生长与发育是作物个体生活史上两种不同的现象。生长是作物个体或它的器官从小到大,从少到多,从轻到重的数量增长过程;发育则是作物个体新器官的形成和产生过程,即质的变化。作物从种到收,基本上可分为营养生长和生殖生长两个生育阶段。通常把营养器官(根、茎、叶)的生长称为营养生长,或简称生长;把生殖器官的分化和形成,(包括花芽分化、花器官的 Growth and development are two different phenomena in the history of individual crops. Growth is the process of increasing the number of individuals or their organs from small to large, from less to more, from light to heavy. Development is the process of the formation and production of new organs of the crop, that is, changes in quality. Crops from harvest to harvest, basically can be divided into two stages of vegetative growth and reproductive growth. The growth of vegetative organs (roots, stems, leaves) is usually called vegetative growth or simply growth; the division and formation of reproductive organs (including flower bud differentiation, floral organ