‘青蘋果’zhuyu,youmingyuanyezhuyu,weizhuyukexiaozhuyushudeduonianshengchanglvcaobenzhiwu,qiyeseqingcui,zhuxingfengmanyoumei,naiyinxingqiang,kemeihuajiatingjushijibangongchangsuo,yekeyongyugezhonghuiyidebuzhizhuangshi,shenshourenmenqinglai。
北bei方fang溫wen室shi栽zai培pei圓yuan葉ye竹zhu芋yu,冬dong季ji發fa病bing率lv較jiao高gao,低di溫wen高gao濕shi是shi北bei方fang溫wen室shi冬dong季ji難nan以yi克ke服fu的de環huan境jing因yin素su,也ye是shi引yin發fa竹zhu芋yu病bing害hai的de主zhu要yao原yuan因yin,常chang見jian的de主zhu要yao病bing害hai有you以yi下xia兩liang種zhong。
一(yi)是(shi)低(di)溫(wen)凍(dong)害(hai),一(yi)種(zhong)是(shi)極(ji)端(duan)低(di)溫(wen)造(zao)成(cheng)葉(ye)片(pian)的(de)凍(dong)傷(shang)或(huo)整(zheng)株(zhu)凍(dong)死(si),這(zhe)種(zhong)極(ji)端(duan)情(qing)況(kuang)在(zai)生(sheng)產(chan)單(dan)位(wei)幾(ji)乎(hu)不(bu)會(hui)發(fa)生(sheng)。另(ling)一(yi)種(zhong)是(shi)由(you)於(yu)冬(dong)季(ji)夜(ye)溫(wen)多(duo)數(shu)維(wei)持(chi)在(zai)18℃以下,甚至時常出現10℃至15℃deqingkuang,zhezaibeifangzhuyushengchanqiyeyinggaihenchangjian。houzheduizhuyuzaochengdeshanghaibuhuilikexianxian,tadeshanghaishiyinxingde,dansuozaochengdesunshiqueshinanyijisuande,ruxiabuyepianchuxianbandian,yebianyuanchuxianyouzibandeng,daozhimaixiangbiancha,xiaoshouqiyanhoudeng。
二是炭疽病,冬季溫室內通風透光性差、濕度高、溫度低,易造成植株生長勢減弱、抗病力降低,這些都易誘發炭疽病及其他病害。
對這兩種病害的防治方法有以下幾點:一是管理人員應加強對溫度的控製,18℃的夜溫是必要的,白天應達到20℃至22℃;二是在溫室實施密封保溫措施的同時,注意中午的適當通風,最適濕度保持在65%至75%;三是保持良好的株行距,高密度帶來的是高病害的發生率,而不是高效益;四是及時剪除病葉,隔離病株;五是加強肥水管理,澆水時防止將盆土飛濺到葉麵上;六是冬季要特別注意棚頂滴水問題,應避免水珠滴到葉片上;七是可用煙劑防治,如百菌清、滅黴靈、腐黴利等。
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