近30年来由于农业灌水不足,能源成本上涨,世界人口猛增,到本世纪末能否生产出60多亿人口所需要的农产品,国外有许多人表示怀疑和不安,甚至预言饥饿的阴影又将在地平线上浮现。也有人认为目前世界灌溉面积仅占全部耕地面积的15.8%却提供了占 In the past 30 years, due to insufficient agricultural irrigation, rising energy costs and a sharp increase in the world’s population, it is not possible to produce the agricultural products needed by more than 6 billion people by the end of this century. Many people in other countries are skeptical and upset that even the shadow of hunger will be predicted The horizon appears. Some people think that the current irrigated area in the world accounts for only 15.8% of the total area of ​​cultivated land but provides