水稻根系是吸收水养分的器官也是合成氨基酸和多种激素的场所，与地上部有密切的物质交流，相互依存。为了调控地上部生长，必须重视根系的研究。但是福根长在土中，密集成网，研究上存在很大困难。据计算，一株稻苗有几百条不定根，每条不定根又不断分枝，从而形成几万条各级 Rice root is the organ that absorbs water and nutrients and is also a place for the synthesis of amino acids and various hormones. It has close physical exchanges with the upper part and interdependence. In order to control the growth of aerial parts, we must pay attention to the research of root system. But Fukugan grows in the soil, dense network, there are great difficulties in the study. It is calculated that a rice seedling has hundreds of adventitious roots, each adventitious root and constantly branched to form tens of thousands of all levels