金普施特土壤残留对后茬作物影响的研究

Study on Effect of Residues of Imazethapyr/Imazamox in Soil to Succeeding Crops

1999～2002年进行了大豆田除草剂金普施特土壤残留对后茬作物影响的小区试验。试验结果表明,金普施特50g/hm2(有效成份,下同)推荐剂量和倍量100g/hm2处理,施药后12个月可种植小麦和玉米。50g/hm2推荐剂量下24个月后种植白瓜籽、油菜、马铃薯、亚麻、白菜无明显药害,倍量亚麻、白菜苗期有轻度抑制,对甜菜药害严重。36个月后,50g/hm2处理对甜菜无明显药害,加倍剂量对亚麻、白菜也无明显药害,对甜菜苗期生长仍有较明显抑制,但对产量影响不显著。

The field trial on effect of residues of imazethapyr/imazamox in soil on succeeding crops were conducted during 1999～2002. The results showed that the sensitivity of succeeding crops to the herbicide was different. Under the commended dosage of imazethapyr/imazamox 50g,ai/hm^2, it is safe that planting wheat and corn after 12 months and planting rape, pumpkin, potato, flax, Chinese cabbage after 24 months, or planting beet after 36 months. At double dosage of imazethapyr/imazamox 100 g,ai/hm^2, there were severely harmful to sensitive crops besides flax, Chinese cabbage and beet after 24 months.