搜索结果: 1-6 共查到“农学 Long-term Effects”相关记录6条 . 查询时间(0.109 秒)
Long-term effects of CO2 enrichment on bud phenology and shoot growth patterns of Norway spruce juvenile trees
bud elevated CO2 Norway spruce phenology shoot length
2015/3/19
Bud phenology and shoot elongation growth were monitored on Norway spruce (Picea abies [L.] Karst.) trees grown inside glass domes with adjustable windows for six years under ambient (355 μmol CO2W...
Long term effects of treated wastewater irrigation on calcisol fertility: A case study of Sfax-Tunisia
Arid Region Wastewater Irrigation,Fertility El Hajeb-Sfax
2013/3/4
The use of treated wastewater (TW) for irrigation is increasingly being considered as a technical solution to minimize soil degradation and to restore nutrient content of soils. Indeed, TW usually con...
Long-term effects of management systems on crop yield and soil physical properties of semi-arid tropics of Vertisols
Broadbed and Furrow System Minimum Tillage Long-Term Experiment Sustainability
2013/3/5
Long-term experiments can be used to assess management induced changes in soil properties and sustainability of the management system in terms of the productivity. Such data are scanty, especially in ...
Long-term effects of different burning frequencies on the dry savannah grassland in South Africa
Fire treatment rangeland management soil nutrients soil macro fauna grass biomass
2009/3/4
The use of fire in the management of grassland is a common rangeland practice in South Africa. This portends ecological implication for the sustainability of the savannah rangelands as a system. A l...
Long-term effects of tillage, sub-soiling, and profile strata on properties of a Vitric Andosol in the Kenyan highlands
Bulk density Hydraulic conductivity Infiltration rate Soil organic carbon
2009/2/19
Tillage alters the structure and composition of soil aggregates affecting infiltration rate (IR) and hydraulic conductivity (K). This study investigated the long-term effects of conventional, minimum,...
Long-term effects of crop rotation and fertilizers on weed community in spring barley
Crop rotation chemical fertilizer spring barley (Hordeum vulgare L.) weed community
2010/1/11
Integrated weed management programs require a clear understanding of the mechanisms influencing the establishment, growth, and reproduction of unwanted plants (weeds) in agro-ecosystems. This study ev...