CAJ | 학술논문

采用了螯合-缓冲营养液培养方法对小麦进行了苗期培养试验,在3个P水平(0,0.6,3.0 mmol/L)和3个Zn水平(0,3,30 μmol/L)的完全组合下对小麦苗期生长及Zn、Fe、Cu、Mn营养进行了研究,旨在为小麦微肥施用提供理论依据.结果表明,P、Zn的正常供应促进了小麦生长,二者的缺乏与过量均会抑制小麦发育,且这种影响在冠部表现得更为明显.在小麦苗期,Zn与Cu的吸收存在明显的拮抗作用,但供Zn则促进了Zn和Cu的转运,而Mn转运则受到了抑制;过量供Zn时,大量Zn被转运到冠部,同时明显抑制了(Fe+Cu+Mn)的吸收总量;P的供应显著地抑制了Fe的吸收,但P的供应提高了Zn、Cu、Mn的转运率;P、Zn在对Zn与Fe、Cu、Mn间吸收竞争的影响中,Zn本身的影响要比P的影响更为明显,供Zn明显促进了小麦幼苗对Zn的吸收;在小麦幼苗冠部,Zn与Fe的竞争中,供P利于Zn的吸收,缺P则利于Fe的吸收;而Zn与Cu以及Zn与Mn间的竞争中,缺磷时利于Zn的吸收,供磷后则利于Cu和Mn的吸收.总之,小麦幼苗Zn、Fe、Cu、Mn营养中,P、Zn的不同配比会不同程度地改变Zn与Fe、Cu、Mn的协同或拮抗效应.
채용료오합-완충영양액배양방법대소맥진행료묘기배양시험,재3개P수평(0,0.6,3.0 mmol/L)화3개Zn수평(0,3,30 μmol/L)적완전조합하대소맥묘기생장급Zn、Fe、Cu、Mn영양진행료연구,지재위소맥미비시용제공이론의거.결과표명,P、Zn적정상공응촉진료소맥생장,이자적결핍여과량균회억제소맥발육,차저충영향재관부표현득경위명현.재소맥묘기,Zn여Cu적흡수존재명현적길항작용,단공Zn칙촉진료Zn화Cu적전운,이Mn전운칙수도료억제;과량공Zn시,대량Zn피전운도관부,동시명현억제료(Fe+Cu+Mn)적흡수총량;P적공응현저지억제료Fe적흡수,단P적공응제고료Zn、Cu、Mn적전운솔;P、Zn재대Zn여Fe、Cu、Mn간흡수경쟁적영향중,Zn본신적영향요비P적영향경위명현,공Zn명현촉진료소맥유묘대Zn적흡수;재소맥유묘관부,Zn여Fe적경쟁중,공P리우Zn적흡수,결P칙리우Fe적흡수;이Zn여Cu이급Zn여Mn간적경쟁중,결린시리우Zn적흡수,공린후칙리우Cu화Mn적흡수.총지,소맥유묘Zn、Fe、Cu、Mn영양중,P、Zn적불동배비회불동정도지개변Zn여Fe、Cu、Mn적협동혹길항효응.
A culture experiment was conducted to evaluate the growth and the nutrition of Zn,Fe,Cu,Mn of wheat plants at the seedling stage in chelater-buffered solution.Zn rates were applied at three levels of deficient (0 μmol/L),normal (3 μmol/L),excess (30 μmol/L) and P was also designed in three rates,namely,0 (insufficiency),0.6 (normal),3.0 (excess) mmol/L.The results showed that the growth of wheat was increased under normal P and Zn supply,but there would be depressed if excess or no P and Zn addition to culture solution,and these effects were stronger to the shoots than that of the roots;There was obvious antagonism between Zn and Cu at wheat seedling stage,but the translocations from root to shoot of Zn and Cu were increased under the supply of Zn,while that of Mn was decreased;A large mount of Zn was translocated to the shoot under excess Zn supply,and the total translocation of (Fe+Cu+Mn) was decreased drastically at the same time.The uptake of Fe was inhibited by the P supply,but the translocation ratio of Zn,Cu and Mn increased under the P supply;the effect of Zn itself was more remarkable than P on the uptake between Zn and Fe,Cu,Mn,the uptake of Zn was increased obviously under the Zn supply.To the shoot of wheat seedling,the uptake of Zn was easier than Fe under P supply,but the uptake of Fe overmatched that of Zn without P supply;For Zn and Cu,the uptake of Zn excelled that of Cu with no P supply,but the uptake of Cu outbalanced Zn after P supply,the same as the uptake between Zn and Mn.In conclusion,the different combinations of Zn and P would change the synergism or antagonism between Zn and Fe,Cu,Mn more or less.