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我在第一次教达尔文主义基础课,讲到植物阶段发育理论时,要先分析植物的生长与发育的不同现象.学生对这两种现象的意义,很难彻底体会,再讲春化价段与光照价段,没有实验证明,同学们对生物生长发育的规律也是不易透澈的。根据这种情况,在第二次教植物阶段发育理论时(1954年春)我就设法使同学作栽培实验。可是我校正在市区中心,校舍过小,找不到小块土地作栽培区;于是利用花盆作栽培.天津附近找不到纯种多小麦,于是用白菜作春化及光照实验。方法很简单:先行春化,选一些白菜种子,放烧杯
When I first taught the basic course of Darwinism and when I talked about the stage developmental theory of plants, I first analyzed the different phenomena of plant growth and development. The significance of these two phenomena to students is hard to fully understand. With the light price, there is no experiment to prove that students are not easy to understand the law of biological growth and development. Under such circumstances, I managed to make my classmates cultivate experiments when I first taught the theory of plant stage development (Spring 1954). But my school is in the downtown area, school is too small, can not find plots of land for cultivation area; so use pots for cultivation .Tianjin can not find purebred wheat, so cabbage for vernalization and light experiments. The method is very simple: first vernalization, pick some cabbage seeds, put a beaker