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用盆钵生测法测定了水稻田除草剂F8602 可湿性粉剂对直播粳稻及抛秧粳稻的安全性。结果表明,F8602 可湿性粉剂对粳稻的安全性与苗龄、栽培方式及剂量相关。60g/ 亩对播后苗前、芽鞘期粳稻生长影响显著,因此该药剂在粳稻播后苗前、芽鞘期禁用;1 叶1 心期对该剂量也很敏感,但后期恢复生长较好;F8602 可湿性粉剂在常规剂量下对2 叶1 心期以后的粳稻生长影响不大,但对抛秧田的粳稻生长有明显影响。
The pot experiment was conducted to determine the safety of paddy field herbicide F8602 WP on direct seeding japonica rice and rice throwing japonica. The results showed that the safety of F8602 WP to japonica rice was related to seedling age, cultivation methods and dosage. The effect of 60g / mu on the growth of japonica seedlings was significant before and after sowing, and therefore the agent was banned before and after sowing in japonica rice. The 1-leaf-1 cardiac phase was also sensitive to this dose, but the recovery was good at the later stage ; F8602 wettable powder had little effect on the growth of japonica rice after two-leaf and one-leaf stages under the conventional dose, but had obvious effect on the growth of japonica rice in the seedling throwing.