Using differential balance

the thermalspectrogram of roots

stems andleaves in three stages of growth and development of wheet is analysed.The trigonometry figure composed of the ratios of oxygen to heat forwheet shows the relationshiop for wheet

it is found that a tangent valueof one angle is negotively related to yield per plant

and the sum of averageenergy for activation positively with ultimate yield.It is thought that it ispossible to use the two values as new criterions for wheet breeding.Althoughthe values cannot indicate substantial meaning

it could demonstrate theultimate state of yield from the relationship among root

stem and leavesof wheet

which provides basis for directional cultivation and breeding.The use of the criterions not only shorten the period to breed but alsoexpand the range for application of the"differential balance".