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水稻机械直播是水稻轻型栽培技术内容之一。在自 1 987年起持续进行的机械直播稻田化除药剂筛选试验的基础上 ,1 997年又进行了不同除草剂控制机械直播稻田杂草效果试验。1 材料与方法1 .1 供试药剂30 %扫特乳油 (瑞士汽巴嘉基公司产 ) ,6 0 %丁草胺乳油 (江苏昆山化工厂产
Rice mechanical live broadcast is one of the light-cultivation techniques of rice. On the basis of the mechanical direct seeding rice paddy pesticide screening test conducted continuously since 1987, we conducted another weed control experiment on weeds in direct-seeded rice fields by using herbicides in 1997. 1 Materials and methods 1 .1 30% of the test agent Swedes special EC (Swiss Ciba-based company), 60% Butachlor EC (Jiangsu Kunshan Chemical Plant production