FIELD: agriculture.SUBSTANCE: method of improvement of fertility of soil for tree and grass cultures comprising the extraction of silt from places of its formation, and after production of silt it is treated to remove excess moisture content, then it is placed into containers for consequent transportation and before planting of woody plants or grass cultures in soil a trench is made and there the layers of extracted silt and removed soil are backfilled sequentially, tree or grass cultures are planted, meanwhile a trench is formed down to the lower level of fertile soil, and sequential backfilling of layers of extracted silt and removed soil is performed after the beginning of forming of the trench, then in places of backfilling of silt and removed soil the holes are formed periodically, which are filled by water and injected by biological organisms for conversion of silt and improvement of soil fertility, meanwhile between the sequentially located trenches with the sequentially backfilled extracted silt and removed soil an additional trench is formed, where below the tillage depth one or several parallel sequences of troughs are laid, above which at a capillary clearance a sequence of tightly connected plastic pipes with the lower long slots are located, and the beginning of plastic pipes and their end are connected to the pipeline for supply of irrigation water and to the pipeline for air removal from plastic pipes, then the tillage of total soil is performed and tree cultures are planted or grass cultures are sawn.EFFECT: invention allows to reduce a work cycle of forming of soil fertility.3 dwgИзобретение относится к сельскохозяйственному производству. Способ повышения плодородности почвы для древесных и травянистых культур, включающий извлечение ила из мест его формирования, и после добычи ила из него удаляют избыточную влажность, после чего упаковывают в контейнеры для последующей транспортировки и перед посадкой древесных растений или травянистых культур в поч