机械作业下土壤理化性质和生态因子的变化  

Changes of soil physical,chemical and ecological factors under mechanized cultivation.

作　　者：夏萍[1] 任丽 

机构地区：[1]安徽农业大学农业工程系,合肥230036 [2]安徽省霍邱县农机学校,霍邱237400

出　　处：《应用生态学报》2002年第3期319-322,共4页Chinese Journal of Applied Ecology

基　　金：安徽省农业综合开发项目 (96 0 0 5 )

摘　　要：通过 3年对黄淮海农业机械化推广的研究 ,探讨了机械综合作业对旱作农业的影响 .结果表明 ,机械化秸秆还田、化肥深施、土壤深松和免耕覆盖等综合技术的合理配套实施 ,可以改善土壤理化性状 ,具有明显的生物学效应 .与传统作业相比 ,机械综合作业使土壤容重减少 0 .0 8g·cm-3 ,有机质含量增加12 % ,水分利用率提高 10 .1%～ 13.6 % ,小麦玉米产量增加 12 18kg·hm-2 .Three years agricultural mechanization extension project in Huang Huai Hai regions showed that the application of comprehensive agricultural technologies which included the return of straw and stalk to field by mechanization,deep application of fertilizer, deep plough and soil no tillage with mulch,had an obvious biological effects.In comparing with traditional cultivation,the comprehensive mechanized cultivation could decrease soil bulk density by 0.08 g·cm -3 ,increase soil organic mater by 12%,improve moisture utilization by 10.1～13.6%,and increase the grain yields of wheat and corn by 1218 kg·hm -2 .

关 键 词：机械作业 土壤 生态因子 生物效应 理化因子 

分 类 号：S154.4[农业科学—土壤学]