百菌清烟剂在温棚黄瓜韭菜上的残留动态研究

The Residues of Chlorothalonil Fume Agent in Vegetables in Green House

本文阐明了百菌清烟剂在温棚黄瓜、韭菜等蔬菜作物上的消解规律。研究结果表明,该药用于温室防治黄瓜霜霉病每公顷有效剂量为375g,最高用量600g,用药2次后收获间隔期1d,原始附着量在10mg/kg以下,半衰期为3—5d。该剂型用于温棚韭菜防治灰霉病,每公顷有效剂量450g,用药2次,最高用量750g,用药1次,收获间隔期3d,原始附着量在1.0mg/kg以下,半衰期为5—7d。

The Residues of Chlorothalonil Fume Agent in Vegetables in Green House. Shi Jian.(Hebei Agriculture University, Baoding 071001), Agroenvironmental Protection, 1992, 11( 5 ): 212—215The residue trials of chlorothalonil smok agent used for control vegetable disease at 0.375-0.60 kg ai/ha on cucumber and 0. 45-0. 75kg ai/ha on fragrant-flowered garlic in green-house were conducted. The results showed: the residue on the cucumber 1 day after the last application at 0.6kg ai/ha was below MRL 1.0mg/kg recommened by FAO/WHO. The residue on the fragrant-flowered garlic 3 days after the last application at 0.75kg ai/ha was below MRL 0.1mg/kg.