筛选
科学数据
统计数据
共检索到386条 ,权限内显示50条;
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.184.8
- 摘要：
- using crop area and yield data from the US National Agricultural Statistics Service (NASS). Total NPP, including estimates of both above
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.184.1
- 摘要：
- using crop area and yield data from the US National Agricultural Statistics Service (NASS). Total NPP, including estimates of both above
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.184.6
- 摘要：
- using crop area and yield data from the US National Agricultural Statistics Service (NASS). Total NPP, including estimates of both above
NPP Cropland: Gridded Estimates for the Central U.S.A., 1982-1996
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.184.7
- 摘要：
- using crop area and yield data from the US National Agricultural Statistics Service (NASS). Total NPP, including estimates of both above
Mauritius Hemp [Furcraea Foetida] field, Malawi, ca.1911
- 负责人：
- 关键词：
- agriculture farming Croplands
- DOI：
- doi:10.25549/impa-c123-79835
- 摘要：
- een Aloe or Giant Cabuya. It is grown to produce a natural fibre used in ropes and twine. The crop is precisely sown in straight furrows. There ar
Data from: The influence of crop tiller density on the breeding performance of a cereal-nesting specialist
- 负责人：
- Setchfield, Rosemary
- 关键词：
- corn bunting breeding performance farmland bird cereal crop crop management nest site selection nest survival ecological trap edge effect intensive agriculture
- DOI：
- doi:10.5061/dryad.g4t3s
- 摘要：
- of agricultural intensification. Understanding the mechanisms that link crop sward structure to demographic fitness and population change may be important for developing effective
Data from: Sorghum and groundnut sole and intercrop nutrient response in semi-arid West Africa
- 负责人：
- Charles Wortmann
- 关键词：
- Sahel asymptotic response functions curvilinear to plateau economically optimal rate net return to fertilizer intercrop
- DOI：
- doi:10.5061/dryad.5v3b8gh
- 摘要：
- x Niger on-station trials included treatments for determination of intercrop effects on sorghum yield and response. Mean grain and fodder yield incr
Khalil:CH4 and N2O Emissions From Sub-tropical Rice Agriculture In China
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.883.2
- 摘要：
- ng the growing seasons. These factors tend to reduce methane emissions. But the rice straw and crop residues from the first crop of the year are plowed into the fields
Khalil:CH4 and N2O Emissions From Sub-tropical Rice Agriculture In China
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.883.1
- 摘要：
- ng the growing seasons. These factors tend to reduce methane emissions. But the rice straw and crop residues from the first crop of the year are plowed into the fields
Khalil:CH4 and N2O Emissions From Sub-tropical Rice Agriculture In China
- 负责人：
- DOI：
- doi:10.5063/aa/nceas.883.4
- 摘要：
- ng the growing seasons. These factors tend to reduce methane emissions. But the rice straw and crop residues from the first crop of the year are plowed into the fields
