高雄市、屏東縣稻田殺草劑使用面積已達100%，高雄縣除一部份看天田外亦全面採用殺草劑防除稻田雜草。現在推廣之稻田殺草劑尚未臻理想地步，若能發展製造藥效持久殺草範圍廣之肥料殺草劑再節省人工降低生產成本更完美。舉辦殺草劑農民講習會，使農民充分瞭解雜草與殺草劑之特性及種類，期能在適藥、適時、適量及適法之原則下使用，獲得理想的防除效果。同一塊稻田繼續施用同一殺草劑其效果值得探討。

Herbicide application, except a small acreage of rainfed paddy field in Kaohsiung prefecture, in the paddy field of Kaohsiung city, Kaohsiung and Pingtung prefectures is nearly 100%. The available herbicides for paddy field show some shortage in their function. It will be more ideal if herbicide can be incorporated into fertilizer which may increase its residual effect and selectivity and thus lower rice production cost. It is suggested that the technical class has to be held for farmers to understand fully about the optimum application rate, time and method of herbicide. The effect of continuous application of the same herbicide in one paddy field should be further examined .