搜索结果: 1-15 共查到“农学 water use”相关记录43条 . 查询时间(0.125 秒)
Higher leaf nitrogen content is linked to tighter stomatal regulation of transpiration and more efficient water use across dryland trees
arid ecosystems ci/ca ratio leafδ13C leaf δ18O plant isotopic composition
2023/11/28
The least-cost economic theory of photosynthesis shows that water and nitrogen are mutually substitutable resources to achieve a given carbon gain. However, vegetation in the Sahel has to cope with th...
Amplifying effects of recurrent drought on the dynamics of tree growth and water use in a subalpine forest
dehydration dynamics drought legacy effects stem capacitance
2023/11/28
Despite recent advances in our understanding of drought impacts on tree functioning, we lack knowledge about the dynamic responses of mature trees to recurrent drought stress. At a subalpine forest si...
Convergence in water use efficiency within plant functional types across contrasting climates
water use efficiency plant functional types climates grassland permanent wetland savannah deciduous broadleaf and deciduous needleleaf forest
2023/11/28
Water use efficiency (WUE) provides a direct measure of the inextricable link between plant carbon uptake and water loss, and it can be used to study how ecosystem function varies with climate. We ana...
Drought impacts on tree carbon sequestration and water use - evidence from intra-annual tree-ring characteristics
carbon sequestration extreme drought intrinsic water-use efficiency physiological drought point dendrometer quantitative wood anatomys table carbon isotopes xylogenesis
2023/11/20
The impact of climate extremes on forest ecosystems is poorly understood but important for predicting carbon and water cycle feedbacks to climate. Some knowledge gaps still remain regarding how drough...
Tree Water Use, Water Use Efficiency, and Carbon Isotope Discrimination in Relation to Growth Potential in Populus deltoides and Hybrids under Field Conditions
poplar (Populus) hybrid water-use efficiency sap flow productivity carbon isotope discrimination stomatal conductance
2024/2/27
We explored the relationship between tree growth, water use, and related hydraulic traits in Populus deltoides Bartr. ex Marsh.and hybrid clones, to examine potential trade-offs between growth and wat...
SPATIO-TEMPORAL VARIATIONS OF SOIL WATER USE IN THE GROWING SEASON IN NORTHEAST CHINA USING MODIS DATA
Soil Water Use Gross Primary Productivity Visible and Shortwave Infrared Drought Index (VSDI) MODIS Spatio-temporal Pattern Growing Season Northeast China
2018/5/11
Water use efficiency is known as an important indicator of carbon and water cycle and reflects the transformation capacity of vegetation water and nutrients into biomass. In this study, we presented a...
Timer versus moisture sensor-based irrigation control of soilless lettuce:Effects on yield,quality and water use efficiency
Lactuca sativa L.var.capitata greenhouse volumetric water content leaching easily available water
2016/6/3
The study compares the effects of: timer (‘Timer’) and soil moisture sensor-controlled irrigation on soilless lettuce; two volumetric water content (Θ) thresholds for irrigation (0.30 (‘Θ = 0.3’) and ...
Contrasting growth and water use efficiency after thinning in mixed Abies pinsapo–Pinus pinaster–Pinus sylvestris forests
basal area increment carbon isotopes dendroecology
2016/3/2
Foresters frequently lack sufficient information about thinning intensity effects to optimize semi-natural forest management and their effects and interaction with climate are still poorly understood....
Water use, growth, and yield of drip irrigated cassava in a humid tropical environment
cassava drip irrigation irrigation regimes soil-water regimes supplemental irrigation water use water use efficiency yields
2015/3/3
Field experiments were conducted at the Agricultural Engineering Experimental Farm of The Federal University of Technology, Akure, during 2006/2007 and 2007/2008 seasons to investigate the response of...
Effect of closed circuits drip irrigation system and lateral lines length on growth, yield, quality and water use efficiency of soybean crop
Closed Circuits Drip Irrigation Lateral Lines Soybean WUE
2013/2/28
Field experiment was conducted for one growing season (2012) in clay loam soil at the Experimental Farm of Faculty of Agriculture, Southern Illinois University at Carbondale (SIUC), USA on soybean cro...
Evapotranspiration and water-use efficiency of irrigated colored cotton cultivar in semiarid regions
Bowen Ratio Crop Evapotranspiration Irrigation Treatments Seed-Cotton Yield
2013/3/4
Irrigation studies provide a framework for evaluating agricultural production and the water resource management in locations where water is scarce. Field experiments were conducted at Barbalha- CE (no...
Cereal-forage crop rotations and irrigation treatment effect on water use efficiency and crops sustainability in Mediterranean environment
Alfalfa Binary Mixture Durum Wheat lrrigation
2013/2/27
Agricultural systems based on crop rotations favour sustainability of cultivation and productivity of the crops. Wheat-forage crops rotations (annual winter binary mixture and perennial alfalfa meadow...
Water use efficiencies of maize cultivars grown under rain-fed conditions
Water Use Efficiency Maize Cultivars Rain-Fed
2013/3/4
Enhancing water use efficiencies of rain-fed maize is a requirement for sustainable maize production, particularly in areas prone to low/drought and erratic rainfall patterns. This study was conducted...
Water use efficiency and yield of winter wheat under different irrigation regimes in a semi-arid region
Water Use Efficency Yield Surface and Drip Irrigation
2013/3/4
In irrigation schemes under rotational water supply in semiarid region, the water allocation and irrigation scheduling are often based on a fixed-area proportionate water depth with every irrigation c...
Effect of water stress at different periods on seed yield and water use efficiency of guar under Shambat conditions
Guar Water Stress Water Use Efficiency Harvest Index
2013/3/4
Water stress effects on seed yield and water use efficiency of three indeterminate guar (Cyamopsis tetragonoloba L. Taub.) lines (L12, L18 and L33) were investigated in the experimental farm of the Fa...