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时间:2020-05-03
《双元覆盖对果园土壤水分的调控效果-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、应用生态学报2014年8月第25卷第8期ChineseJournalofAppliedEcology,Aug.2014,25(8):2289"2296双元覆盖对果园土壤水分的调控效果水田飞谢永生一索改弟。丁亚东(西北农林科技大学资源环境学院,陕西杨凌712100;中国科学院水利部水土保持研究所,陕西杨凌712100)摘要为了研究双元覆盖对渭北旱塬苹果园土壤水分的调控效果,对4个不同处理(地膜压秸秆双元覆盖、地膜覆盖、秸秆覆盖和对照)下的果园0~600am土层范围内的土壤水分进行测定,并对果树产量和枝条生
2、长量进行了统计.结果表明:双元覆盖的整体保墒效果最佳,0~600cm土壤贮水量比对照高6.7%;长期双元覆盖能够有效地缓解该地区深层土壤出现的干燥化现象,稳定层(240—600cm)月平均土壤贮水量比对照高64.22mm;双元覆盖和地膜覆盖两种措施均能降低浅层(0—60am)土壤水分随时间的波动,提高浅层土壤水分随时间变化的稳定性;与单一覆盖方式相比,双元覆盖方式更能减小土壤剖面水分垂直变异,提高土壤剖面水分垂直分布的稳定性;双元覆盖方式增产效果明显,苹果产量比对照高48.2%.综上,相对于单一的覆盖方
3、式,双元覆盖能更好地调控果园土壤水分、提高苹果产量.关键词渭北旱塬水分调控双元覆盖水分变异文章编号1001—9332(2o14)o8—2289—08中图分类号S156.92文献标识码AControllingefectsofdualmulchingOilsoilmoistureinanappleorchard.TIANFei,XIEYong—sheng,SUOGai.di,DINGYa.dong(CollegeofResourcesandEnvironmentScience,NorthwestA&FUni
4、versity,Yangling712100,Shaanxi,China;。[nstituteofSoilandWaterConser-vation,ChineseAcademyofSciences&MinistryofWaterResources,Yangling712100,Shaanxi,China).一Chin.App1.Eco1.2014,25(8):2289-2296.Abstract:Toinvestigatethecontrollingeffectsofdualmulchingonsoi
5、lmoistureinanappleor-chardontheWeibeirainfedhighland,soilmoistureinthe0-600cmsoilprofileoftheappleor-chardwasmeasuredunderfourmulchingtreatments(plasticfilmplusstraw.plasticfilmandstrawmulches,aswellasanon.mulchingcontro1),andmeanwhiletheappleyieldandbra
6、nchgrowthin.crementwereanalyzedstatistically.Resultsshowedthatthedualmulchingtreatmenthadthebesteffectonsoilmoistureconservation.andthesoi1waterstorageinsuchasoi1profilewas6.7%high.erthanthecontroltreatment.Long.termdualmulchingcouldeffectivelyalleviates
7、oildesiccationoccurringindeepsoillayerintheregion,andthemonthlyaveragedsoilwaterstorageinstablelayer(240—600cm)was64.22mmhigherthanthatofthecontroltreatment.Bothplasticfilmplusstrawandplasticfilmmulcheswereabletoreducethetemporalfluctuationofsoilmoisture
8、inshal—lOWsoilf0—60cm)andenhancethetemporalstabilityofsoilmoistureinthelayer.Comparedwiththesinglemulchingtreatments.thedualmulchingtreatmentcouldeffectivelydecreasethevertica1variationofsoiImoistureintheprofileandimprovet
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