筆者在壽光市古城街道、稻田鎮等西紅柿種植區采訪時,發現有些菜農為防止粉虱入侵傳播TY病毒病,一直沒有對苗期的西紅柿進行放風,導致棚內最高溫度達到35℃左右,造成棚內西紅柿生長不良。筆者認為,這種做法是非常危險的。
首先,高溫會影響西紅柿的花芽分化。從西紅柿特性來看,它喜好涼爽幹燥的氣候,溫度在20℃~25℃時,最有利於西紅柿的生長,如果不進行通風,棚內溫度超過35℃,jiuhuiduizhizhuzaochenghendadeshanghai,youqishixianzaideduoshuxihongshiyoumiaozhengchuyuhuaqi,gaowenhuiyingxiangxihongshihuayadefenhua,daozhipengneixihongshijixinghuajijixingguozengduo。
qici,yinweipengwengao,biaocengdiwentishengxunsu,zheyangzaijiaoshuishiyinshuiwenjiaodi,yudiwenchajuda,jiuhuishixiazhajiaoqiandexihongshigenxishoushang,yingxianggenxiduikuangzhiyuansudexishou,daozhipengneixihongshishengchangbuliang,yepianhuanghuayanzhong。
再次,不進行通風,棚內空氣不流通,尤其在澆水後空氣相對濕度超過100%,yepiantongguozhengtengzuoyongjiangdizishenwendudenenglibianruo,genxixishoudeshuifenjikuangzhiyuansuyebunengjieshuifenyunsongdaoyepianshang,daozhiyepianzaigaowenxiayingyangxiaohaoguoda,yehuishiyepianchuxianhuanghua。
因此,預防病毒病不放風的方法是行不通的。菜農可以在大棚的上下通風口都安裝60目mu的de防fang蟲chong網wang,預yu防fang帶dai毒du害hai蟲chong進jin入ru棚peng中zhong傳chuan播bo。再zai者zhe現xian在zai外wai界jie的de溫wen度du還hai很hen低di,棚peng外wai沒mei有you遷qian飛fei的de粉fen虱shi等deng害hai蟲chong,因yin此ci在zai放fang風feng時shi傳chuan毒du害hai蟲chong並bing不bu能neng通tong過guo放fang風feng口kou進jin入ru大da棚peng。
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