农学 >>> 农学总论 作物学 园艺学 土壤学 植物保护学 农药学 林学 畜牧学 兽医学 水产学
搜索结果: 1-15 共查到农学 Opportunities相关记录21条 . 查询时间(0.109 秒)
Woody plant species represent an invaluable reserve of biochemical diversity to which metabolic engineering can be applied to satisfy the need for commodity and specialty chemicals, pharmaceuticals, a...
The genome editing has revolutionized the agriculture and human therapeutic sectors by its ability to create precise, stable and predictable mutations in the genome. It depends upon targeted double-st...
该研究发现棉花种植环节的环境影响取决于灌溉、农药和化肥用量。全球约有一半的棉田使用地下水灌溉,农药平均施用量为 1.57 kg/ha,氮磷肥平均投入量为150 kg/ha。全球各棉区灌溉、农药、氮肥施用量差异较大,经济发展水平高的地区施用量较高,而经济水平和水资源有限的棉区施用量较少,亟需因地制宜提高灌溉用水、化肥、农药利用效率,减少生产环节的环境影响。研究还发现,除了棉花种植环节对环境的影响外,...
Current and planned space missions will produce aboveground biomass density data products at varying spatial resolution. Calibration and validation of these data products is critically dependent on th...
Acid soils restrict plant production around the world. One of the major limitations to plant growth on acid soils is the prevalence of soluble aluminium (Al3+) ions which can inhibit root growth at mi...
Over half of the forestland in the United States is in private hands. Just over 10 million individual and family owners control about 60% of this private forestland. Ownership of family forests change...
‘Mainstreaming Pro-poor Livelihood Opportunities with Bamboo’ documents some of the achievements of INBAR’s Livelihood and Economic Development Programme (LEDP) in developing rural livelihood options ...
Almost half of New Zealand’s greenhouse gas emissions arise from agriculture and enteric methane (CH4) emissions arising from ruminant animals constitute 30% of total CO2-e emissions. Enteric CH4 emis...
Nigeria agriculture is characterized by small holdings, low capitalization and low yield per unit of land. Cereal crops are the major dietary energy supplier all over the world and particularly in Nig...
Understanding the major limitations to root growth is very important if we are to maximize water and nutrient use and increase yields. Limitations may be insufficient rooting depth, root diseases, nut...
This study examines how the performance of the maize seed system in Ethiopia affects small-scale farmers’ access to and use of improved maize varieties. Particular emphasis is given to the drought-p...
Cattle production is the most important livestock sub-sector in South Africa. It contributes about 25 - 30% to the total agricultural output per annum. However, cattle productivity is declining due to...
Widespread and increasing rural poverty in sub-Saharan Africa has been of great concern to development community. Low use of inputs by farmers, due to market constraints that reduce profitability of...
The aim of this study is to see whether Mushroom compost waste (MCW) can be used as an alternative fertilizers to Farm yard manure (FYM) because the latter is very expensive in Strawberry growing. Exp...
Holders of small forest tenures are largely “market loggers,” selling undifferentiated raw logs into fluctuating local and regional markets at low margins. However, these tenure holders have potentia...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...