本着立足国产,混用兼治,提高防效,降低成本,减少施药次数的用药指导思想,以期逐渐取代进口除草剂氟乐灵的目的。通过1981～1982年在全区及海南岛的多点次小区试验和示范,选出了暂名为“442”、“82”“411”三个防效高于氟乐灵而成本接近或稍低于氟乐灵的新型复合配方。1983年又研究了优于三个配方的新组合,统一方案全区设6个试验示范点。 In the home-based, mix-and-cure, improve control efficiency, reduce costs and reduce the frequency of drug application guidelines, with a view to gradually replace the import of herbicide trifluralin purposes. Through 1981 to 1982 in the region and Hainan Island multi-point cell test and demonstration, selected tentatively named “442”, “82” “411” three control effect is higher than trifluralin and the cost is close to or slightly Lower than trifluralin new compound formula. In 1983, the new combination superior to the three formulations was studied, and six pilot demonstration sites were set up in the unified plan.