CAJ | 학술논문

采用田间试验，利用玉米秸秆深层还田技术对0～40 cm土层土壤肥力和玉米产量的影响进行了研究。结果表明，玉米秸秆深层还田不仅能改善土壤理化性质，培肥土壤，还能增加玉米产量。秸秆深层还田3年后0～20 cm土层有机质含量提高了1．8％～8．38％，速效氮含量提高了5．47％～14．66％，速效磷含量提高1．33％～1．42％，速效钾含量提高了1．77％～5．31％，容重降低了0．75％～4．51％；20～40 cm土层有机质含量提高了11．94％～46．27％，速效氮含量提高了6．15％～30．82％，速效磷含量提高1．74％～2．98％，速效钾含量提高了4．3％～13．98％，容重降低了5．52％～13．79％；深层秸秆还田后玉米增产量有明显的增加趋势，增产量在4．7％～8．5％之间。
채용전간시험，이용옥미갈간심층환전기술대0～40 cm토층토양비력화옥미산량적영향진행료연구。결과표명，옥미갈간심층환전불부능개선토양이화성질，배비토양，환능증가옥미산량。갈간심층환전3년후0～20 cm토층유궤질함량제고료1．8％～8．38％，속효담함량제고료5．47％～14．66％，속효린함량제고1．33％～1．42％，속효갑함량제고료1．77％～5．31％，용중강저료0．75％～4．51％；20～40 cm토층유궤질함량제고료11．94％～46．27％，속효담함량제고료6．15％～30．82％，속효린함량제고1．74％～2．98％，속효갑함량제고료4．3％～13．98％，용중강저료5．52％～13．79％；심층갈간환전후옥미증산량유명현적증가추세，증산량재4．7％～8．5％지간。
A field trial was carried out to study the effects of deep maize straw returning on 0~40 cm layer soil fer-tility and maize yields .Results show that deep maize straw returning can not only improve the physic-chemical properties of soil but also improve maize yield .After deep maize straw returning for three years,organic matter content in soils of 0~20 cm has increased by 1 .8%~8 .38%,The content of available nitrogen,phosphorus,and potassium increased by 5 .47%~14.66%,1 .33%~1 .42%,and 1 .77%~5 .31%,respectively.By contrast,soil bulk density decreased by 0 .75%~4 .5 1%.In addition,these parameters showed similar trand of the soils of 20~40 cm .There was a consid-erable increase in the maize yields after deep maize straw returning,increased by 4 .7%~8 .5%.