In this article,five heavy metals were added into the soil with gradient addition amount(Cd1,Pb1,Cr1,Hg1,As1; Cd2,Pb2,Cr2, Hg2, As2),and the later effects of five heavy metals (Cd, Pb, As, Hg, Cr) stress onmaize grain yields after wheat planted one season and wheat- maize- wheat planted three seasons,were analyzed.Theresults showed that weight of corncobs and biomass under five heavy mentals stress treatments were not lower than that of CK treatment; and weight of corncobs under Hg2,Cd2,Hg1,As2 treatments were significantly higher than that of CK treatment.For the same heavy metal,weight of axis, weight of grain yield per plant, economical coefficient values were all higher in higher dose than lower dose After wheat planted one season, maize grain yields under heavy mental stress treatments (except Cr1 treatment) were higher compared with that under CK treatment,maize grain yields were higher under Cd1 (8 276. 7 kg /ha),Pb1 (8 059. 9 kg /ha),and Hg1 (7 879. 5 kg /ha) treatments,especially under Cd1,Pb1 stress,significantly higher than CK (6 675. 5 kg /ha) treatment.
NIE Sheng-wei
,
HUANG Shao-min
,
ZHANG Shui-qing
,
ZHANG Qiao-ping
,
GUO Dou-dou
. Later Effects of Various Heavy Metal Stress on Maize Grain Yields in Wheat-Maize Rotation Systems[J]. Acta Agriculturae Boreali-Sinica, 2013
, 28(4)
: 123
-129
.
DOI: 10.3969/j.issn.1000-7091.2013.04.023
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