一、前言柳杉花的形成,常受温度影响,笔者曾连续实验结果证明:雄花在30℃左右,雌花在20℃左右,开始分化。1975年,在自然光条件下,用柳杉作试验,温度在30℃—20℃时,雄花大量分化,而雌花则分化很少。 I. Foreword The formation of cedar flowers, often affected by temperature, the author has continuous experimental results show that: male flowers at about 30 ℃, female flowers at about 20 ℃, began to differentiate. In 1975, under natural light conditions, with cedar as a test, the temperature at 30 ℃ -20 ℃, a large number of male flowers differentiate, while female flower differentiation is very small.