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在旱地地膜覆盖栽培环境下，对冬小麦新育成品种的增产原因进行了分析。结果表明，旱地地膜覆盖小麦生态型是重穗型；产量三因素中对提高籽粒产量的作用是穗粒数＞千粒重＞穗数。提出了培育地膜覆盖小麦种质的育种目标是稳定的成穗率，多粒数，高粒重，具备根穗比值大，叶片功能期长，抗逆适应性强等性状。地膜覆盖栽培配套品种的最佳产量结构模式是穗数３６０～４０５万·ｈｍ－２，穗粒数４５～５０粒，千粒重４０～４５ｇ。
Under the condition of dry film mulching cultivation, the reason of yield increase of newly-grown winter wheat cultivars was analyzed. The results showed that the ecological type of wheat under plastic film mulching in dry land was heavy panicle type. The effect of three factors on grain yield was spikelets> 1000-grain weight> spike number. The breeding objectives of cultivating mulched wheat germplasm are stable heading percentage, multiple grain number, high grain weight, large ratio of root to spike, long functional period of leaf and strong adaptability to stress. The optimum yield structure patterns of the plastic film mulching cultivars were 360 ~ 4.0 million hm-2 spikelets, 45-50 spikelets and 40-45 g of 1000-grain weight.