Investigations on the flora and crop plants of the land damaged by the war-fire in Osaka.

[摘要] 1. "Flora" and "growing phases of crop plants" in fire-raged districts in the city of Osaka are very monotonous, having been influenced by those of pre-war. This is, according to writer's opinion, because of the fact which th "Flora" and "growing phases of crop plants" had been kept under remarkable restriction by the narrow green land, the damage of heavy smoke and methane etc. 2. In the same districts, the plant was made. In it 71 families, 192 species in high class plans aboue Fern plant were described, containing 21 families, 67 spccies known as edible plants and 7 families, 11 species as poison plants. 3. Invasion of plants to the fire-raged district was started mainly from the places left from war-disaster and in consequence the flora was rearranged by paticular kinds as Amarantaceae, Chenopodiaceae and some parts of Asteraceae which are speady in seed-spreading and are full of vigour in procreative power. 4. Sail of fire-raged districts contains slight alkali and is dry and unproductive but it has not got worse. So if taken good corn and fertilized, no obstacle would be given to cultivation of crops. 5. Only in case of Cultivation of pulse crops, it is necessary to make infection of nodule bacteria or to spread soil containing them. 6. Self-supply gardening has been deen developed actively but in general yield per unit area is very small becanse of unproductivity and dry condition of the soil as well as lack of care. 7. Concerning to the fact of having been fire-raged, crop da mage by injurious insects and diseases is little and especially so in the case of the damage by soil-living insects or soil-infectiag pathogenes. iaceae and some parts of Asteraceae which are speady in seed-spreading and are full of vigour in procreative power. 4. Sail of fire-raged districts contains slight alkali and is dry and unproductive but it has not got worse. So if taken good corn and fertilized, no obstacle would be given to cultivation of crops. 5. Only in case of Cultivation of pulse crops, it is necessary to make infection of nodule bacteria or to spread soil containing them. 6. Self-supply gardening has been deen developed actively but in general yield per unit area is very small becanse of unproductivity and dry condition of the soil as well as lack of care. 7. Concerning to the fact of having been fire-raged, crop da mage by injurious insects and diseases is little and especially so in the case of the damage by soil-living insects or soil-infectiag pathogenes.

[学科分类] 农业科学（综合）