红皮云杉人工林生长节律

Growth Rythem of Picea koraiensis Plantation

红皮云杉人工林，≥０℃时芽展开，≥５℃时高生长开始。树高年生长量４４．９６ｃｍ，生长最速期在６月中旬，日平均高生长量１．７８ｃｍ。红皮云杉高生长天数为６１ｄ，属短速型树种。树高生长与积温、降水、日照相关紧密。直径生长６月中旬开始，７月上旬进入速生期，直径平均日生长量为０．０１ｃｍ，８月中旬直径停止生长，直径生长天数为５６ｄ，胸高直径年生长量为０．５２６ｃｍ。

For Picea koraiensis plantation, the bud begin to expand when the temperature is above 0℃. Height growth hegins when temperature is higher than or equal to 5℃. The annual height growth is 44.96cm. Fast growing period is in the middle of June, and the average height growth of the day is 1.78cm. Picea koraiensis belong to short growth peroid species, and its growth period is 61 days. There are close relationship among height growth, temperature accumulation and radation.