CAJ | 학술논문

为探索双深松覆盖对丘陵旱区一年两熟制下小麦、玉米的增产效应，分析了双深松覆盖对丘陵旱区一年两熟制下小麦、玉米土壤水分含量、干物质积累、叶面积指数、水分利用效率和产量的影响。结果表明：双深松覆盖处理0～200 cm土层土壤含水量均高于传统耕作处理，其中在小麦生育期较传统耕作处理高7.8％～12.8％，在玉米生育期较传统耕作处理高6.8％～9.3％。双深松覆盖处理单株干物质积累量在小麦、玉米生育期内分别较传统耕作处理高22.2％～60.7％、19.6％～39.9％。双深松覆盖处理小麦、玉米生育期内叶面积指数始终大于传统耕作处理，增加幅度分别为28.4％～91.8％、6.7％～63.5％。双深松覆盖处理水分利用效率为22.8 kg/（hm2· mm），较传统耕作处理高39.9％，小麦和玉米的总产量达11989.5 kg/hm2，较传统耕作增产11.4％，差异极显著。由此可见，双深松覆盖可提高土壤含水量和水分利用效率，增加作物干物质积累量，提高叶面积指数，进而提高产量。
위탐색쌍심송복개대구릉한구일년량숙제하소맥、옥미적증산효응，분석료쌍심송복개대구릉한구일년량숙제하소맥、옥미토양수분함량、간물질적루、협면적지수、수분이용효솔화산량적영향。결과표명：쌍심송복개처리0～200 cm토층토양함수량균고우전통경작처리，기중재소맥생육기교전통경작처리고7.8％～12.8％，재옥미생육기교전통경작처리고6.8％～9.3％。쌍심송복개처리단주간물질적루량재소맥、옥미생육기내분별교전통경작처리고22.2％～60.7％、19.6％～39.9％。쌍심송복개처리소맥、옥미생육기내협면적지수시종대우전통경작처리，증가폭도분별위28.4％～91.8％、6.7％～63.5％。쌍심송복개처리수분이용효솔위22.8 kg/（hm2· mm），교전통경작처리고39.9％，소맥화옥미적총산량체11989.5 kg/hm2，교전통경작증산11.4％，차이겁현저。유차가견，쌍심송복개가제고토양함수량화수분이용효솔，증가작물간물질적루량，제고협면적지수，진이제고산량。
In the paper ,the effects of double-subsoiling cover (DSC) on soil water content ,dry matter accumulation ,LAI ,water use efficiency and crop yield were studied under wheat-maize double-cropping system in hilly arid area .T he results indicated as follow :Compared to the tradi-tional tillage ,soil water content in 0-200 cm soil layer of DSC treatment was higher ,increased by 7 .8% -12 .8% in wheat season and 6 .8% -9 .3% in maize season ;The dry matter accumulation of w heat and maize in DSC treatment increased by 22 .2% -60 .7% and 19 .6% -39 .9% ,respec-tively ;The LAIs of wheat and maize for DSC were larger in all growth stages ,which increased by 28 .4% -91 .8% and 6 .7% -63 .5% ,respectively ;The water use efficiency of DSC was 22 .8 kg/(ha · mm ) ,increased by 39 .9% ;The total yield of wheat and maize in DSC treatment was 11 989 .5 kg/ha and increased by 11 .4% compared to traditional tillage ,the difference being sig-nificant .The result suggested that DSC could increase the soil water content ,dry matter accumu-lation ,LAI ,water use efficiency and crop yield .