筛选
科学数据
统计数据
共检索到67条 ,权限内显示50条;
Landwirte in der Eifel (2016);;Farmers in the Eifel Region (2016)
- 负责人：
- University Of Trier
- 关键词：
- KAT36 Branches of Economy, Services and Transport KAT37 Work and Industry KAT38 Occupation, Profession KAT53 Family Arbeitsbedingungen Berufst?tigkeit Familie und Ehe Agrarwirtschaft Working conditions Employment
- DOI：
- doi:10.4232/1.13354
- 摘要：
- with a view to preparation in various areas (e.g. arable farming, livestock farming, marketing of agricultural products, etc.).); weekly working time (hours pe
Agricultural production in Germany, 1800 to 1950.
- 负责人：
- DOI：
- doi:10.4232/1.8310
- 摘要：
- roduction of livestock breeding 1800-1950 C. total agricultural production C.1 Farmland-Production C.1.1 Consumption of forage 1800-1950 C.1.2 Use of crop-land products in Germ
Fornbyli Landscape and Archaeological Survey on Hegranes (FLASH) Interim Report 2016, Iceland
- 负责人：
- 关键词：
- archaeology
- DOI：
- doi:10.18739/a2xk84r0z
- 摘要：
- 18th century, many of the sites were rebuilt as farm infrastructure for livestock management, only to be finally abandoned and fall to ruin
Data from: Influence of genetic drift on patterns of genetic variation: the footprint of aquaculture practices in Sparus aurata (Teleostei: Sparidae)
- 负责人：
- DOI：
- doi:10.5061/dryad.dm97908
- 摘要：
- g-history of gilthead sea bream farming. We focused our attention on the role that genetic drift may play in shaping these patterns. Results based
Data from: Mixed-ancestry and admixture in Kaua’i’s feral chickens: invasion of domestic genes into ancient Red Junglefowl reservoirs?
- 负责人：
- DOI：
- doi:10.5061/dryad.55h83
- 摘要：
- A major goal of invasion genetics is to determine how establishment histories shape non-native organisms' genotypes and phenotypes
Source apportionment of nutrient contributions to rivers in England and Wales modelled with SAGIS
- 负责人：
- Daldorph, Peter;;UK Water Industry Research;;Environmental Information Data Centre
- 关键词：
- Pollution
- DOI：
- doi:10.5285/8c5d9e38-0244-4a39-8600-a85513a6fecf
- 摘要：
- lude livestock farming, arable farming, highways, urban runoff, background (from soils), onsite wastewater treatment systems and atmospheric deposition. Point sources inc
Tsafack S, Degrande A, Franzel S, Simpson B. 2014. Farmer-to-farmer extension in Cameroon: a survey of extension organizations. ICRAF Working Paper
- 负责人：
- Sygnola, Tsafack;;Degrande, Ann;;World Agroforestry Centre
- 关键词：
- DOI：
- doi:10.7910/dvn/vqxgpv
- 摘要：
- ng livestock or seedlings. Among the main motivations for one to become a lead farmer mentioned by respondents were altruism and early access to technologies
Nitrogen availability determines the long-term impact of land-use change on soil carbon stocks in Ghana
- 负责人：
- DOI：
- doi:10.6084/m9.figshare.12016158.v1
- 摘要：
- systems. Such long-term evaluations, particularly regarding low-input livestock systems, are limited. The location of the current study, which is a resear
Nitrogen availability determines the long-term impact of land-use change on soil carbon stocks in Ghana
- 负责人：
- DOI：
- doi:10.6084/m9.figshare.12016158
- 摘要：
- systems. Such long-term evaluations, particularly regarding low-input livestock systems, are limited. The location of the current study, which is a resear
Tsafack S, Degrande A, Franzel S, Simpson B. 2014. Farmer-to-farmer extension in Cameroon: a survey of extension organizations. ICRAF Working Paper
- 负责人：
- 关键词：
- DOI：
- doi:10.34725/dvn/vqxgpv
- 摘要：
- ng training workshops and meetings, and helping them set up income-generating opportunities such as selling livestock or seedlings. Among the main motivations
