1.育种苏铁在遗宜条件下10来年树龄即可常年开花。关键是要有年平均约20℃以上的气温,即满足花芽分化所需的积温及促使分化所需的光照;适当控水,保持相对干燥;增施磷钾肥(以磷肥为最重要),控制氮肥,保持足够的平衡营养供给,无缺素干扰。苏铁雌雄异株,因气候条件差异可在4～7月间盛开,而人工栽 1. Breeding cycads in the conditions of the past 10 years of age can bloom all year round. The key is to have an average annual temperature of about 20 ℃ or more, that is, to meet the temperature required for flower bud differentiation and differentiation required to promote the light; appropriate water control, to maintain relatively dry; increase phosphorus and potassium fertilizer (phosphate is the most important) control Nitrogen fertilizer, to maintain adequate balance of nutrient supply, the lack of interference. Cycas dioecious, due to differences in climatic conditions in April to July in full bloom, and artificial planted