A Study on Zinc-Phosphorus Interaction of Wheat Plants at Different Growth Stages

doi:10.7668/hbnxb.2011.05.039

Abstract

Abstract: A field experiment using 4 genotypes of winter wheat(Zhongyu6,Xianyan22,Xiza1,Zhengmai9023)which have different zinc efficiency was conducted to investigate the interaction of P-Zn of wheat plants under different combinations of Zn and P fertilization rates.Zinc rates were supplied at two levels of deficient(0 kg/ha)and normal(7 kg/ha),and P was designed in five rates,namely,0(deficiency),50(low),100(normal),150(high),200(excess)kg/ha.The obtained results showed that P application to soil led to shoot zinc concentration decreased of wheat plants,and it was more obviously at wheat growth prophase(seedling time,drawn bural times and tassel times)than growth anaphase.The phosphorus concentration of the shoot apparatus of wheat plants was decreased under zinc supply at seedling time,drawn bural times and mature times respectively,however,the phosphorus concentration increased at drawn burel and grouting times of wheat plants.It was said that the time of zinc and phosphorous antagonism was main at wheat growth prophase(seedling time,drawn bural times)and anaphase(mature times).At the different growth stages of wheat,the shoot zinc concentration decreased degree of wheat under phosphorus supply was different as different apparatus,the order of decreased degreed of zinc concentration was:stemfringe(include wheat grain and glume)leaves,and the main time of interaction time of phosphorus and zinc was wheat growth prophase at stem,and the grain was the main place at wheat growth anaphase.The shoot zinc concentration of wheat was decreased under phosphorus supply obviously,and the decreased more and more with the increased of phosphorus supply;on the other side,no matter what the phosphorus concentration increased or decreased under zinc supply,it only had little difference,most was not reach prominence levels,so the effect of P to Zn was more obvious than Zn to P,maybe it was because plant needs more P than Zn.It is concluded the place and degree of P-Zn antagonism of wheat was different at different growth stages

Key words: Zn, Phosphorus, P/Zn ratio, Wheat

CLC Number:

S512.1

MAI Wen-xuan, TIAN Xiao-hong, LU Xin-chun. A Study on Zinc-Phosphorus Interaction of Wheat Plants at Different Growth Stages[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(5): 205-213. doi: 10.7668/hbnxb.2011.05.039.

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