Chọn đáp án đúng 1. Loại phân bón nào sau đây thuộc nhóm phân vi sinh? a. Phân bắc b. Phân chuồng c. Phân bón có chứa vi sinh vật chuyển hóa đạm d. Phân đạm 2. Khi sử dụng phân bón phải chú ý đến? a. Đặc điểm và tính chất của phân bón b. Đặc điểm của phân bón c. Tính chất của phân bón

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