一、坚持“两高一优”的引种原则做好新品种的引进推广,首先要以市场为导向,认真调查研究,了解当地的种植习惯和消费动向。其次,引进品种的经济性状和生长发育能适应当地的客观条件,较之当地主栽品种产量高、效益好。第三,应具有推广持续时间较长和推广面积较大的特点。二、了解引进品种对光照的要求任何一种植物生长发育与光照是密不可分的,但对光照强度的要求和光照时间长短的要求却各不一样,甚至同一类不同品种对光照的要求也有很大差异,尤其值得注意的是,有些植物对长短日照的要求较敏感。若将南方的一个短日照豇豆品种引入北 First, adhere to “two high and one excellent ” introduction principle Doing introduction and promotion of new varieties, we must first be market-oriented, careful investigation and study to understand the local planting habits and consumption trends. Second, the economic traits and growth of imported varieties can adapt to the local objective conditions, which are more productive and more effective than the local varieties. Thirdly, it should have the characteristics of prolonging the promotion time and promoting the larger area. Second, to understand the introduction of varieties of light requirements Any kind of plant growth and development and light are inextricably linked, but the requirements of light intensity and illumination requirements of the length of time is different, and even the same kind of different varieties of light requirements are also very Big difference, especially noteworthy is that some plants are more sensitive to the requirements of the length of the sunshine. If the south of a short-day varieties of cowpea introduced to the north