植物生长调节剂（组合）对南方地区淮山药叶片营养及产量的影响

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1、2010年23卷4期西南农业学报Vo1．23Nn4SouthwestChinaJournalofAculturalSciences1177文章编号：1001—4829(2010)04—1177—05植物生长调节剂(组合)对南方地区淮山药叶片营养及产量的影响温国泉，陆宇明，钦洁，莫江妮，文成忠，吴建明(I．广西农业科学院农业科技信息研究所，广西南宁530007；2．广西大学农学院，广西南宁530005；3．广西农业科学院经济作物研究所，广西南宁530007)摘要：为探索有效的植物生长调节剂种类及浓度，试验以“桂淮2号”淮山药为供

2、试品种，研究矮壮素(ccc)与羟季铵·萘合剂(氯化胆碱cc+萘乙酸NAA)对南方地区淮山药叶片营养及产量的影响。结果表明：CCC和cc+NAA在较低浓度时对淮山药叶片全N含量影响不大，而增加浓度却可以保持叶片生长后期具有较高的N含量，廷缓叶片衰老。喷施CCC2250mg·提高了淮山药块茎膨大中期叶片P含量，并减缓块茎膨大中后期叶片K含量的下降，淮山药产量达到33255．15kg·hm_，比对照及仅喷0．15％KH2PO4处理增幅为15．2O％和13．22％；结薯比例最好，结单薯、双薯比例总和达到94．66％；块茎平均长度61．

3、1am，说明CCC对块茎的伸长生长有一定的促进作用。关键词：淮山药；矮壮素；羟季铵·萘合剂；叶片营养；产量；南方地区中图分类号：$567文献标识码：AEfectsofPlantGrowthRegulators(combination)onLeafNutritionandYieldofYaminSouthChinaWENGuo—quan·，LUYu—ming，QINJie。，MOJiang．ni，WENCheng—zhong2，WUJian—ming3(1．ScienceandTechnologyInformationResea

4、rchInstitute，GuangxiAcademyofAgriculturalSciences，Gna．gxiNanning530007，China；2．AgriculturalCollege，GuangxiUniversity，GuangxiNanning530005，China；3．CashCropResearchInstitute，GuangxiAcademyofA‘culturalSciences，GuangxiNanning530007，China)Abstract：Thisstudyhasbeencarried

5、outtoresearchtheefectsofdiferentplantgrowthregulators(combination)onleafnutritionandyieldofyam(DioscoreaoppositaThunb．)inSouthChinaandlookforefectiveconcentrationandcate80ryofplantgrowthregulators，viz．chlormequatchloride(CCC)andCC(cholinechloride)+NAA(naphthaleneace

6、ticacid)．YamvarietyGuihnai2wasuseda8thecontrolinthisstudy．TheresultsshowedthatsprayingCCCcouldcoordinatenutritionofyamleavesinthemiddle—lateperiodoftubergrowth．SprayingthelowconcentrationofCCCandCC+NAAcouldhardlyinfluenceonNcontentofyamleaves．However，toincreaseconce

7、ntrationofCCCandCC+NAAusedtotreatyamcouldmaintainhighlevelofNcontentofleavesinthelateperiodofleafgrowthsoastodelay8舀ngofleav—es．Afterspmy~withCCCinconcentration2250mg／L，PcontentofleavesofyamwouldbeenhancedanddecreaseofKcontentofleaveswouldslowdowninthelateperiod，and

8、theyieldoftuberwouldreach33255．15kg／ha，whichwas15．20％and13．22％hisherthanyieldofCKandyamsprayedonlywith0．15％KH2PO4，respectively，tuberformat