池杉生长快、材质好、抗性强,引种杭州20年生,高16米,胸径37厘米,又由于它耐水湿,为四旁和水网地区绿化的优良树种。近两年来我们开展了池杉育苗试验,现将初步结果简报如下。 池杉苗期生长规律 1973年开始播种育苗试验,纯种子千粒重为74—118克,发芽率平均35％左右,种子 Ipomoea fast growth, good material, strong resistance, the introduction of Hangzhou 20 years old, 16 meters high, 37 cm in diameter, but also because of its wet and water, for the four sides and water network afforestation fine tree species. In the past two years we conducted a pond fir nursery test, the initial results are summarized below. Seedling growth rules of Ipomoea in 1973 began seedling nursery trials, the pure seed weight of 74-118 grams, the germination rate of about 35% on average, the seeds