نتایج جستجو برای: humus levels of 0
تعداد نتایج: 21348529 فیلتر نتایج به سال:
Goal. To establish features of the influence differentiation (address rationing) mineral nitrogen fertilizers application on agrochemical indicators dark chestnut weakly alkaline soil (the content and humus) crop yield. Methods. Field — to study effect gypsum fertilizer properties yields, laboratory analysis o determine humus, mathematical assess reliability research results. Results. The has l...
one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...
Understanding the contents and stoichiometry of carbon (C), nitrogen (N), phosphorus (P) is vital to evaluate function processes a forest ecosystem. Overall, 18 sites in Shennongjia Forest from an altitude 800 3000 m were selected collect litterfall, humus, soil (0–20 20–40 cm) samples May, August, December. The spatio-temporal distribution C, N, P their quantified, underlying driving factors a...
abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
Investigations were carried out in the European Russian Northeast (Komi Republic), -in middle taiga subzone, (construction sand) quarry area. Formation of soil profile within two decades after forest reclamation practices (Pinus sylvestris planting) was considered. Specifics litter and humus horizons formation, processes formation accumulation on substrates different granulometric composition d...
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