水稻根系的发育与水稻地上部分的生长是相互联系的。水稻茎、叶、穗的生长所需要的水分和养料要靠根系来供应,而根系的发育所需要的养料要靠茎、叶制造来供给。它们是互相联系、互相贯通、互相渗透、互相依赖的。广大劳动人民在长期的生产实践中总结出“发苗先发根,壮苗先壮根,根壮苗早发”以及“养根保叶”等宝贵经验,就十分生动地说 The development of the rice root system is related to the growth of the aerial part of rice. Rice stems, leaves, spike growth of water and nutrients needed to rely on the roots to supply, and the development of the root of the nutrients needed to rely on stems and leaves made to supply. They are interrelated, interpenetrating, interpenetrating and interdependent. The vast majority of working people summed up in the long-term production practice “viviparous hair roots, strong roots and strong roots, strong roots and early seedlings,” and “preserving the leaves” and other precious experiences. It is very vivid to say