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在宁南半干旱偏旱区作物生长期降水仅４５．５ｍｍ的严重干旱年，旱地春小麦地膜覆盖穴播试验获得了理想的结果。试验结果表明：秋覆膜处理平均单产３１３０ｋｇ／ｈｍ２，水分利用率１４．１５ｋｇ／（ｍｍ·ｈｍ２）分别比对照高１０６３．３ｋｇ／ｈｍ２和５．０７２ｋｇ／（ｍｍ·ｈｍ２），增幅达５１．６％和５５．９％，扣除地膜成本后净增收５４３．６６元／ｈｍ２。上述单产水平和增产幅度在当地旱地春小麦生产中是罕见的。春覆膜处理平均单产２８００ｋｇ／ｈｍ２，水分利用率１１．４０２ｋｇ／（ｍｍ·ｈｍ２），分别比对照高７３３．３ｋｇ／ｈｍ２和２．３２１ｋｇ／（ｍｍ·ｈｍ２），增幅为３５．５％和２５．６％，扣除地膜成本后净收入反比对照低７５．００元／ｈｍ２。秋覆膜处理在增产增收、节水保墒、提高水分利用率等方面明显优于春覆膜处理。因此，旱地春小麦秋覆膜穴播栽培技术在半干旱地区有较高的推广价值。
In severe drought year of 45.5 mm in crop growth period in semi-arid and semi-arid area of southern Ningxia, the result of plastic film-mulched-hole sowing experiment in dry land was satisfactory. The results showed that the average yield of 3130kg / hm2 and the water use efficiency of 14.15kg / (mm · hm2) were 1063.3kg / hm2 and 5.072kg / (mm · hm2) higher than the control respectively, an increase of 51%. 6% and 55.9% respectively, after deducting the net cost of plastic film, increased by 543.66 yuan / hm2. The above mentioned yields and yields are rare in dryland spring wheat production. The average yield of spring lamina was 2800kg / hm2 and the water use efficiency was 11.402kg / (mm · hm2), which was 733.3kg / hm2 and 2.321kg / (mm · hm2) higher than the control respectively, an increase of 35.5% and 25.6%, net income after deducting the cost of plastic film low 75.00 yuan / hm2. Autumn mulching treatment was significantly better than spring mulching treatment in terms of increasing production and income, saving water and preserving soil moisture, and improving water use efficiency. Therefore, dry-land spring wheat film-mulching cultivation techniques in semi-arid areas have a higher promotional value.