旱作农田保护性耕作-液膜-施肥综合技术研究

    Integrated management of conservation tillage, emulsified bituminous mulch and fertilization in dryland farming

    • 摘要: 在山西寿阳地区旱作春玉米保护性耕作试验基础上,增加液态地膜覆盖处理和肥料用量处理,研究不同耕作-液膜-施肥配合措施对土壤温度、土壤水分利用、作物苗生长和产量的影响。结果表明:与传统耕作比较,采用液态地膜覆盖后,免耕土壤苗期地表温度提高0.5~2℃,春玉米出苗数提高18%以上;玉米增产约5%;0~200 cm土壤水分增加21 mm;ET增加12 mm,为改善旱作保护性耕作-液膜-施肥管理综合技术效果提供依据。

       

      Abstract: Field experiments on surface soil mulch with emulsified bituminous materials and fertilizer management based on conservation tillage practices for spring corn were conducted in dryland farmland of Shouyang in Shanxi Province, to determine the impacts of tillage, surface mulch with emulsified bituminous materials and fertilizer rate on soil temperature, soil water, and crop seedling emergence and yields, and to evaluate the integrated management of conservation tillage, emulsified bituminous mulch and fertilization in dryland farming for promoting agricultural production. Compared with conventional tillage methods, using emulsified bituminous mulch under no-tillage soils caused the increases of 0.5~2℃ for surface temperature during the seedling stage, above 18% for the number of corn seedling emergence, about 5% for corn yields, 21 mm for the 0~200 cm soil moisture contents, and 12 mm for water use during the growing season. The study provides information for improving tillage-mulching-fertilization management of dryland farming.

       

    /

    返回文章
    返回