搜索结果: 1-15 共查到“农学 results”相关记录65条 . 查询时间(0.229 秒)
Influence of stand thinning and repeated fertilization on plant community abundance and diversity in young lodgepole pine stands: 15-year results
Biodiversity British Columbia Fertilization Forest management Lodgepole pine Plant productivity
2024/1/19
Enhanced forest productivity may provide the supply of wood fiber to keep pace with increasing global demand for wood products and the growing constraints on the harvestable land base imposed by measu...
Size-selective fishing results in trade-offs between fishery yield, reproductive capacity（图）
Size-selective fishing results fishery yield reproductive capacity
2020/3/20
How people fish matters as much as the quantity they’ve harvested, say University of Maine researchers Kara Pellowe and Heather Leslie.Their study in Ecosphere details the impacts of size-selective fi...
'Ghost forests' show visible results of changes in climate（图）
Ghost forests results changes in climate
2019/10/30
Sea level rise will have the greatest impacts on rural land in places where knowledge is insufficient to best inform decisions about encroaching marshlands, according to a review published in the jour...
Results of Czech ash provenance experiment
alluvial ecotype common ash height and diameter growth narrow-leaved ash progeny testing scree ecotype
2018/3/6
This study is focused on testing progenies of common and narrow-leaved ash based on the measurement of provenance
trial plots established in various forest regions under different site conditions wit...
Effect of low-density lipoprotein addition to soybean lecithin-based extenders on bull spermatozoa following freezing-thawing–preliminary results
bull sperm cryopreservation sperm motility viability cryoprotectant
2016/12/20
Soybean lecithin-based extenders represent an alternative to extenders containing egg yolk, but there has been discussion about their cryoprotective efficacy. Low-density lipoprotein (LDL) was proved ...
Methodology of processing the results of field experiment monitoring of the technological procedure of sowing
coulter trajectory acceleration amplitude curve Fourier transform
2016/4/5
The non-uniformity of distribution of seeds sown in a row influences their productivity. To analyse and eliminate the
causes of non-uniformities, the straight motion of coulters must be separated fr...
Selected results of the survey focused on the economic assessment of forest ecosystem services
forestry questionnaire survey recreational functions methods of valuation
2015/8/14
A survey was conducted in the Training Forest Enterprise called Masaryk Forest in Křtiny (TFE Křtiny)
in order to determine the extent of recreational use of the area, visitors’ travel cos...
Effect of housing system on reproductive results in ring-necked pheasants (Phasianus colchicus L.)
gamebird keeping performance reproduction
2015/7/2
A comparative analysis of reproduction parameters and hatchability results of pheasants raised under two different housing systems (cages and aviaries) was performed. In the first system the pheasants...
Goat mastitis detection using daily records of milk conductivity: comparative results of different algorithms
intramammary infection gland measurements on-line
2015/7/2
Milk electrical conductivity is employed for mastitis detection in cows due to its automation, low cost, and infection detectability at early stage. Nevertheless, the number of publications about its ...
Relationships between the results of hypo-osmotic swelling tests, sperm motility, and fertility in Estonian Holstein dairy bulls
bull fertility semen quality sperm membrane intactness
2015/6/23
However, the HOS-2 and HOS-3 values in FT semen
had high correlations with NRR (r = 0.65, r = 0.66, P < 0.001 at batch level and r = 0.63, r = 0.71, P < 0.01
at bull level), which was comparable t...
Results of pig carcass classification according to SEUROP in the Czech Republic
pig carcass classification accuracy
2015/6/8
Through data analysis of 7 571 883 pig carcasses slaughtered from 2004 to 2007 the means of quality classes (QC) 2.32, lean meat percentage (LM) 55.83%, carcass weight (CW) 87.21 kg, muscle thickness ...
Results of public tastings of apple novelties at the end of the storage seasons during the last 10 years
apples cultivars public tasting fruit quality
2015/6/8
From a total number of 62 apple samples included in this study, 42 cultivars or selections were evaluated after storing
in standard conditions, and the remaining 20 in ultra low oxygen (ULO) storing...
Reliability of results of milk urea analysis by various methods using artificial milk control samples
cow milk urea method of analysis result reliability recovery correlation
2015/6/5
The milk urea concentration (MUC) is a respected indicator of the health and nutrition status of dairy cows. It is in relation to their reproduction performance, longevity and technological milk indic...
Relationships between the results of various methods of urea analysis in native and enriched milk
cow milk urea analytical methods result reliability recovery correlation
2015/6/5
Milk urea concentration (MUC) is a suitable indicator of the health and nutrition state of dairy cows. MUC is in relation to their reproduction performance, longevity and technological milk indicators...
Comparison of calf rearing results and nursing cow performance in various beef breeds managed under the same conditions in north-western Poland
beef cattle breeds maternal nursing body weight gains
2015/6/4
We compared the results of calf maternal nursing and cow performance in 5 beef breeds managed under equal conditions in the region of West Pomerania. The study involved 549 cows and 1 979 calves (1 00...