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《补水移栽对甜菜苗期生长及产量品质的影响-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、第32卷第1期干旱地区农业研究V01.32No.12014年1月dturalResearchintheAridAreasJan.213I14补水移栽对甜菜苗期生长及产量品质的影响李明1,2,张立峰,一,武东霞,一,臧熹岩2,刘玉华,2(1.农业部张北农业资源与生态环境重点野外科学观测实验站,河北张北076450;2.河北农业大学农学院,河北保定071001)摘要:为明晰补水移栽对纸筒育苗甜菜苗期生长及产量品质的影响,研究比较了地下式补水与传统的地上式补水的土壤润湿结构特征,补水量对甜菜苗期地下部根系与地上叶
2、片发育的影响,以及补水移栽在两种土壤条件下的甜菜产量与品质效应。结果表明,地下式补水创造了环裹于秧苗纸筒底部的土壤湿润球,利于向秧苗供水与田问有效保水。随补水量的增加,甜菜苗期侧根数、主根长、主根粗、根鲜重、叶片量、叶面积随之显著增长。在华北寒旱区砂质栗钙土农田,以成活率与壮苗为目标的甜菜移栽补水量为150—200ml·株一、壤质草甸栗钙土农田为100150ml·株I1为宜,较不补水甜菜块根增产68.78%一81.82%,糖产量提高65.57%一81.82%。地下式补水移栽,是提高甜菜成活率的关键;适量补水
3、实现培育壮苗,成为甜菜高产的基础。关键词:补水移栽;地下式补水;旱作农田;甜菜中图分类号:$359.2;s566.3文献标志码:A文章编号:1000.7601(2014)01.0018—07Efectoftransplant、thsupplementarywateronseedlinggrowth,yieldandqualityofsugarbeetLIMing,,ZHANGLi.feng,,WUDong—xia,2ZANGXi.yan2LIUYu.hual,2,,(1.ZhangbeiAgricultur
4、alResourceandEcologicalEnvironmentKeyFieldResearchStation,MinistryofAgricultureofChina,Zhangbei,Hebei076450,China;2.CoUeg~ofAgronomy,AgriculturalUnive~ityofHebei,Banding,Hebei071001,China)Abstract:Inordertomakecleartheeffectoftransplantwithsupplementarywat
5、eronseedlingstagegrowth,yieldandqualityofsugarbeetbypapercylinderseedling,ensurethesuitableperiodfortransplant,highyieldandgoodquali—tyofthesugarbeetproduction.Weresearchedandcomparedthestructuralcharacteristicsofsoilwettingbetweenunder-groundandtraditiona
6、lsurfacesupplementarywater,theimpactsofsupplementarywatervolumestothedevelopmentofrootsystemandleavesintheseedlingstageofsugarbeet,andtheeffectofyieldandqualityofsugarbeetunderthecon—ditionsoftransplantwithsupplementarywaterandtwotypesofsoils.Theresultssho
7、wedthatundergroundsupplementarywaterhascreatedawettedsoilballwrappedthebottomofpapercylinderseedlings,itwasusefultosupplywaterforsugarbeetseedlingsandeffectivelytokeepwaterinthefield.Withthesupplementarywaterincreasing,thelateralrootnuln—bets,taprootlength
8、,taprootdiameter,freshrootweight,leafnumbersandleafareasinseedlingstagewillbesignificant—lyincreased.IncoldandaridregionsofNorthChina,forthetargetofhighsurvivalrateandsoundseedling,thesuitablesupplementarywat
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