水是地球上是为丰富的资源,但是,就世界范围来说。在限制农作物和森林允分实现其遗传潜力所能达到的产量的各种环境胁迫中,以干旱胁迫最为常见和重要。世界上约有1/3的陆地属于干旱和半干旱地区,遍及60多个国家和地区。而其余大部分地区也经常遭受周期性或难以预期的干旱。由于干旱胁迫所导致作物和树木的减 Water is an abundant resource on earth, but globally. Drought stress is the most common and important among the various environmental stresses that limit the amount of crop and forest inputs that can be achieved to achieve their genetic potential. About one-third of the world's land belongs to the arid and semi-arid regions, covering more than 60 countries and territories. Most other parts of the country are also subject to cyclical or unpredictable droughts. Less crops and trees due to drought stress