1.生产与市场概况大棚茄子产量一般在5000千克以上,高的可超过l万千克,经济效益十分明显。北方单层大棚可提早30天上市,双层大棚可提早40天(即大棚加地膜或大棚加盖小拱棚),若三层覆盖,效果就会更好。只要利用塑料大棚,多层覆盖,效益会比单层大棚合算。根据近几年的行情来 1. Production and Market Overview Greenhouse eggplant yield generally more than 5000 kilograms, high can exceed l million kilograms, the economic benefits are obvious. Northern single-storey greenhouses can be listed 30 days earlier, double-sheltered can be 40 days earlier (that is, greenhouses plus plastic shed or shed small shed), if the three-story coverage, the effect will be better. As long as the use of plastic sheds, multi-layer coverage, cost-effective than a single greenhouses cost-effective. According to the market in recent years