白玉蘭花朵少,杆子黑是怎麼回事?
白玉蘭喜歡疏鬆通氣,排水性能好的微酸性土壤,問:白bai玉yu蘭lan去qu年nian葉ye片pian掉diao光guang了le,今jin年nian雖sui然ran已yi經jing長chang葉ye開kai花hua,但dan是shi葉ye片pian和he花hua朵duo都dou少shao,說shuo明ming植zhi株zhu還hai沒mei有you完wan全quan恢hui複fu,現xian在zai莖jing杆gan又you黑hei了le,首shou先xian要yao考kao慮lv的de就jiu是shi土tu壤rang問wen題ti,土tu壤rang板ban結jie不bu透tou氣qi,造zao成cheng根gen係xi呼hu吸xi不bu暢chang,所suo以yi地di上shang部bu分fen枝zhi葉ye生sheng長chang不bu良liang。
解決方法:觀(guan)察(cha)一(yi)下(xia)盆(pen)土(tu),如(ru)果(guo)是(shi)盆(pen)土(tu)板(ban)結(jie)不(bu)透(tou)氣(qi),建(jian)議(yi)給(gei)植(zhi)株(zhu)換(huan)土(tu),如(ru)果(guo)花(hua)盆(pen)過(guo)小(xiao),同(tong)時(shi)更(geng)換(huan)大(da)一(yi)號(hao)的(de)花(hua)盆(pen)。並(bing)在(zai)土(tu)壤(rang)中(zhong)施(shi)入(ru)硫(liu)酸(suan)亞(ya)鐵(tie)溶(rong)液(ye),或(huo)者(zhe)加(jia)入(ru)酸(suan)性(xing)腐(fu)葉(ye)土(tu) ,使土壤呈微酸性。

白玉蘭能短時間耐—20度的低溫天氣,溫度在0~35度之間植株可以正常生長,但是要想讓植株達到最佳狀態,要把溫度控製在20duzuoyou。qunianyulanyepiandiaoguangle,kenengshiwenduguodiyinqide。chunjideqiwenbuwending,ruguojizaobahuapenyirushiwai,yudaoxiayujiangwentianqi,zhizhujiuhuishoudongdaozhiganzifahei。

解決方法:要把白玉蘭盆栽移栽陽台上養護,等室外溫度穩定之後再移出室外。
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