【摘要】 采用盆栽试验方法 ,研究了半腐熟的小麦秸秆和城市生活垃圾、地膜、高粱秆席片、纸板等覆盖材料对玉米幼苗生长以及土壤有机质和速效氮、磷、钾含量分布的影响。结果表明 :秸秆、地膜和席片覆盖显著地增加了玉米株高、地上部植株干重、根系干重和叶片数 ,促进了玉米幼苗的生长发育 ,而纸板和垃圾的作用不显著 ;与其它覆盖材料和对照相比较 ,秸秆和垃圾覆盖材料明显地提高了上 (0～ 7cm)、中 (7～ 14 cm)、下 (14～ 2 1cm) 3层土壤中的有机质和速效氮、速效钾的含量 ,而速效磷的增加上层土壤 (0～ 7cm )大于中层土壤 (7～ 14 cm ) ,下层土壤(14～ 2 1cm)没有增加。更多还原

【Abstract】 In this pot experiment, the effects of half decomposed wheat straw and municipal garbage, plastic film, sorghum straw mat, and cardboard as mulching materials on corn seedling growth and soil nutrientsdistributions were studied. The results showed that wheat straw, plastic film, and sorghum straw mat as mulching materials significantly increased the height of corn plant, dry weights of corn plant and root, and corn leaf number, but cardboard and garbage as mulching materials didnt do so. Comparing with the other mulching materials and control, wheat straw and garbage as mulching materials significantly increased soil organic matter, available N, and available K in all three soil layers (0～7 cm, 7～14 cm, 14～21 cm), but they increased soil available P mainly in upper layer (0～7 cm).更多还原