Regulative Effect Of Nitrogenous Fertilizing Period On Photosynthetic Capability Of Spring Wheat Canopy Organs And Yield And Quality

Under the condition of same quantity nitrogenous fertilizer, discuss the effect of nitrogenous fertilizing period on construction and decline of photoynthetic organs of spring wheat. Synchronously,study the effect on the yield and compensative impacting and the effect on the content of starch,fat,protein,ash,phosphorus,kalium,calcium,iron,zinc, victamine of spring wheat after decreasing photosynthetic organs .The result indicates that under the regulation of nitrogenous fertilizing period, the photoynthetic decline period of no-leaf organs come later than the leaf organs. It is important for the photoynthetic capability of wheat on the later bearing period.Comparing with the normal plant ,the content of the unite volume quantity,protein,starch and ash are lower.But, the content of VB1 is higher than the normal plant.Along with the nitrogenous fertilizing period,the compensation impacting for the grain weight of every fringe,and the content of the starch in wheat seed reduces gradually.Getting the nitrogen from prophase to anphase can increase the content of protein,fat,VE,and the content of total nitrogen in the canopy organs.The contribution to the weight of every thousand of grain about no-leaf organs are higher than leaf organs ,but the contribution to the weight of every fringe about leaf organs are higher than no-leaf organs.The effect of no-leaf organs on protein,VE,starch are stronger than the leaf organs.When the nitrogenous fertilizer all use in the seed period,the content of the calcium,iron,kalium,phosphorus all have the maximum value.