CAJ | 학술논문

设计实施了黄土高原西部旱农区马铃薯传统耕作和5种免耕覆盖耕作措施的大田对比试验,对不同耕作措施下的马铃薯产量、水分利用效率、各层次土壤水分、有机质含量以及养分含量进行了研究.结果表明:免耕秸秆覆盖除垄上秸秆覆盖摆种外,其它各处理的产量和水分利用效率较传统耕作都有不同程度的提高;免耕秸秆覆盖能明显改善0～80 cm的土壤贮水量,尤其是0～30 cm的土壤贮水量;免耕秸秆覆盖可以提高0～30 cm土壤层的有机质,但是对养分总量平衡的影响不大.
설계실시료황토고원서부한농구마령서전통경작화5충면경복개경작조시적대전대비시험,대불동경작조시하적마령서산량、수분이용효솔、각층차토양수분、유궤질함량이급양분함량진행료연구.결과표명:면경갈간복개제롱상갈간복개파충외,기타각처리적산량화수분이용효솔교전통경작도유불동정도적제고;면경갈간복개능명현개선0～80 cm적토양저수량,우기시0～30 cm적토양저수량;면경갈간복개가이제고0～30 cm토양층적유궤질,단시대양분총량평형적영향불대.
The field test was conducted in the western Loess Plateau, the treatments including conventional tillage(T), surface seeding in the stubble mulched ditch with plastic film mulched ridge (PDSS), shallow seeding in the stubble mulched ditch with plastic film mulched ridge(PDSSH), surface seeding on ridge with stubble(RSS), surface seeding in flatten culture with stubble (FSS) and surface seeding in the stubble mulched ditch without plastic film mulched ridge(DSS). The yield. water use efficiency (WUE), soil water in each layer, organic matter content and nutrient of each treatment were studied. The results showed that except RSS in no-tillage with straw cover treatments, both yield and water use efficiency of each treatment increased in different degree when compared with T;the treatment of no-tillage with straw cover could improve water storage of 0～80 cm soil significantly,especially 0～30 cm soil; and this treatment also could increase organic matter in 0～30cm soil layer, but had little effect on total nutrient balance.