一、研究抗旱药物的意义:随着人口的增长、工农业生产的发展及生活水平的提高,人类对淡水的需用量在迅速上升。据联合国科教文组织估计,目前,用水量的年增长率达4％,今后25年内,人类的用水量将增加一倍以上。有人认为,目前地球上陆地面积6％已面临淡水不足,至少43个国家缺水。鉴于上述情况,国际上对植物的抗旱问题正予以越来越多的关注。如 First, to study the significance of drought-resistant drugs: With the growth of population, the development of industrial and agricultural production and the improvement of living standards, the demand of human beings for freshwater is rapidly rising. According to UNESCO estimates, at present, the annual growth rate of water consumption of 4%, the next 25 years, human water consumption will more than double. Some people think that currently, 6% of the land area on Earth is already facing a shortage of fresh water and at least 43 countries lack water. In view of the above situation, the issue of drought resistance of plants in the world is receiving more and more attention. Such as