抄録
Experiments were carried out in 1952, 1953 and 1955 to elucidate relations between stamping and pruning of blades of wheat before a hard winter and the growth and yield of wheat, at elevation of 1, 300 meters. The results obtained were as fellows: 1. Twice or three times stamping of wheat before a hard winter promoted the emergence of tillers and increased dry weight percentage, total sugar content, amount of roots and cold resistance. Moreover it lessend decrease of sugar content after winter, and it incfeased the yield by 10 % compared with the no stamped wheat. But there were not such differences in warm winter as cold winter. And the six times stamping was injurious to the growth and yield of wheat. 2. Pruning of blades not only stoped development of tillers and growth of roots but also it decreased dry weight, sugar content and cold resistance. Nevertheless at early spring, sugar content of pruned wheat were more than that of no pruned. Pruned wheat yielded less and beared small grains. These differences were diminished concerning cold resistant varieties and when it was not so cold in winter.
