豊田 政一

野菜導入による新たな土地利用試 

北農(1996) 63：pp.234-236  

Vegetable Production in Large Scale Field Farming in Tokachi, Hokkaido 

Nogyou Gijutsu (Journal of Agricultural Science) Vol.50, No.6, pp.246-250(in Japanese) (June 1995)  

Uniformity of Head Weight of Cabbage in the Direct Seeding Cultivation Method(Abstract) 

The 3rd Asian Crop Science Conference (1998). P.84  

Improvement of Wheat Quality for Japanese Noodle 

Nogyo oyobi Engei (Agri-and Horticulture) Vol.65, No.3, pp.426-432 (in Japanese) (Mar. 1990)  

Effect of continuous cropping on yield of field crops 

Crop Production and Improvement Technology in Asia pp.17-25, (Sept. 1992)  

Vegetable Production in Large Scale Field Farming in Tokachi, Hokkaido 

Nogyou Gijutsu (Journal of Agricultural Science) Vol.50, No.6, pp.246-250(in Japanese) (June 1995)  

Uniformity of Head Weight of Cabbage in the Direct Seeding Cultivation Method (Abstract) 

The 3rd Asian Crop Science Conference (1998). P.84  

Improvement of Wheat Quality for Japanese Noodle 

Nogyo oyobi Engei (Agri-and Horticulture) Vol.65, No.3, pp.426-432 (in Japanese) (Mar. 1990)  

Effect of continuous cropping on yield of field crops 

Crop Production and Improvement Technology in Asia pp.17-25, (Sept. 1992)