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时间:2018-04-16
《耕作措施对燕麦田土壤水分_温度及出苗率的影响》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、麦类作物学报2014,34(5):692-697JournalofTriticeaeCropsdoi:10.7606/j.issn.1009-1041.2014.05.19网络出版时间:2014-5-12网络出版地址:http://www.cnki.net/kcms/doi/10.7606/j.issn.1009-1041.2014.05.19.html耕作措施对燕麦田土壤水分、温度及出苗率的影响刘霞1,刘景辉1,李立军1,田露1,张志南2,海林1(1.内蒙古农业大学农学院,内蒙古呼和浩特010019;2.西北农林
2、科技大学农学院,陕西杨凌712100)摘要:为明确耕作措施对旱作燕麦田土壤水分、温度及出苗率的影响,以燕麦品种坝莜1号为材料,于2011-2013年在内蒙古清水河县进行耕作措施比较试验。结果表明,保护性耕作措施(免耕、春松和秋松)能明显减少农田冬闲期土壤水分散失,提高0~100cm土壤贮水量。在燕麦苗期,免耕、秋松、春松和秋翻处理的0~100cm各土层2年平均土壤含水量较春翻分别高出11.55%、9.66%、7.04%和1.22%。深松与免耕较翻耕在土壤温度较高时有一定的降温作用,在土壤温度较低时又具有一定的升温效
3、应。燕麦出苗率表现为免耕>春翻>春松>秋翻>秋松。燕麦出苗率与苗期0~10cm土层土壤含水量呈极显著正相关,与其他土层土壤含水量和耕层土壤温度无明显相关性。综合考虑土壤水分、温度和出苗率,以免耕处理效果最佳。关键词:耕作措施;燕麦;土壤水分;土壤温度;出苗率中图分类号:S512.6;S151.9文献标识码:A文章编号:1009-1041(2014)05-0692-06EffectofDifferentTillageManagementsonSoilWater,TemperatureandEmergenceRatei
4、nOatFieldLIUXia,LIUJinghui,LILijun,TIANLu,ZHANGZhinan,HAILin(1.AgronomyCollegeofInnerMongoliaAgricultureUniversity,Hohhot,InnerMongolia010019,China;2.AgronomyCollegeofNorthwestA&FUniversity,Yangling,Shaanxi712100,China)Abstract:Inordertodeterminetheeffectsofdi
5、fferenttillagemanagementsonsoilwater,temperatureandemergencerateindrylandoatfield,thisexperimentwasconductedwithoatcultivarBayou1asthetestmaterialunderdifferenttillagemanagementsinQingshuihecounty,InnerMongoliain2011-2013.Theresultsshowedthatconservationtillag
6、ecouldsignificantlyreducesoilwaterlossduringwinterfallowandincreasesoilwaterstoragein0~100cmdepth.Inoatseedlingstage,theaveragesoilwatercontentin0~100cmsoillayeroftreatmentsofno-tillage(NT),subsoilinginautumn(SA),subsoilinginspring(SS)andplowinginautumn(PA)inc
7、reasedby11.55%,9.66%,7.04%and1.22%thanthatofplowinginSpringin2years.Comparedwithconventionaltillage,somecool-ingeffectofsubsoilingtillageandNTonthesoiltemperaturewasobservedwhilethesoiltemperaturewashigher,andsomewarmingeffectwasobservedwhilethesoiltemperature
8、waslower.In2years,thehighestemergenceratewithanaverageof93.8%wasfoundintheNTtreatment,withatrendasNT>PS>SS>PA>SAamongthosetreatments.Theemergenceratewasverysignificantlyandposi-tiv
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