Abstract: The historical evolution and present situation of environment in desert area of the Hexi Corridor demonstrate that intensifying human activity and over-extortion beyond nature's sustainable ability are the main reasons of the eco-environmental deterioration in desert oasis. In order to make the oasis sustainable and perpetual, population control, refraining from over-extortion and especially reduction of commodity grain pressure are vital among various countermeasures.

Key words: rice, high temperature, starch synthesis, rice grain quality, gene expression