保护性耕作条件下深松技术研究  

Study on Subsoiling Technique for Conservation Tillage Field

作　　者：李洪文[1] 陈君达[1] 李问盈[1] 

机构地区：[1]中国农业大学机械工程学院，北京 100083

出　　处：《农业机械学报》2000年第6期42-45,共4页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：根据保护性耕作的地表状况和对深松作业的要求 ,对比单柱凿铲式和可调翼铲式深松机的工作性能 ,并在玉米和小麦地进行了 7年的田间试验。结果表明 :可调翼铲式深松机在间隔深松底层土壤的同时 ,能够全面疏松表层土壤 ,而且不需使用大功率拖拉机。对于旱地小麦 ,利用可调翼铲式深松机深松后 ,可以增加播种前土壤含水量 ,改善播种质量 ,提高作物产量 ;对于旱地玉米 。The working performances of a tine and a subsoiler with adjustable wings were compared based on the soil surface condition of conservation tillage and the requirement of subsoiling. The subsoiling experiments on fields of wheat and corn were carried out for seven years. The results showed that a subsoiler with adjustable wings could loose the deep soil with dead interval and loose the surface soil completely. For dryland wheat, subsoiling operation could increase pre planting soil moisture, improve sowing quality and the yield could be increased by 10% compared with conventional tillage. For corn, after subsoiling soil moisture was higher than conventional tillage, but lower than no tillage due to a following dry winter and the yield was similar.

关 键 词：保护性耕作 深松 旱地 

分 类 号：S345[农业科学—作物栽培与耕作技术] S341.1[农业科学—农艺学]