人类改造自然生态系,通过耕种的方法,开始获得粮食之后,已有1万多年了.其间野生型植物经人类不断改良,已进化为高产的近代栽培型作物.例如,现在栽培的水稻品种,较其原始状态的野生稻,干物生产力及产量均显著提高,在形态上亦大有变化.这些差异,系由于在栽培化的过程中,经过人类的努力,使其太阳能利用效率进一步提高所致. It has been more than 10,000 years since human beings transformed the natural ecosystem and started to obtain food through cultivation methods. In the meantime, wild-type plants have undergone continuous improvement by humans and have evolved into modern high-yielding cultivars. For example, cultivated rice varieties , Compared with their original state of wild rice, dry matter productivity and yield were significantly increased, also greatly changed in morphology, these differences, due to the cultivation process, through human efforts, to further improve the efficiency of solar energy utilization To