With pot-culture experiments,we evaluated the effect of saline-sodic stress on dry matter accumulation of various organs at different growth stages of rice.

Under the full potassium(K) supply and applying the artificial climate room to control night temperature technology,we studied the effect of raising night temperature on potassium content of three different growth stages in Yunnan flue-cured tobacco.

Effect of water-limited deficit stress in different growth stages on winter wheat grain yields and their yield constituents;

Effects of water limited deficit stress during different growth stages on leaf protective enzymes of winter wheat;

Effects of alternate partial root-zone irrigation on water saving and quality regulating of flue-cured tobacco at different growth stages

Study on educational juncture presents a means of solving the problem caused by imposing undue emphasis on the proportion of the graduates entering of a higher level schools and examination-oriented education, to improve efficiency of teaching and learning, and provide valuable theory and tactics.

Students must be given opportunity education if they are trained to be talents who can adapt themselves to market-oriented economy The contents of opportunity education include: to strengthen a sense of opportunity, to cultivate the ability, to recognize, seek and utilize opportunity.