为探讨陇东旱塬不同覆盖方式的土壤温度效应，通过田间试验，研究了秸秆带状覆盖、地膜覆盖和露地种植对土壤温度及春玉米籽粒产量的影响。结果表明，与对照露地平作相比，地膜覆盖处理在玉米各生育时期均表现为增温效应，秸秆带状覆盖处理在玉米各生育时期均表现为降温效应。地膜覆盖处理和秸秆带状覆盖处理均可显著提高春玉米产量，增产幅度分别为25.5%和13.3%。

In order to explore the effects of different mulching models on soil temperatures and yield increasing， the effects of three different mulching methods on soil temperatures and grain yield of spring corn， which included bundled straw mulching treatment，plastic film mulching treatment and non-mulching as control， were studied through field experiment. The results show that compared with the control， plastic mulching treatment created a warming effect during the whole growing season of corn， and bundled straw mulching treatment created a cooling effect during the whole growing season of corn. The plastic film mulching treatment and bundled straw mulching treatment can significantly increase the yield of spring corn， to an extent of 25.5% and 13.3%， respectively.

S513

甘肃省农业科技创新项目(GNCX-2013-23)。