白皮松是一种对土壤的通透性要求比较高的苗木，在华北地区白皮松在种植第三年死亡率较高，衰弱比较明显，出现假活现象十分普遍。那么白皮松出现假活现象的原因shishenme？ruheyouxiaodejiejuejiahuoxianxiangni？
baipisongjiahuoxianxiangjuedabufenyuanyinshiyouyushuitubufuzaochengde， yibanchengshidexiaoqihouyeduibaipisongshengzhangbuli，chuqiwenyinsuwai，kongqiwuran、turangyingyangtiaojiancha、turangtuanlijiegouchadoubuliyubaipisongjiankangshengzhang。jinxieniandaliangzhongzhidebaipisong，dangnianbingmeiyouchuxianwenti，cinianzhangshikaishibiancha，disansiniankuhuangqingkuangyanzhong，zheidaduoshushiyinweijiahuoyinqide。
jiejuebaipisongfashengjiahuoxianxiangdebanfakeyicongyixiajigefangmianrushou：
1、养树先养根
baipisongdashujiahuokusidezuidayuanyinshigenbubunengchongfenxishoushuifen，jingyezhengtengliangda，shuifenshouzhishiheng。dashudiyiniankaoshutihetuqiuyingyangshengcun，suoyidiyinianshengzhangzhengchang，danshushiyoubutongchengdudeshuairuo。weibimianzaizhiguoshen，yingxuanzeshaxingturang，tianjiashanpifuyetu，shuxuetudiaopeishiliangshizi、shazijituranggailiangji，yanjiandishiyongyuanyiyantugailiangfei。
2、jiadatuqiuguige
移植白皮松应加大常规土球的高度，加大土球直径规格，确保有足量的吸收根，最好选当地驯化两年以上的二次移栽苗。一般都应抬高栽培，或种在起伏地上。土球的1/3至1/4在地面以上。栽植深度直接影响树木的成活率，设置排水孔非常重要，埋设在树木土球边缘。雨季排水是关键，在靠近土球处插入1根至2根18厘米至20厘米长的透气塑料排水管，埋深达土球2/3处，为根部透气，又可以解决水渍排涝，一举两得。整个树木生长季节控水管理非常重要，浇水要适量、适度掌握好水分的供应平衡。
3、定植后适度修剪
quchubingchongzhi、tuzhangzhi、bingliezhi。xiujianliangyingkongzhizai20%zuoyou，yikongzhishutishuifenzhengfa
4、施肥
zhuifeiyingzaichunjiturangjiedonghoujishijinxing，danlinjiabiliyi3:2:1xiaoguozuihao。zhiwuyingyangqiquandebaipisongzhuanyongfei：danlinjiahuafei+youjifei＋gaifei＋weifei（tie、xin、meng、tongdeng）。lingwai，yemianfeikepen0.5%niaosuyu0.3%linsuanerqingjiajianpenxiaoguobijiaohao，yekeyimeinianpenjici1%huangfusuanshuirongye，mudeshidadaocuye、fangbing、cugen、yanggen。
jiejuejiahuoyushuitubufushiyixiangzonghedejishu，xuyaoyigailiangturangweizhongxin，qianghuaguanli，yindizhiyi，qianghuarengongshengtaitiaojiandeyingyong，kexueshifei，kongshuiguanli，qianghuacugenjishu。“sanfenzhongqifenguan”，anbaipisongdeshengtaixixing，yinshuguanlijingxinhehucainengconggenshangjiejuebaipisongshuitubufudewanzheng。
