搜索结果: 1-15 共查到“农学 Long Term”相关记录97条 . 查询时间(0.207 秒)
Long-Term Soil Fertility and Site Productivity in Stem-Only and Whole-Tree Harvested Stands in Boreal Forest of Quebec (Canada)
forest biomass whole-tree harvesting soil productivity site quality index soil provinces
2023/12/19
Using residual biomass from forest harvesting to produce energy is viewed increasingly as a means to reduce fossil fuel consumption. However, the impact such practices on soil and future site producti...
A Planted Forest Mapping Method Based on Long-Term Change Trend Features Derived from Dense Landsat Time Series in an Ecological Restoration Region
planted forests long-term change trend features Landsat time series Google Earth Engine random forest NDVI
2023/12/1
Planted forests provide a variety of meaningful ecological functions and services, which is a major approach for ecological restoration, especially in arid areas. However, mapping planted forests with...
Effects of Long-Term Successive Rotations, Clear-Cutting and Stand Age of Prince Rupprecht’s larch (Larix principis-rupprechtii Mayr) on Soil Quality
soil quality successive planting generation stand age clear-cutting Larix principis-rupprechtii Mayr
2024/2/28
A decline in soil quality is a major factor contributing to the degradation of forest ecological function. Vegetation plays a vital role in maintaining soil quality; however, the influence of plantati...
Long term cropping and selected parameters of 15 apple tree cultivars
Malus domestica Borkh tree vigour yield efficiency tree performance spurring habit
2018/3/6
Fifteen apple cultivars registered in the Czech Republic were included in this comparative study. The most productive
after eight years of cropping was ‘Rucla’, which had a mean yield of 50.9 t/ha. T...
Long-term study aims to understand prairie ecology after farmland is forsaken（图）
Long-term study aims prairie ecology farmland forsaken
2017/9/5
Across the U.S., farmers have abandoned millions of acres of land due to economics and hindrances such as dropping water tables that make irrigation of crops impossible. Since 2001, a longstanding stu...
Long-term fate of tropical forests may not be so dire
Long-term fate tropical forests may not so dire
2017/7/19
Tropical rainforests are often described as the “lungs of the earth,” able to essentially inhale carbon dioxide from the atmosphere and exhale oxygen in return. The faster they grow, the more they mit...
Precocity and a long-term cropping in apple progenies grown on M 9 rootstock
Malus × domestica cropping progeny segregation apple breeding
2016/12/8
The fruiting of 23 apple progenies, in total 756 genotypes grafted on M 9 rootstock, was evaluated for 11 years (2005–2015). The most precocious was the progeny obtained by the crossing of genotype HL...
Long-term administration of DHEA prevents fat deposition in rats fed a high-fat diet
dehydroepiandrosterone lipid metabolism lipogenic gene expression
2016/5/11
The effects of dehydroepiandrosterone (DHEA) on lipid metabolism and lipogenic gene mRNA expression in rats subjected to a high-fat diet were determined. Totally 75 rats were randomly divided into 5 g...
Determination of Genetic Diversity Using 15 Simple Sequence Repeats Markers in Long Term Selected Japanese Quail Lines
Simple Sequence Repeats Selection Breeding Genetic Diversity Quail
2016/12/28
Japanese quail is still used as a model for poultry research because of their usefulness as laying, meat, and laboratory animals. Microsatellite markers are the most widely used molecular markers, due...
Long-term evaluation of bicipital tenodesis with T-staple in three dogs:a case report
biceps brachii tendon ultrasonography staple dog
2016/3/24
The purpose of this report is to describe the T-staple tenodesis of biceps brachii in three client-owned dogs and long-term ultrasonographic follow-ups. The orthopaedic examination revealed grade 2/4 ...
Long-term storage of service tree (Sorbus domestica L.) seeds and induction of their germination
stratification cold storage seed coat inhibitors dormancy
2015/11/26
Service tree (Sorbus domestica L.) is a significant species with regard to the biodiversity of specific habitats. Its reproduction in natural conditions appears to be problematic and in the interest o...
Influence of long-term exposure to lead on its accumulation and elimination from tissues and on selected reproductive parameters in the Prussian carp (Carassius gibelio B.) in pond environment
Pb fish bioaccumulation depuration luteinizing hormone
2015/10/29
The bioaccumulation of lead in selected tissues of Prussian carp kept in pond condition during 12 and 24 months of exposure to different doses (8, 13, 24, and 49 mg/kg) of this metal in feed and its e...
Effects of long-term liquid commercial semen extender and storage time on the membrane quality of boar semen
boar semen long-term liquid extender storage time membrane integrity
2015/6/8
The objective of this study was to assess the sperm membrane integrity in extended boar semen during storage time using specific spectrum laboratory methods. Boar semen was diluted with the long-term ...
The long-term administration of a clinoptilolite-supplemented feed to layers and its effect on performance, haematological parameters and metabolic profile
ZeoFeed layers performance blood tests
2015/6/5
120 selected layers (Bovans Goldline hybrid) aged 19 weeks with an average weight of 1 735 g were divided into two balanced groups: control group (Group C) and experimental (Group E). Layers were rear...
Changes in egg quality traits associated with long-term selection for lower yolk cholesterol content in Japanese quail
selection yolk cholesterol egg quality traits correlations Japanese quail
2015/6/5
In the present paper we describe the basic results of long-term selection for low yolk cholesterol content in Japanese quail and its influence on development and relationship with other egg quality tr...