giống mè (vừng) ADB1 và hai vỏ Bình Thuận dưới ảnh hưởng của tưới nước sông nhiễm mặn. Thí nghiệm sử dụng nước ót pha với nước sông để có nồng độ mặn xát định bằng khúc xạ kế là 2%o và 4%o, trong đó nghiệm thức nước sông không pha nước ót là nghiệm thức đ)ối chứng 0%o. Kết quả sau khi tưới mặn liên tục 42 ngày (bắt đầu từ 30 NSKG) cho thấy, độ mặn 2%o và 4%o (tương ứng EC = 3,47 mS/cm - 6,09 mS/cm trong nước tưới) đã làm giảm số lá, số nhánh, số hoa, số trái và khối lượng 1.000 hạt của hai giống mè. Số trái và khối lượng 1.000 hạt của cây mè được tưới nước mặn 2%o và 4%o giảm 29% - 54% và 7% - 25% so với cây đối chứng tưới nước ngọt.

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