玉米保护性耕作措施水温效应及其产量效果分析  

Analysis of Conservation Tillage Measures of Temperature Effects and Its Yield on Corn

作　　者：李成军[1] 吴宏亮[1] 康建宏[1] 许强[1] 

机构地区：[1]宁夏大学农学院,银川750021

出　　处：《玉米科学》2010年第3期129-133,139,共6页Journal of Maize Sciences

基　　金：国家科技支撑计划课题"农牧交错风沙区保护性耕作技术集成研究与示范"(2006BAD15B05)

摘　　要：针对宁夏中部干旱带水资源贫乏、干旱频繁发生、土壤风蚀严重的特点,采取地膜覆盖、秸秆覆盖、起垄、免耕等不同保护性耕作措施结合方式,与传统耕作的玉米进行对比试验。结果表明,整个生育期垄膜集水处理具有明显的保水效果,随着中后期降雨的增多,集雨效果更加明显;传统耕作+地膜覆盖和免耕+地膜覆盖处理玉米生长前期含水量最高,到抽穗期以后土壤含水量逐渐下降;秸秆覆盖各处理均有保水作用,整个生育期种植行间各层(5～25cm)平均地温的变化在苗期表现明显,传统耕作+地膜覆盖、免耕+地膜覆盖和起垄+地膜覆盖处理均提高地温,分别提高2.6℃、2.0℃和1℃,其他保护性耕作地温均低于传统耕作,免耕+秸秆覆盖温度最低,比传统耕作低2.1℃;穗期以后,各处理温差逐渐降低。垄膜集水措施和传统耕作+秸秆覆盖处理表现出增产,平均产量分别为17330.4kg/hm2和1109.52kg/hm2,较对照分别提高14%和11%。其他处理均表现出减产。In the Mid-region of Ningxia scarce water resources, droughts occur frequently, and soil wind erosion is seriously. Take the plastic film mulch, strawmulch, ridge, notillage and other conservation tillage methods to combine the measures with the traditional farming of maize compared. The results showed that throughout the growth period, Lung membrane set treatment had obvious effects of water, with an increase in the mid-and late rainfall, rainwater harvesting more pronounced effect. Traditional farming + p...

关 键 词：玉米 保护性耕作 水温效应 产量 

分 类 号：S51[农业科学—作物学]