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为了提高延安 市旱地小麦降水有 效利用率， 进而达到 高产、稳产的 目的，采用 冬小麦全 生育期地膜覆盖穴播栽培技 术进行了试验研究。结果表明，覆膜穴播比同期露播增产 ３０．５％ ，比常 规露播增产 ２０．５％ ，说明地膜小 麦具有保水、抗旱、增产的全程优势作用。因此，旱地小麦覆膜穴播栽培 技术在该市干旱半干旱农业生态区有较高 的推广应用价值。
In order to improve the effective utilization rate of wheat precipitation in dryland in Yan'an, and to achieve the purpose of high yield and stable yield, the experiment was carried out using the film-mulched-hole cultivation technology during the whole growth period of winter wheat. The results showed that the film mulching of mulched film increased 30.5% compared with that of the same period and increased 20.5% compared with that of conventional mulching. This indicated that mulching film had the full advantage of water retention, drought resistance and yield increase. Therefore, the dry-land wheat film-mulching cultivation technology in the city's arid and semi-arid agro-ecological zones have a higher value of popularization and application.