About YAGIOKA ATSUSHI
About HAYASHI SATOSHI
About KIMIWADA KENJI
About KONDO MOTOHIKO
About paddy rice
About puddling
About crop yield
About breed specificity
About plant growth
About labor saving
About Hokkaido
About きたげんき
About cultivation technology
About Rice cropping
About Soil management
About 北海道
About 多収
About 水稲
About 品種
About 代掻き
About 栽培
About 生育
About 収量