关键词: 旱地农业；抗旱节水生物学；水分利用效率；补偿效应；学科交叉

Abstract:

Plant droughtresistant and watersaving biology is an important subject basis for developing dryland farming and agriculture at waterscarce regions. The major issues facing us include: in terms of research route, how to correctly deal with the relation between studies on molecular level and on plant as a whole, so as to promote the mutual supplement of the two; in terms of research orientation, how to combine effectively drought resistance with water use efficiency and yield properties, so as to realize high yield and high efficiency; in terms of application of research findings, how to strengthen interdisciplinary of subjects, so as to achieve actual effect as soon as possible. The paper introduces several scientific and technological difficult points in the practice related to drought-resistant and water-saving biology in semiarid and sub-humid regions. And suggestions are proposed.

Key words: dryland farming, drought-resistant and water-saving biology, water use efficiency, compensatory effect, interdisciplinary subjects