山区旱地间套种春玉米的覆盖效果研究

3年定位试验结果表明,栏肥、秸秆、地膜和杂草覆盖对山区旱地间套种春玉米具有显著的增产增效作用,增产幅度18.1%～36.4%,其中以秸秆覆盖最为明显,且以前作秸秆全部覆盖最好.栏肥、秸秆和杂草覆盖保水效果好,具增降温的双重功效,并能明显提高土壤肥力,而地膜覆盖保水抗旱效果差,又耗地力,不利于山区旱地的可持续生产。

Study on covering effect of drought field inter-cropping spring Maize in mountain regions

The effects of mulching materials including barnyard manure , straw, weed and film on spring maize(Zea mays L. ) in triple cropping system were studied through three year-location during 1997-1999. The results indicated that all different materials mulching increased yield of spring maize significantly by 18.1 - 36.4%. It was appropiate ways to apply total late stubble straw to mulch spring maize land. Barnyard manure, straw and weed mulching could maintain good soil moisture and temperature, and increased soil fertility Obviously through three-year treatment. On the contrary, there were no such effects for film mulching.