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- W2362330787 abstract "【Objective】 The effect of nitrogen fertilizer applied in different ways on the change regularity of protective enzymes activity in leaves of super high yield maize was studied to provide a scientific theory for the super-high-yield production model.【Method】 Six treatments were designed in different distribution proportions under the condition of a certain total nitrogen fertilizer using the super high yield maize hybrid Xianyu-335 as the experimental material:N1.Base fertilizer 100%;N2.Base fertilizer 80%,topdressed in jointing stage 20%;N3.Base fertilizer 80%,topdressed in jointing stage 10%,topdressed in anthesis stage 10%;N4.Base fertilizer 60%,topdressed in jointing stage 40%;N5.Base fertilizer 60%,topdressed in jointing stage 30%,topdressed in anthesis stage 10%;N6.Base fertilizer 60%,topdressed in both jointing stage and anthesis stage with 20%.The effects of nitrogen fertilizer application at stages in different proportions on the outcome of maize,the protective enzyme activity(speroxide dismutase(SOD),proxidase(POD),ctalase(CAT)),the content of malondialdehyde(MDA),the content of chlorophyll(Chl) and soluble protein in leaves were studied.【Result】 The results showed that the yield of N6 treatment was the highest,the yield of N2 treatment was the lowest,and N6 treatment increased production by 7.3%,10.2% and 11.1% than N4,N1 and N2 treatmemt respectively.The difference of Chl content and soluble protein in leaves of all different treatments were not significant before filling stage.After that,the content of Chl and soluble protein of N6 and N5 in leaves were significantly higher than that of N4,N1 and N2.The protective enzyme activity and MDA content of each treatment were not significant before anthesis stage,but protective enzyme activities of N6 and N5 were significantly higher than that of N4,N1 and N2 after filling stage,and the MDA content was significantly lower than that of N4,N1 and N2 treatment.【Conclusion】 The study showed that nitrogen fertilizer application at stages in different proportions can reinforce protective enzyme activity and slow down the aging of leaves in late growth stage,thereby enhancing the yield.The best nitrogen application model is the base fertilizer applied by 60%,both the jointing stage and anthesis stage should be topdressed by 20%.The highest yield of maize can be up to 14 852.2 kg/hm2." @default.
- W2362330787 created "2016-06-24" @default.
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- W2362330787 date "2011-01-01" @default.
- W2362330787 modified "2023-09-25" @default.
- W2362330787 title "Effect of nitrogen fertilizer application at stages in different proportions on protective enzymes activity in leaves of super high yield maize" @default.
- W2362330787 hasPublicationYear "2011" @default.
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