50%YRC2388 WP防除水直播稻田杂草效果评价

Evaluation of 50% YRC2388 WP Herbicidal Efficacy in Direct-seeded Rice Fields

对50%YRC2388WP新型水稻田除草剂的防除效果进行了研究。结果表明,播后6d用75～150g/hm2YRC2388WP处理,对稗草和千金子的防效分别为90.2%～100%和100%,播后9d用125～300g/hm2处理,对稗草和千金子的防效分别为91.5%～100%和99.1%～100%;播后9,12d用药,对水稻基本苗基本无影响;从考种结果看50%YRC2388WP播后6,9,12d用药的各处理,理论产量均有较大的提高。

YRC2388 WP is a new paddy land herbicide developed by Bayer company. Treatments of YRC2388 WP 75～150 g /ha applied after seeding 6 days and 125～300 g /ha applied after seeding 9 days had 90.2%～100%,100%and 91.5%～100%,99.1%～100% control efficacy against Echinochloa crusgalli and Leptochloa chinensis respectively; application of 9 and 12 days treatment had no effect on paddy seedling; theory yields of each treatments were increased.