| Grain-filling properties of spring maize under different cultivation patterns |
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| DOI：10.7606/j.issn.1000-7601.2013.03.01 |
| Key Words: Keywords:spring maize cultivation pattems grain-filling properties production factors |
| Author Name | Affiliation | | LI Guohong | College of Agronomy, lnner Mongolia University for Nationalities,Tongliao,lnner Mongolia 028042,China | | YANG Hengshan | College of Agronomy, lnner Mongolia University for Nationalities,Tongliao,lnner Mongolia 028042,China | | ZhANG Yuqin | College of Agronomy, lnner Mongolia University for Nationalities,Tongliao,lnner Mongolia 028042,China | | XIAO Li | College of Agronomy, lnner Mongolia University for Nationalities,Tongliao,lnner Mongolia 028042,China | | LI Yingyiing | College of Agronomy, lnner Mongolia University for Nationalities,Tongliao,lnner Mongolia 028042,China | | GAO Julin | College of Agronomy,lnner Mongolia Agricultural University,Huhhot,Inner Mongolia 010019,China |
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| Abstract: |
| The grain-filling characteristics of Jinshan 27 and Xianyu 335 under different planting patterns,the farmers model(NH,target yield 11.25t·hm-2),high yield model(GC,target yield 12.75t·hm-2),and higher yield model(ZGC1,ZGC2,target yield 14.25t·hm-2),were studied in west Liaohe plain in this paper.The results showed that Logistic equation eould be used to simulate grain filling proeess of spring maize in different eultivation patters.Except the mid-basal of Xianyu 335,order of the final weight of one hundred kernel of two varieties in different planting models was NH>GC>ZGC1>ZGC2,order of the initial grain-filling potential of two spring maize varieties in different planting models was NH>GC>ZGC,initial grain-filling potential of jinshan 27 was higher in ZGC1 than in ZGC2,but lower in ZGC1 than in ZGC2 for Xianyu 335.The maximum grain-filling rate and mean grain-filling rate in four cultiva-tion pattems were ordered as NH>GC>ZGC2>ZGC1.NH model had shortest maximizing grain-filling time while ZGC2 model had the longest one.Effective grain-filling time in four planting models was ordered as ZGC1>ZGC2>NH>GC. There were some differences in the mean grain-filling rate in different stages.Gradual-increase grain-filling period and fast-increase grain-filling period in those models were ordered as NH>GC>ZGC,while slow-inerease grain-filling period was ordered as ZGC>NH>GC.The ratio of dry matter accumulation to yield in fast-inerease period in those four planting models was
ordered as ZGC2>ZGC1>GC>NH.The order of dehydrating rate in earlier stage in those planting models was NH>GC>ZGC1>ZGC2.At32~60 days after pollination,that order was ZGC2>ZGCI>GC>NH.The differences among different patterns were significant. |
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