怎样使米兰生长健壮
内蒙古满洲里市王继德读者来信问：我家养了2株米兰，已有七八年，但总是枝条细长下垂、叶色发黄、开花不多。请问种养米兰应选用什么样的土壤和肥料？怎样促成其生长健壮？
答：你的米兰出现枝条细长、叶色发黄、开花不多等不正常现象，主要与光照不足，越冬室内温度偏高，土壤肥料管理不得法有关。要使其生长健壮，枝繁叶绿，花多香浓，建议从以下几个方面入手。
一是增加光照，在阳台或庭院中栽培，只要保持盆土湿润，经常给叶面喷水，除盛夏酷暑气温达32℃以上时，需在中午前后的4个至5个小时给予遮
阴外，一般情况下可以给予全光照。特别是在室内越冬期间，要将其搁放于阳光充足的窗前，使其多多接受光照。
二是越冬期间要保持适宜的室内温度，一般只要不低于5℃即可，最好维持在10℃左右，一旦超过12℃就会严重影响其休眠，会导致枝端萌发新的叶芽，不仅要耗费较多的养分，引起新梢细长瘦弱，春季出房后还会出现干梢。
三是栽培米兰要用通透良好、疏松肥沃的酸性沙壤土，你的米兰植株出现黄叶，可能与土壤的pH值不适宜有关，一般其pH值以保持在5.5至6.5之间比较合适。可在生长季节每半月浇施一次的稀薄肥液中，加入0.1％的硫酸亚铁粉末，可促成土壤呈酸性，避免叶片出现缺铁性黄化。植株孕蕾后，可每周喷施一次0.2％的磷酸二氢钾，可使其多多孕蕾开花。
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runescape gold!runescape gold!runescape gold!runescape gold!runescape gold!四是宜每年进行一次翻盆换土，时间最好在春季出房后新叶尚未长出之前，将植株从花盆中脱出后，剔去1／3的宿土，剪去腐烂坏死的根系，并对细长的枝条作适当的缩剪，换用新鲜肥沃的培养土栽好，置于阳光充足、通风良好的场所，使其能尽快恢复生长。另外，生长季节内为避免枝条细长，要注意摘心打顶，控制浇水和给予充足的光照。
