双深松覆盖对丘陵旱区土壤水分和作物产量的影响  

Effect of Double-subsoiling Cover on Soil Water and Crop Yield in Hilly Arid Area

作　　者：李俊红[1,2] 姚宇卿[1,2] 吕军杰 张洁[1,2] 丁志强[1,2] 于新峰 

机构地区：[1]洛阳农林科学院,河南洛阳471023 [2]中国农业科学院洛阳旱农试验基地,河南洛阳471023

出　　处：《河南农业科学》2013年第11期17-20,共4页Journal of Henan Agricultural Sciences

基　　金：国家科技支撑计划项目(2007BAD88B02-04);国家"948"项目(2010-Z21)

摘　　要：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0～200cm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22.8kg/(hm2·mm),较传统耕作处理高39.9%,小麦和玉米的总产量达11 989.5kg/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。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 .

关 键 词：丘陵旱区 双深松覆盖 小麦 玉米 水分 叶面积指数 干物质积累 产量 

分 类 号：S513[农业科学—作物学] S512