论文部分内容阅读
对60%环.敌可湿性粉剂不同剂量、不同施药时期、不同施药方式进行对比试验,探讨该除草剂在甘蔗田使用的安全性。结果表明,从施药时期看,以甘蔗生长2~4叶期施药比芽前施药或6~8叶期施药较安全;从施药方式看,以相对定向喷雾比直接封顶喷雾安全;从剂量看,以900 g a.i./hm2造成的药害轻且容易恢复,而2700 g a.i./hm2不仅药害重且不易恢复,1800 g a.i./hm2则介于上述两者之间。
The contrastive tests of different doses, different application periods and different application methods of 60% loop and rifamily WP were conducted to investigate the safety of the herbicide in the sugarcane field. The results showed that it was safer to apply pesticides in the period of 2 to 4 leaf stages of sugarcane than the pre-emergence or 6 to 8 leaf stages in the growth period of sugarcane. From the perspective of application mode, In terms of dose, phytotoxicity caused by 900 g ai / hm2 was light and easy to recover, while 2700 g ai / hm2 was not only heavy and hard to recover, but 1800 g ai / hm2 was between the two.