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1、山楂春季萌芽、展叶、开花等物候期兴隆县都早于隆化县,而以后随着气温、地温的回升和提高,二者差距逐步缩小,到夏季生长期基本一致,到秋季落叶等物候期兴隆又晚于隆化,所以,隆化山楂生长期较兴隆地区短约10～14天。2、山楂地上部、地下部各器官的生长发育与开花结实之间有着密切关系,地下部吸收根的发根数量,和生长长度与枝条长度、粗度、叶面积增大都在交替的进行,又地上部各器官的生长发育进程,也有加速、减缓和停止在交替地进行3、山楂树势,主要为结果枝、结果母枝的粗度与开花座果有正相关关系,即枝条粗度越粗座果率越高。4、山楂花芽分化期较其他苹果、桃等树种晚,且分化期长,到翌年开花期前约一个月才完成性器官的分化。
1, hawthorn spring budding, exhibition leaf, flowering and other phenophase Xinglong County are earlier than the Longhua County, and later with the temperature, ground temperature rise and increase, the gap between the two gradually reduced to basically the same as the summer growing season, to fall leaves The phenophase was booming and later than Longhua, so Longhua hawthorn growing area is shorter than the booming area about 10 to 14 days. There is a close relationship between the growth and development of each organ in aerial parts and underground parts of flowering hawthorn and flowering and fruiting. The number of roots and the growth length of roots and the growth of branch length, thickness and leaf area in underground part are all alternated. In addition, the growth and development of various organs in the upper and the upper part also accelerated, slowed down and stopped alternately. 3. The hawthorn potential was mainly the result of the branch. As a result, the thickness of the branch was positively correlated with the flowering fruit, The more coarse fruit rate higher. 4, Hawthorn flower bud differentiation than other apples, peaches and other tree species late, and the long differentiation period, about one month before the flowering period to complete the sex organs differentiation.