我们伟大的祖国,是世界上一个古老的农业国家,所以在很早以前,我国的农民便已经掌握发明了许多深有科学道理的耕作方法;同时在文化方面,我们的祖国也有着十分悠久的历史,因此在很远的时候,我国人民对于许多事物便已有了很好的观察和记载.对于春化,自然并不例外.所以苏联的斯托列托夫博士访问过我国的农村后亦曾经说道:“春化处理中国老解放区很早就有应用了.” Our great motherland is an ancient agricultural country in the world. Therefore, long ago, our peasants have mastered many scientific and profound farming methods. At the same time, our motherland also has a very long History, so at a very long time, our people have been very good for many things have been observed and documented for the vernal nature, of course, is no exception .So the Soviet Union Storretto visited the country after the rural and also Once said: “The vernalization of old liberated areas in China has long been applied.”