About KOYAMA YUTAKA
About 日本植物調節剤研究協 研
About paddy rice
About herbicide
About Gramineae
About weed
About transplanting
About cultivation management
About weed control
About habitat environment
About Echinochloa oryzoides
About cropping environment
About herbicidal effect
About Rice cropping
About Pesticides to weeds
About 水稲
About 移植
About 温度条件
About 地域差
About ノビエ
About 生育速度