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1 选地不当 底肥不足 地膜小麦是高产栽培技术,应选择肥力中上等、有灌溉条件的地块,而敦煌市部分农户由于对土地选择认识不清,将地膜小麦种在边缘三类地或漏沙地上,这类地由于土壤瘠薄,肥力不足,保肥保水能力差而不利于地膜小麦生长,加上农家肥数量不足,未能将地膜小麦
An inappropriate selection of low basement film Wheat is a high-yielding cultivation techniques, should choose the fertility of the upper, irrigation conditions of the plots, and some farmers in Dunhuang City, due to lack of understanding of land selection, the plastic film wheat in the edge of three kinds of land or Lost sand, such places due to soil infertility, lack of fertility, poor retention of water retention is not conducive to the growth of plastic film wheat, coupled with insufficient quantity of farmyard manure, failed to mulch wheat