A major drawback of vertical farming, however, is that the plants would require artificial light.
然而，垂直种植的一个主要缺点是，这些植物需要人工照明。
2
Emissions mostly come from vehicle exhausts, factories, artificial fertilisers and manure from intensive farming.
氮排放主要来自汽车尾气、工厂、及集约化农业中使用的化肥和粪肥。
3
Soil erosion is greatly affected by artificial interference and farming intensity. The amount of soil erosion in hillside field system increases 20 times from natural protection to crop cultivation.