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为了提高半干旱区玉米产量,以玉米品种先玉335为试验材料,采用大区对比的方法,对平作膜上精播技术进行研究。结果表明:平作膜上精播处理比常规垄作处理地温提高2~3℃,储水量增加13.13%,产量增加13.87%,水分利用率增加20.40%。平作膜上精播技术能够提高耕层土壤温度,与常规垄作覆膜相比具有良好的集雨保墒效果,能促进玉米生长发育,显著提高玉米产量和水分利用率。
In order to improve the yield of maize in semi-arid area, the maize cultivar Xiangyu 335 was used as the experimental material. The results showed that the precision sowing treatment improved the ground temperature by 2-3 ℃, the water storage capacity increased by 13.13%, the yield increased by 13.87% and the water use efficiency increased by 20.40% compared with the conventional ridge treatment. Compared with the conventional ridge film mulching, the precision sowing technique can improve the temperature of topsoil, has a good effect of collecting rain and preserving soil moisture, can promote the growth and development of maize and significantly increase the corn yield and water use efficiency.