什麼是楊樹紅心病？

楊樹紅心病是普遍發生、侵qin害hai嚴yan重zhong的de一yi種zhong病bing害hai
，而er且qie幾ji乎hu所suo有you楊yang樹shu品pin種zhong均jun遭zao侵qin害hai。該gai病bing自zi當dang年nian生sheng扡qian插cha苗miao到dao大da樹shu均jun能neng發fa生sheng
，紅hong心xin主zhu要yao發fa生sheng在zai主zhu幹gan的de髓sui心xin和he木mu質zhi部bu，隨sui樹shu齡ling增zeng大da，大da枝zhi的de木mu質zhi部bu也ye能neng發fa生sheng。

 

在楊樹muzhibudesuixinhexincaichuchenghesezhishenhesehuohonghese
，qibiansebianyuanchuchengshuizizhuang，jiejinbiancaibufenzeweijiankangdezhengchangbaisehuodanhuangse。bujinmuzhibubianse
，qieliuchujuchouweideyeti。

 

楊樹紅hong心xin部bu分fen從cong樹shu幹gan基ji部bu向xiang上shang逐zhu漸jian減jian少shao，尤you其qi是shi幼you樹shu僅jin發fa生sheng在zai中zhong下xia部bu
，梢shao部bu尚shang未wei顯xian示shi。當dang年nian生sheng扡qian插cha苗miao的de症zheng狀zhuang主zhu要yao發fa生sheng在zai苗miao木mu的de髓sui心xin處chu，且qie水shui漬zi狀zhuang邊bian緣yuan不bu甚shen明ming顯xian。

 

jiangsuchangzhihongyuanlinshizhuanyedelvhuamiaomuzhongzhijidi
，changnianchushouyangshu，haiyoudibeicaohua，lvhuaqiulei，libamiao
，huaguanmu，qiaomudenggeleilvhuapinzhong，guigeqiquan，shuliangchongzu
，shuxingyoumei
，cunhuolvgao

，zhiliangyou。benmiaomuhuahuichanpinshiyingxingqiang
，yichenghuo，chenghuolvjigao，erqie
，benpumiaomuyuanxiaoquanguogeshengshidiqu。zaichangzhihongyuanlinyoudaliangdeyangshuxianhuo，youxuyaogoumaiyangshuheqitalvhuamiaomudepengyoukeyilianxibenjidi：--