xiangjiaojingfubingzhuyaoweihaixiangjiaojiajing,shouhaijiajingchushichuxianshuizizhuangheban,zaichaoshitiaojianxiabingbanxunsufazhan,buduankuodachengheseshifubuguizezhuangdabankuai,bingzhujianxiangliganranjiankangjiajing。發病嚴重時病斑圍繞整個假莖,輸導組織壞死,香蕉水分、養分輸送中斷,造成葉片、假莖變黃枯死,嚴重影響香蕉的正常生長發育。該病以低窪、地下水位高、管理水平差、偏施氮肥、清園不善、fangzhibujishidejiaoyuanfabingyouweiyanzhong。yinci,weicujinxiangjiaojiankangshengchang,zengjiaxiangjiaodeyouxiaoqingye,tizaochouleiguaguo,tigaoxiangjiaochanlianghezhiliang。duixiangjiaojingfubingdefangzhixucongyoumiaoqizhuahao,qizhuyaofangzhiyaodianruxia:
一、加強蕉園管理
及時挖好蕉田四周和隔行大溝,降低地下水位,排除積水。培好蕉畦、蕉株,保持畦麵濕潤幹爽。抓好蕉畦的淺耕除草工作。施足有機肥,增施磷鉀肥。用0.3%磷酸二氫鉀加噴施寶、葉麵寶,或用高美施、核苷酸噴施,促進葉片光合作用,使葉片生長健壯,增強樹勢,減少發病。
二、qingchujiajingbingbanfaxianbingzhu,jishigechufabingjiaozhudekucanjiajing,gezhijiandaojiankangjiajingweizhi。zaijiankangjiajingshang,ruhaiyouxiaobufenbingban,keyongxiaodaobabingbanbufentichu。jizhongshenmaihuoshaohui,jianshaobingjunyuan。
三、塗藥防治
整理病株後,可用50%溶菌靈400倍液或70%甲基托布津500倍液混合黃泥拌成漿,或用1:1:10波爾多槳塗刷香蕉假莖,每隔10-15天塗一次,連用2-3次。並用25%神州綠1000倍液或77%可殺得1200倍液噴施假莖,並從葉柄分叉處將藥液灌入,防治效果明顯。