在东北、内蒙地区,樟子松球果每年九月末十月初成熟。成熟的球果鳞片将种子紧紧地裹在球果内,球果把与树枝的连结强度,并不因球果成熟而或减弱,而是牢固地挂在树梢上过冬。至翌年的四、五月份,大地解冻,气温回升,春风骤起,阵阵温暖的干风,吹拂球果,使球果的鳞片干燥变形向外张开,使球果开裂。于是夹在球果鳞片间的种子才能脱粒出来。 分析樟子松球果从成熟到开裂的自然过程,可以看出,在自然界中,干热风是促使球果开裂,种子脱粒的主要因素。然而我国普遍使用的球果调制方法,只强调温度的作 In the northeast, Inner Mongolia, Pinus sylvestris mature in late September and early October each year. The mature coniferous scales encapsulate the seed tightly in the cones, and the strength of the cones to join the branches is not due to the ripening or weakening of the cones, but rather to the tree treetops. In the following year, in April and May, the earth will thaw, the temperature will rise, the spring breeze rises, the warm wind blows and blows the cones so that the scales of the cones will be dried and deformed outwards to crack the cones. So the seeds caught in the scales of cones can thresh out. Analysis of Pinus sylvestris from ripe to cracking the natural process, we can see that in nature, dry hot wind is to promote the cracking of seeds, the main factor in threshing seeds. However, the commonly used cones modulation method in our country only emphasizes the temperature