日本一位大学教授研究出利用再生纸覆盖材料来代替既污染环境又对人体有害的除草剂。这种再生纸是用废旧的瓦楞纸板纤维溶对于水平，加入淀粉称制成的。把这种再生纸卷在滚子上，作为覆盖材料销在水平，再在覆盖材料上相洞栽种稻秧。由于这种再生纸被水沾温后便会与土地紧贴在 A Japanese university professor has developed the use of recycled paper covering materials to replace both polluting the environment and harmful to human beings herbicides. This recycled paper is the use of waste paperboard corrugated cardboard for the level, made of starch. The recycled paper roll on the roller, as the cover material pin level, and then cover the material on the hole planted rice seedlings. Since this kind of recycled paper is warm with water, it will be close to the land