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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，...
Genetic Opportunities to Improve Cereal Root Systems for Dryland Agriculture
Breeding Root growth Root health Root physiology Water uptake Wheat
2009/7/21
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...
The maize seed system in Ethiopia：Challenges and opportunities in drought prone areas
Maize seed systems drought-prone agro-ecologies Ethiopia
2009/3/4
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...
Evaluating the Constraints and Opportunities for Sustainable Rice Production in Cameroon
Rice production Cameroon consumption imports constraints opportunities Challenges
2010/11/11
In Cameroon, economic factors have driven more and more people into the agricultural sector.
Today food production constitutes an important component in the livelihood strategies of many farmers. Giv...
Characterising strengths, weaknesses, opportunities and threats in producing naked oat as a novel crop for northern growing conditio
breeding cultivation feeds food grain harvesting oats quality storage yields
2010/8/12
Naked oat (Avena sativa ssp. nuda L.) is the highest quality small-grain cereal that can be grown at the northernmost margin of cereal production. It remains an under-utilised crop and it contributes ...