Pyrimidine nucleotide Antibiotics is a highly-efficient and broad-spectrum alkali nucleotide microbial source bactericide which has functions of prevention protection and systemic treatment. The principle of sterilization is to directly restrain the synthesis of protein from pathogenic bacteria and kill pathogenic bacteria. This product has prominent function in preventing Fusarium wilt of watermelon, Alternaria leaf spot and mouldy core of apple, early blight of tomato, powdery mildew of melon, apple, grape and tobacco, wheat rust, and rice sheath blight disease.ect.