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1.小棚加地膜、小棚、地膜等几种保护栽培均有良好的改善土壤温度状况的效果,其中以地膜加小棚的为最好,其次为地膜区(改良地面区好于一般地膜区),小棚区占第3位,另外,小棚区的土壤湿度比小棚加地膜区湿度大。由于复盖提高地温,要早拟膜,在不受霜冻的前提下,适当早定植,采用早熟品种,才能收到更好的效果。2.小棚加地膜弥补了地膜只增加地温而不增加近地气温的弱点,小棚只增加气温,很少增加地温以及不能控制小棚内的湿度等缺点,因此,有利于瓜类、茄果类的生长发育。使各种蔬
1. Shed plus plastic film, canopy, mulch and other protective cultivation have a good effect of improving the soil temperature conditions, of which the best film and shed, followed by the film area (improved surface area is better than the general film Area), small shed area accounted for No. 3, in addition, the small shed area of the soil moisture than the shed and the plastic film area humidity. As the cover to improve the temperature, to film early, without the premise of frost, appropriate early planting, the use of precocious varieties, in order to receive better results. 2. Shed plus plastic film to make up for the ground film only increase the ground temperature without increasing the temperature near the weakness, the small shed only increase the temperature, rarely increase the ground temperature and can not control the humidity within the shed and other shortcomings, it is conducive to melons, eggplant Fruit growth and development. Make all kinds of vegetables