Carbon metabolism is an important process in soybean,however,there are few research on the variable rule of carbon metabolism product in different organs of soybean.Three soybean varieties were used to test the content of soluble sugar,sucrose and starch in different growing stages.With the growing process,the soluble sugar content appearedV-type changes in stem,leaves,and petioles,starch content also presented the same type in stem.The starch content presented inverted V-type changes in stem,and there was ...