Phòng trừ bệnh đạo ôn hại lúa
(QT) - Vụ đông xuân năm nay toàn tỉnh Quảng Trị gieo cấy trên 23.000 ha lúa, hiện cây lúa đang ở thời kỳ đẻ nhánh. Thời gian qua, thời tiết nắng ấm tạo điều kiện cho cây trồng sinh trưởng và phát triển, tuy nhiên cũng tạo điều kiện cho nhiều đối tượng sâu bệnh phát sinh gây hại như sâu keo, cuốn lá, chuột, rầy nâu, đạo ôn, bệnh vàng lùn, lùn xoắn lá, lùn sọc đen... trong đó, bệnh đạo ôn là đối tượng dễ phát sinh và gây hại nặng. Vì vậy, nông dân cần thường xuyên thăm đồng phát hiện sớm bệnh này ...
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