タンサン セヒ ニ タイスル フンザイ ノ ケンキュウ : ダイ2ホウ フツウ サクモツ ニ タイスル サンプ シケン

The experiments were carried out at Kagoshima city and Kokubu city in kagoshima prefecture. The materials were Oryza sativa L., Triticum aestivum L., Panicum miliaceum L. and Glycine Max Merrill, and cultivated in a large area. The yields of experimental plots were larger than the control plot. The rate of increase was 10~20%. However the rate was lower than that of small area. In the general, the yields of crops in a large area may be increased by the dust