不同除草剂对水稻直播田稗草的防除作用探究

Study on the Control Effect of Different Herbicides on Barnyard Grass in Rice Direct Seeding Field

试验选择了防除田间稗草常见的除草剂五福磺草胺以及其复配制剂、双草醚制剂、氢氟草酯制剂,探究不同用量的制剂对水稻直播田稗草的防除效果及其安全性。结果显示:利用20%的氢氟草酯制剂、5%的五氟磺胺草制剂、24%的五氟·吡·氰氟制剂、15%的双草醚制剂以及18%的五氟氰氟制剂,均对水稻直播田中的稗草就有较好的防治效果,并且这些常用药在规范的用药量下,基本能够达到90%以上的防治效果。氢氟草酯、五氟磺草胺和双草醚等除草药剂等产品轮换使用的除草方式既可有效防治稗草又不会对水稻产生药害。但需要注意这些药剂的用药量并需要轮换用药,避免对稻田的正常生长产生危害。

In the experiment,we selected the common herbicide pentafofomesafen and its compound,diclofenac and hydroflufenoxifen to control barnyard grass in the field,and explored the control effect and safety of different dosage preparations on barnyard grass in the rice direct seeding field.The results showed that 20%hydroflorate,5%pentafluorosulfame and 24%pentafluoropyrazine were used Cyanofluoride preparation,15%diclofenac ether preparation and 18%pentafluorocyanofluoride preparation have good control effect on grass worship in rice direct seeding fields,and these commonly used drugs can basically achieve more than 90%control effect under the standard dosage.The rotation of herbicides such as hydroflufenoxifen,pentafluorofomesafen and diclofenac can effectively control barnyard grass without harming rice.However,attention should be paid to the dosage of these chemicals and they should be used in rotation to avoid harming the normal growth of rice fields.