The Regularity Of Nutrition Quality Formationand Research On Yield Regulation Of The High-Oil Maize

The thesis studied the change of nutrition quality and the characteristic of accumulation in different types maize kernel (containing High Oil Maize, High Starch Maize, High Quality Protein Maize and the normal high yield Maize which plant type is compact) during filling-maturing stage. The results indicated: Accumulation of dries material and starch and protein and Oil in different types all accord to the "S" curve line. The kernel of High Oil Maize and High Quality Protein Maize dehydrate slowly. Starch accumulates fast during the period from 20 DAP to 50 DAP; Protein and Oil accumulate fast during the period from 30 DAP to 50 DAP; the content of starch and oil varies like a parabola during filling-maturing stage. The starch content of High Starch Maize is higher than other types. The Oil content of High Oil Maize is higher than other types. The change of protein content can be expressed by the equation "Y=X/(-A +BX)".We use Chunyou No1 as our experimented stuff and use Four-factor saturated experimental design (416A) in this experiment to research the effects of fertilization and density on the seed yield and the oil yield of high-oil maize. The results indicated that: Nitrogenous fertilizer, Phosphor fertilizer, Potassium fertilizer and density all have effect on the seed yield and the Oil yield of high-oil maize , and these effects can be expressed with parabola equation (Y=A+BX+CX2) . When each factor value is suitable, the seed yield and the oil yield of high-oil maize will increase obviously; The effect of each factor on theseed yield and the Oil yield is similar. Because the Oil content difference is lower then the seed production difference. Adopting measures of N328kg/hm2 . P2O5118kg/hm2, K2O:150kg/hm2 and57.5 thousand plant//hm2, the seed yield of High-oil maize will reach 9746kg.Candidate:XuJinxingSpeciality:PlantingSupervisor:LiMingZhangXiangying...