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在日本,98％以上的水稻属移栽稻,并且所用除草剂的剂型一般为颗粒剂。在最近几年里,日本水稻栽培中除草剂施用体系及除草剂本身发生了极为显著的变化:在常规体系中,除草剂在水稻生长的早、中、后期施用两次,甚至三次。近年来,由于新一代除草剂的出现,这种常规体系已越来越多地被所谓“一次性”施用所替代。这些“一次性”除草剂比常规产品有更长的控制时期,并对多种一年生和多年生杂草提供足够的防效。
In Japan, more than 98% of the rice is transplanted rice, and the herbicide used is usually in the form of granules. In recent years, there has been a very significant change in the herbicide application system and the herbicide itself in Japanese rice cultivation: In the conventional system, the herbicide is applied twice, even three times during the early, middle and late stages of rice growth. In recent years, due to the emergence of a new generation of herbicides, this conventional system has been increasingly replaced by so-called “one-off” applications. These “one-off” herbicides have a longer period of control than conventional products and provide adequate control of many annual and perennial weeds.