Determination method for photosynthesis of wheat and application of determination method

The invention belongs to the technical field of agricultural crop information detection, and particularly relates to a wheat photosynthesis determination method and application thereof. According to the method, flag leaves of in-vitro wheat are used as objects and wrapped with wetted absorbent cotton, and a photosynthetic tester is used for detection. The absorbent cotton has strong water absorption capability and moisture volatilization prevention capability, and also has softness, in-vitro flag leaves are wrapped by the wetted absorbent cotton, so that the moisture emission of the leaves can be reduced, the photosynthetic parameters of the flag leaves are kept stable in a short time, the photosynthesis of wheat is accurately, simply and conveniently measured, and in-vivo detection is replaced; according to the invention, the position of the specific measurement area is determined, air leakage of the leaf chamber can be avoided, errors caused by water loss are reduced, and the accuracy of a detection result