引种的规律与试种一、引种的一般规律根据气候相似论和作物生态地理学的观点,纬度相近的东西地区之间比经度相近而纬度不同的南北地区之间的引种有较大的成功可能性。这主要由于温度和日照是随着纬度高低而变化的。水分也有一定程度的相关,但不完全决定于纬度。地处北半球的我国,在高纬度的北方,冬季温度低,夏季日照长;在低纬度的南方则相反,冬季温度高,夏季日照短。长日照作物,如冬小麦,原产于北方的品种向南引,由于不能满足在阶段发育中对低温和长 The introduction of the law and test a species, the introduction of the general law According to the theory of climate similarity and crop ecophysiology point of view, similar latitude between the east and west than the longitude and latitude between different regions of North and South have greater success may be Sex. This is mainly due to changes in temperature and sunshine with latitude and longitude. Moisture is also somewhat related, but not entirely dependent on latitude. In the northern hemisphere, in northern China at high latitudes, the temperature in winter is low and the summer sunshine is long. In the south at low latitudes, on the contrary, the temperature in winter is high and the sunshine in summer is short. Long-day crops, such as winter wheat, native to the north of the species cited south, due to the inability to meet the stage of development of low temperature and long