作物品种从一个地区引入另一个地区,受多种因素的影响,其中包括气候条件、耕作制度、栽培水平及病虫害等因素。但引种成功与否,首先取决于引入品种在生育期方面是否符合当地自然条件及耕作栽培制度的要求。只有生育期适宜的品种,才能进一步鉴定在生产中的利用价值。大豆是短日照作物,对光照长度的反应很敏感,每一品种的适应范围是比较狭窄的,受生育期的限制很大。因而在大豆引种工作中,掌握各国不同 The introduction of crop varieties from one area to another is influenced by a number of factors, including climatic conditions, farming systems, cultivation levels and pests and diseases. However, the success or failure of the introduction depends firstly on whether the introduced varieties meet the requirements of local natural conditions and cultivation and cultivation systems in terms of their growth period. Only the appropriate breeding varieties, in order to further identify the value of the use of production. Soybeans are short-day crops that are sensitive to the length of the light, and the range of adaptation for each variety is relatively narrow, limited by the period of growth. Therefore, in the introduction of soybeans, master the different countries