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每一树种都有其特定的生长规律,这种规律不仅因种间差异而别,还因发育阶段、生长环境的不同而有所不同,我们如能依此规律,找出苗木在不同时期的生长规律,并针对其生长特点施以必要的措施,创造出有利于苗木加速生长或延长其速生期的外界条件,就会在育苗工作中取得事半功倍的效果。为进一步了解落叶松苗木的生长节律,我们在苗木生长季节,对大棚内一年生落叶松苗的各项生长指标进行了定期观测,并绘制出苗高、地径、主根长的生长节律图。高生长:全年可出现两个明显盛期,第一次出现在七月上旬,相隔20天后出现第二
Each species has its own specific growth pattern, this law not only because of differences between species do not, but also because of the different stages of development, growth environment is different, if we can according to this law to find seedlings in different periods Growth law, and in accordance with the characteristics of their growth to take the necessary measures to create conducive to the accelerated growth of seedlings or to extend its fast-growing external conditions, it will be a multiplier effect in nursery. In order to further understand the growth rhythm of larch seedlings, we observed the growth indexes of annual larch seedlings in the greenhouse during seedling growth season, and plotted the growth rhythm of seedling height, diameter and root length. High growth: there may be two distinct peak throughout the year, first appeared in early July, 20 days after the second appeared