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・ used in plot expriments ( 1 × 1m ) , and crop − planting − was repeated several times . The results were as 抄 follows : a ) The amounts of water stable aggregate of soils treated with soil conditioners were more than control at 3years after treatment . b ) The ethciency of soil conditioners for the facilitation of germination was observed , But the number of seeds germinated was almost equal through all the pot at twenty days after seeding ( tab工 e 2 ) c ) 「 £ the effe ( : t of soildoi:10.20710/dojo.27.3_108_1 fatcat:bzmuimp4fjfijouemctoqm5c5i