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作物种子播到大田以后,如果环境条件适宜,,就会发育成苗,并不断地与周围环境进行物质交换,使体积不断增大,重量不断增加,数量不断增多,这种现象通常称为生长。根、茎、叶等营养器官经过一定时期的生长之后,植株就要转入开花、结实,进而衰老、死亡。这种由营养生长转向开花、结实的生殖过程称为发育。由此可见,作物的生长是指营养器官增长的量变阶段,发育则是在量变的基础上生殖器官发生质变的过程。
After the sowing of the crop seed to the field, if the environmental conditions are right, it will develop into a seedling, and continue to exchange material with the surrounding environment, so that the volume increases, the weight is increasing, the increasing number, a phenomenon commonly referred to as growth . Roots, stems, leaves and other vegetative organs after a period of growth, the plant will turn into flowering, strong, and then aging and death. This shift from vegetative flowering, strong reproductive process known as development. Thus, the growth of crops refers to the growth of quantitative vegetative organs stage, the development is based on quantitative changes in reproductive organs qualitative change process.