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~(14)C-多菌灵,用硫脲法标记合成,其产率51％,含量99％,产品达到放化纯。~(14)C-多菌灵在水稻上示踪表明:水稻叶片和根系对多菌灵均能吸收,运转积累于植株各部。~(14)C-多菌灵及其代谢产物在水稻上的残留量,因施药时期、施药次数、施药量、早晚稻品种和露天与防雨等条件的不同而不同。水稻分蘖期、破肚期、齐穗期先后连续施药三次,糙米中的残留量,早稻为1.365ppm,晚稻为0.610ppm。~(14)C-多菌灵及其代谢产物在土壤中的残留量亦随着施药时期的推迟,施药次数和施药量的增加而增加的。但大部分残留积累于0～5厘米土层中。雨水对多菌灵在水稻上残留积累影响很大,特别是喷药后首次降雨。
~ (14) C-carbendazim, labeled with thiourea synthesis, the yield of 51%, the content of 99%, the product reached radiochemical purity. ~ (14) C-carbendazim traced in rice showed that rice leaves and roots can be carbendazim can absorb, the operation accumulated in each plant. ~ (14) C-carbendazim and its metabolites in rice residue, due to the application period, the number of applications, the amount of application, early and late rice varieties and open air and rain and other conditions vary. Rice tillering stage, break the belly phase, heading stage has applied three times in a row, brown rice residues, early rice is 1.365ppm, late rice is 0.610ppm. ~ (14) C-carbendazim and its metabolites in the soil residues also with the delay of the application period, the number of applications and the amount of drug increases. However, most of the residue accumulated in 0 ~ 5 cm soil layer. Rain on carbendazim in rice residue accumulation has a great impact, especially after the first rainfall rainfall.