Abstract: Strategies for sustaining the increasing population are to enhance the nutrition output of a certain unit and to economize the consumption of grain source.By means of macro-and microcosmic researches and on the basis of former results on food and nutriology science,it is revealed that the balanced nutrition supply could save the consumption of grains and green mass outyields grains one to three times in protein,fats,carbohydrate,vitamin and minerals according to the plant growth curve.In China,developing nutrimental agriculture for balanced nutrition supply and maximum nutrition output would be a way to meet the increasing food needs of its 1.6 billion population in next century.