CAJ | 학술논문

传统耕作对土壤耕作层多次耕翻耙耱是造成我国土地沙漠化的主要根源。为此,引进国外先进的玉米（油葵）免耕播种机,采用定点定时取样、田间调查、室内分析与统计相结合的方法,将免耕播种技术、灭茬免耕播种技术试验示范与传统耕作技术进行对比试验,结果表明：保护性耕作技术可节省机耕费225~375元/hm2,增效765~1 455元/hm2;油葵生长期间,保护性耕作技术不同土层土壤水分提高15%~25%,土壤容重提高25%~48%;油葵收获后,保护性耕作技术的土壤速效养分（氮磷钾）累积比传统耕作高。
전통경작대토양경작층다차경번파마시조성아국토지사막화적주요근원。위차,인진국외선진적옥미（유규）면경파충궤,채용정점정시취양、전간조사、실내분석여통계상결합적방법,장면경파충기술、멸치면경파충기술시험시범여전통경작기술진행대비시험,결과표명：보호성경작기술가절성궤경비225~375원/hm2,증효765~1 455원/hm2;유규생장기간,보호성경작기술불동토층토양수분제고15%~25%,토양용중제고25%~48%;유규수획후,보호성경작기술적토양속효양분（담린갑）루적비전통경작고。
Repeated tillage and harrowing and pressing of tillage soil layer under traditional farming were main cause of land desertification in China.For this reason foreign advanced maize（sunflower）no-tillage planter was introduced and a contrast experiment and demonstration was conducted between the no-tillage sowing technology,stubble ploughing no-tillage sowing technology and the traditional farming technology adopting approaches combining fixed sampling,field investigation,laboratory analysis and physical statistics.The results shows that with conservation tillage technology the tractor-ploughing fee could be saved by 225-375 yuan/hm2 and the benefit could be increased by 765-1,455 yuan/hm2,the soil moisture of different soil layer increased by 15%-25% and soil bulk density increased by 25%-48% during the growth of sunflower and soil available nutrients（nitrogen and phosphorus） accumulation after harvesting of the sunflower was higher than that of traditional farming.