Abstract:

Abstract: Chlorophyll content is the impotent index to photosynthetic activity of corps, and there is a very close relationship with yield. In order to control chlorophyll content by fertilization, in this paper ,the rule that the effect of N-Fertilizer and marure cooperation to chlorophyll content of winter wheat and summer corn was discovered by long-term fertilization. It was showed the chlorophyll content of winter wheat and summer corn would increase with N-Fertilizer and marure increasing, and the functions were expressed by equation: