نتایج جستجو برای: organo mineral
تعداد نتایج: 68101 فیلتر نتایج به سال:
Parameters characterizing the structure of the decomposer food web, biomass of the soil microflora (bacteria and fungi) and soil micro-, meso- and macrofauna were studied at 14 non-reclaimed 1- 41-year-old post-mining sites near the town of Sokolov (Czech Republic). These observations on the decomposer food webs were compared with knowledge of vegetation and soil microstructure development from...
Purpose. To study the state of humus and content mobile phosphorus potassium in leached chernozem as affected by fertilisation system introduction leguminous crops into crop rotation. Меthods. Field experiment analytical method. Results. The data on humus, grain fields rotation under effect different systems are presented. It was established that soil increased significantly with application or...
The critical importance of corrosion protection puts it forward as a leading economic and applied problem for all countries. Costs associated with corrosion, even in developed countries, range from 1 to 3.5 per cent gross domestic product (GDP). This article discusses issues related the development composition anti-corrosion materials organo-mineral heterocomposites use structures storage trans...
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