Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Ảnh hưởng của việc bổ sung nước rỉ rác của bãi chôn lấp đến quá trình trao đổi khí của cây giống hướng dương (Helianthus annuus L.) dưới điều kiện stress hạn.
Tóm tắt
Nước rỉ rác từ bãi chôn lấp vệ sinh là một trong những vấn đề chính phát sinh từ việc xử lý rác thải đô thị. Tuy nhiên, nước rỉ rác này có thể được sử dụng trong nông nghiệp. Do đó, nghiên cứu này nhằm phân tích sự sinh trưởng ban đầu của cây và quá trình trao đổi khí trong cây giống hướng dương được bổ sung nước rỉ rác từ bãi chôn lấp vệ sinh và chịu stress hạn hán thông qua các biến số khối lượng tươi của rễ (RFM), khối lượng tươi của thân (SFM), tổng khối lượng tươi (TFM), hàm lượng diệp lục tương đối (CL), sự dẫn khí (gs), tỷ lệ thoát hơi nước (E), tỷ lệ quang hợp ròng (A), tỷ lệ nồng độ CO2 bên trong và bên ngoài (Ci/Ca), hiệu quả sử dụng nước (EUA), hiệu quả carboxyl hóa tức thời (A/Ci), và tỷ lệ vận chuyển electron (ETR). Thiết kế thí nghiệm là hoàn toàn ngẫu nhiên với 2 yếu tố (tưới nước và không tưới nước) × 4 yếu tố (cát, cát + 100 kg N ha−1 phân hữu cơ, cát + 100 kg N ha−1 nước rỉ rác từ bãi chôn lấp vệ sinh, và cát + 150 kg N ha−1 nước rỉ rác từ bãi chôn lấp vệ sinh) với năm lần lặp. Dưới điều kiện stress hạn hán, xử lý nước rỉ rác bổ sung 100 kg N ha−1 cho thấy khối lượng tươi của cây cao hơn so với xử lý có chứa 150 kg N ha−1. Sự tăng trưởng khối lượng tươi trong các mẫu cây được bổ sung 100 và 150 kg N ha−1 nước rỉ rác từ bãi chôn lấp vệ sinh có liên quan đến tỷ lệ quang hợp cao hơn.
Từ khóa
#nước rỉ rác từ bãi chôn lấp #cây giống hướng dương #stress hạn #quá trình trao đổi khí #nông nghiệpTài liệu tham khảo
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