一、生长与发育的概念在作物整个生活史中,所谓生长,是指器官或整个植株体积的持继增大,并包括原生质数量不断增多的过程(量的增加)。作物从营养器官(根、茎、叶)分化为生殖器官(花、果)的过程,称为发育(质的转变)。在生产上,作物生长与发育的表现常有三种情况:1、生长良好,发育正常。表现为植株健壮,开花及时,结实良好,收成较好。说 I. GROWTH AND DEVELOPMENT CONCEPTS Throughout the life cycle of a crop, so-called growth refers to the continuing increase in the volume of an organ or the entire plant and includes the process of increasing the quantity of the parental biomass. The process by which plants differentiate from vegetative organs (roots, stems, leaves) into reproductive organs (flowers, fruits) is called development (qualitative transformation). In production, the performance of crop growth and development often have three situations: 1, good growth, normal development. The performance of robust plants, flowering time, good, good harvest. Say