Khẩn trương phòng trừ rầy hại lúa
(QT) - Theo thông tin từ Chi cục Bảo vệ thực vật tỉnh Quảng Trị cho biết: Hiện nay trên đồng ruộng các trà lúa đang ở giai đoạn đứng cái, làm đòng. Thời tiết rất thuận lợi cho cây lúa phát triển đồng thời cũng tạo điều kiện cho các đối tượng dịch hại phát sinh gây hại đặc biệt là rầy nâu, rầy lưng trắng. Rầy các loại đã phát sinh gây hại trên địa bàn của tất cả các huyện, thị trong tỉnh, tổng diện tích nhiễm 2.850 ha trong đó hại nặng 90 ha. Rầy lưng trắng có mật độ phổ biến từ 700 - 2.000 ...
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