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实践证明,西瓜利用塑料棚和地膜栽培技术能提早成熟半个月左右,且有提高产量的作用。但是地膜栽培不能防霜,播期和露地播种一样不能提前;利用拱棚栽培播期虽可提前,但是成本较高,能否利用地膜在晚霜前当作小拱棚用,在晚霜过后再当作地膜用?在节约成本的前提下,把西瓜的成熟期比地膜西瓜再提前一步,从而达到提高经济效益的目的。我们带着这个问题在西瓜栽培上作了初步试验。
Practice has proved that watermelon use of plastic shed and plastic film cultivation techniques can be premature for about half a month, and to increase the role of yield. However, the cultivation of plastic film can not be frost, sowing and open field planting can not be ahead of schedule; Sowing cultivation sowing period can be advanced, but the cost is high, can use the plastic film as a small arch shed before the night frost, Use? In the premise of cost savings, the maturity of watermelon than the watermelon one step ahead, so as to achieve the purpose of improving economic efficiency. We took this issue in the watermelon cultivation made a preliminary test.