CAJ | 학술논문

[研究目的]通过对保护性耕作下土壤风蚀影响与控制的研究,旨在为指导京郊裸露农田治理和结构调整,生态补贴的实施提供理论依据.[方法]2008年4月采用移动式风洞仪进行研究,并得出以下初步结论:[结果](1)六种地块下土壤风蚀量以裸露翻旋地最高,种植越冬覆盖作物能显著降低土壤风蚀量;不同免耕播种机和秸秆处理方式下,风蚀量区别主要在于播种机,以迪尔风蚀量最低,农哈哈机型最高;四种耕作方式下土壤风蚀量以旋耕地最高,翻耕地比旋耕地降低80.81%,重耙和免耕地风蚀量分别比旋耕地降低95.35%和97.71%;冬小麦五种不同播期下土壤风蚀量随着播期的推后逐渐增大.(2)四种作物中小麦田的覆盖率最高,其次为紫花苜蓿和小黑麦,油菜覆盖率最低;四种耕作方式下耙耕小麦田覆盖率最高为84.00%,旋耕最低为55.33%;五个播期下9月27日播种的小麦田覆盖率显著高于其他播期,10月7日和10月12日最低.(3)将土壤风蚀量作为依变量,覆盖率、作物株高和土壤容重作为自变量进行多元回归分析,并建立多元回归方程:Y=173.186-0.449X1-0.485X2-72.699X3.
[연구목적]통과대보호성경작하토양풍식영향여공제적연구,지재위지도경교라로농전치리화결구조정,생태보첩적실시제공이론의거.[방법]2008년4월채용이동식풍동의진행연구,병득출이하초보결론:[결과](1)륙충지괴하토양풍식량이라로번선지최고,충식월동복개작물능현저강저토양풍식량;불동면경파충궤화갈간처리방식하,풍식량구별주요재우파충궤,이적이풍식량최저,농합합궤형최고;사충경작방식하토양풍식량이선경지최고,번경지비선경지강저80.81%,중파화면경지풍식량분별비선경지강저95.35%화97.71%;동소맥오충불동파기하토양풍식량수착파기적추후축점증대.(2)사충작물중소맥전적복개솔최고,기차위자화목숙화소흑맥,유채복개솔최저;사충경작방식하파경소맥전복개솔최고위84.00%,선경최저위55.33%;오개파기하9월27일파충적소맥전복개솔현저고우기타파기,10월7일화10월12일최저.(3)장토양풍식량작위의변량,복개솔、작물주고화토양용중작위자변량진행다원회귀분석,병건립다원회귀방정:Y=173.186-0.449X1-0.485X2-72.699X3.
In this paper, we studied farmland soil wind erosion and its impact factors in Beijing city under con-servation tillage in use of Movable Erosion Wind Tunnel. The results show that (1) the volume of soil wind ero-sion in rotary exposed farmland shows the highest spin in Six plots, cover crops planted in winter can signifi-cantly reduce the volume of soil erosion; In different no-tillage methods and straw treatment, the amount of wind erosion depends on seeding-machine, and the volume of Deere comes up to minimum, agricultural haha maximum; Volume of soil erosion in rotary reach the highest spin in four farming methods, plough tillage less 80.81% than rotary, and harrow tillage less 97.71%,no tillage less 95.35%; With the delay of sowing dates, the amount of soil erosion in winter wheat increases. (2) The coverage of wheat field attain to the highest, followed by alfalfa and triticale, and rape the minimum eoverage; In four tillage fields of wheat, harrow-tillage coverage comes up to the highest 84.00%, and rotary to the lowest 55.33%; Wheat field coverage planted on September 27 was significantly higher than other sowing date, October 7 and October 12 the lowest. (3) Take the volume of soil erosion as dependent variable, and coverage, crop height and soil bulk density as independent variables for multiple regression analysis, then set up multiple regression equation: Y=173.186-0.449X1-0.485X2-72.699X2.