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本文对日本新研制的除草剂禾草克在我国东北佳木斯、双城两地区的甜菜的残留情况进行了观察。结果表明:禾草克的半减期短,在土壤中的平均半减期为15天;总禾草克酸的平均半减期为24.5天。在甜菜收获期,土壤及甜菜中禾草克酸的最高残留量为0.02ppM。根据禾草克的ADI(0.01mg/kg/day),制定了禾草克在甜菜上的最高允许残留量(MRL)为0.1mg/kg。因此,我们认为禾草克是一种低毒、低残留,有发展前途的除草剂。
In this paper, the newly developed Japanese herbicide Wo Ke Ke in our country Jiamusi, Shuangcheng two beet residues were observed. The results showed that the half-life-duration of graminex was short, the average half-life in soil was 15 days, and the average half-life of total grass acid was 24.5 days. In beet harvest, the maximum residue of oxalic acid in soil and sugar beet was 0.02 pph. Based on the ADI (0.01 mg / kg / day) of grass powder, the maximum allowable residue (MRL) of grass powder on sugar beet was set at 0.1 mg / kg. Therefore, we believe that Wo Ke Ke is a low toxicity, low residue, promising herbicides.