四人斗地主牡丹为落叶小灌木，性喜凉惧热，喜燥恶湿，喜光照，稍耐荫。牡丹的花期，在中原地区一般为4月中下旬，在冷凉地区花期推迟，有的延迟至6月份。花后，牡丹的生长发育进入了又一个非常重要的阶段。牡丹花芽分化，从5

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