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自1950年除草剂2,4-滴首次在日本水稻田用以代替传统的人工除草以来,已开发了许多其它的有效除草剂,并已应用于旱田、果园、水稻田和其它作物田。1983年,日本耕作面积为550万公顷,其中40％(约230万公顷)为水稻田。稻田用除草剂占除草剂市场的60％(600亿日元);其它作物用除草剂销售额为17亿日元;多年生作物用除草剂销售额为23亿日元。现时,除草剂施用总面积估计为900万公顷,其中50％以上为水稻田。旱田和多年生作物的面积分别占22％与20％。植物生长调节剂有用于无核葡萄、烟草侧芽控制、水果催
Since the herbicide 2,4-D was first used in paddy fields in Japan as a replacement for conventional artificial weeding in 1950, many other effective herbicides have been developed and applied to fields, orchards, paddy fields and other crop fields. In 1983, Japan cultivated 5.5 million hectares, of which 40% (about 2.3 million hectares) were paddy fields. Rice herbicides account for 60% of the herbicide market (60 billion yen); other crop herbicides sales of 1.7 billion yen; and perennial crop herbicides sales of 2.3 billion yen. At present, the total area under herbicide application is estimated at 9 million hectares, of which over 50% are paddy fields. The area of upland and perennial crops accounts for 22% and 20% respectively. Plant growth regulators are used for seedless grapes, tobacco lateral bud control, fruit reminder