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对农作物因地制宜实行地膜覆盖栽培,确有不同程度的保温保水,改善土壤养分状况、抑制杂草生长、减轻病虫害、防涝等效果,但地膜价格高昂,目前每吨价格已达万元左右。为帮助农民在购买地膜时,尽量减少浪费,做到按实际需要购买,笔者在基层从事数年地膜甘蔗间种西瓜的试验,示范工作中,摸索出一个地膜实际购买量简易算法,可供参考。即: 地膜购头量(公斤)=农田面积(平方米)×计划覆盖度×地膜系数上式中,计划覆盖度指需盖膜的面积占农田面积的比例;地
For crop cultivation of plastic film according to local conditions, there are different degrees of thermal insulation, improve soil nutrient status, inhibit weed growth, reduce pests and diseases, waterlogging and other effects, but the high price of plastic film, the current price has reached 10,000 yuan per ton. To help farmers in the purchase of plastic film, to minimize waste, according to the actual needs of the purchase, the author engaged in the grass-roots for a few years to test the watermelon between sugar cane varieties, to work out a sample to explore the actual purchase of a simple film algorithm for reference . Namely: the amount of plastic film to buy (kg) = Farmland area (square meters) × plan coverage × Film Coefficient In the above formula, the planned coverage refers to the area covered by film needs of the proportion of farmland area;