日本果樹新育法研究會會員竹下實,1949年至1950年曾經做過春化作用的試驗,第一次就得到很好的效果。他把黑麥的種子,經以低温的處理,其發芽率非常良好,處理過黑麥的生長和收成都很好,麥子也可由此得到優良的品種。可是,試驗和處理的方法,由於條件和程度的不同,其方法並不完全一樣,在試驗的過程中,當然還有尚待改進的缺點。正確的栽培方法,希望在 Takeshita Takeshita, a member of the Japanese Society for Research in Fruit Tree Nursing, first tested the vernalization effect from 1949 to 1950. The first result was very good. He put the seeds of rye, through the treatment of low temperature, the germination rate is very good, the growth and harvest of rye processed are good, wheat can also be excellent varieties. However, the methods of testing and handling are not exactly the same because of the different conditions and degrees. Of course, there are still some shortcomings to be improved during the testing. The correct cultivation methods, hope in