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通过20%噁唑·灭草松微乳剂防除单季晚稻直播田主要杂草田间试验,明确其对单季晚稻直播田杂草的防除效果、应用技术及对秧苗的安全性。结果表明,20%噁唑·灭草松微乳剂对单季晚稻直播田稗草、千金子、莎草及阔叶杂草有良好防效,对丁香蓼、耳叶水苋的防效明显好于6%五氟·氰氟草油悬浮剂施药区,可弥补6%五氟·氰氟草悬浮剂和2.5%五氟磺草胺悬浮剂对丁香蓼、耳叶水苋防效的不足,是目前晚稻直播田禾本科、阔叶草双除的良好除草药剂,但对水竹叶无效。在单季晚稻直播田上应用20%噁唑·灭草松微乳剂除草,施药时间以播种后15 d为宜。每667 m2推荐量360~400 m L。
A field experiment was conducted to control the main weeds in the single season late rice direct seeding field by using 20% oxazole and imazapyr microemulsion. Its control effect on weeds in single season late rice and its application technology and its safety to seedlings were clarified. The results showed that the 20% oxazole · bentazon microemulsion had good control effect on barnyardgrass, millet, sedge and broadleaf weeds in the direct seeding of late season rice, In 6% Pentaflor cyanide oil suspension application area, can make up for 6% Pentafluor cyanofurate SC and 2.5% of the penoxsulam SC Susceptibility of Polygonum clover, leafwort amaranth , Is now broadcast late rice grasses, broadleaf double addition to good herbicides, but invalid for the water bamboo leaves. Applying 20% oxazole and imazapyr microemulsion weeding in the single season late rice direct seeding field, the application time should be 15 days after sowing. 360 ~ 400 m L per 667 m2 recommended.