搜索结果: 1-9 共查到“土壤学 N-balance”相关记录9条 . 查询时间(0.125 秒)
Impact of Arable Land to Grassland Conversion on the Vegetation-period Water Balance of a Small Agricultural Catchment (Němčicky Stream)
hydrological extremes hydrological modelling land use change water balance
2015/3/2
This paper presents results of decadal (10-day) water balance simulations for the vegetation periods (April to October) of 2001 (normal year), 2002 (wet year) and 2003 (dry year) in the Němčicky ...
Organic and inorganic carbon stocks and balance of Adana city soils in Turkey
Adana soils soil organic carbon amounts and stocks
2011/1/12
Carbon stocks are calculated between from 0 - 100 cm depths of Adana great soil groups (GSG). Total carbon stock is 567.19 Tg in 0 - 100 cm, 168.37 Tg of which is organic carbon (OC) and 398.83 Tg of ...
Effects of Soil Clay Content on Water Balance and Productivity in Rainfed Lowland Rice Ecosystem in Northeast Thailand
Oryza sativa Paddy Percolation Seepage Water table
2009/7/23
Water availability is one of the determinants of productivity of rainfed lowland rice (Oryza sativa L.). Quantifying water losses from a paddy field, such as deep percolation and lateral seepage, assi...
Nitrogen balance and dynamics as affected by water table and fertilization management in celery（Apium graveolens）cropping system of southwestern China
Agricultural ecosystem gaseous N emissions N leaching
2009/3/3
There is a great concern on N cycle and dynamics in intensive cropping agricultural ecosystems because of their possible negative environmental consequences. Field experiments were conduced at the D...
Outlook for World Fertilizer Demand, Supply, and Supply/Demand Balance
Agricultural production fertilizer demand fertilizer supply
2009/1/8
The outlook is driven by impressive economic growth in Asia, increasing demand for biofuel, and a tight grain market. As a result of tight supply/demand conditions, prices for almost all agricultural...
THE NUTRIENTS BALANCE OF CROP ROTATION AS AN INDICATOR OF SUSTAINABLE FARMING ON ARABLE LAND
nutrient balance crop rotation soil tillage
2010/12/7
The nutrient balance of five crop rotation systems under conventional and minimal tillage with interaction of different fertilization treatments was investigated at the experimental station of Slovak ...
Effect of fertilisation systems on the balance of plant nutrients and soil agrochemical properties
heavy loam brown soil fertilising system crop rotation phosphorus and potassium humus
2010/1/13
In the organic fertilisation system, the application of only 80 t ha‑1 of farmyard resulted, compared with the mineral fertilisation system, in a humus content increase in the plough layer by 0....
The impact of vegetation and soil parameters in simulations of surface energy and water balance in the semi-arid sahel: A case study using SEBEX and HAPEX-Sahel data
Semi-arid area Land parameters Model validation
2014/5/19
A series of numerical experiments has been designed to understand the physics at the land surface–atmosphere interface in the Sahel and to find the major parameters and parameterizations that are cruc...
Phosphorus status of diverse soils in Finland as influenced by long-term P fertilisation 2.Changes of soil test values in relation to P balance with references to incorporation depth of residual and freshly applied P
Acetate extractable P Olsen P sampling depth total P water extractable P
2010/8/13
Fertilising with phosphorus (P) ensures continuous supply of an essential growth factor as necessary for productive and sustainable agriculture. The amounts of P required to attain and maintain an ade...