栽培水稻欲求高产,必须最有效地利用地力与光能。研究水稻光合器官的发育动态,掌握稻叶的生长规律和高产长相,根据叶龄进行栽培测报,可以有助于实现对光能与地力的有效利用。其理由:第一,水稻一生有相对稳定的叶片数,叶龄能准确地表示水稻的生育进程。第二,根、茎、叶、穗的发育有一定的同步关系,知此而识彼。第 For high yield rice cultivation, we must make the most efficient use of soil fertility and light energy. Studying the development of photosynthetic organs in rice, mastering the growth law and high-yielding phase of rice leaves, and carrying out cultivation and measuring according to leaf age can contribute to the effective utilization of light energy and soil fertility. The reason: First, there is a relatively stable number of leaves throughout the life of rice, leaf age can accurately represent the fertility of rice. Second, the root, stem, leaf, spike development has a certain synchronization relationship, know this. No.