辣椒细菌性叶斑病是啥原因造成的

  • 色斑产生的原因
辣椒细菌性叶斑病是啥原因造成的
最佳答案(优质答案):<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p>放线就是把导线沿着电杆两侧放好,为把导线挂在横担上做好准备。常用放线方法有以下几种(图7-28):</p><p><imgclass scrollloading="scrollLoading" src="http://47.94.224.236/baidu/nongcundiangongsyjsbwbd/19787109166851010001_0244_1.jpg"></imgclass></p><p>图7-28几种放线方法</p><p>(a)用放线架放线(b)用木架放线(c)滑轮放线</p><p>1.地坑2.地面3.线盘</p><p>(1)用手放线</p><p>这种方法适合导线较细、线路较短的情况。放线时,放线人员把小捆导线挂在胳臂上,把线头固定在线路起端的电杆上,沿线路走,并用另一只手一圈圈把导线放出来。</p><p>(2)用人力、畜力或拖拉机、汽车等作为放线的牵引动力导线有盘的可用放线架放线,也可用一铁棍穿入线盘中心孔,然后架起。</p><p>放线时为了防止磨伤导线,可以在横担上安装滑轮,这样放线速度既快又省力。放线时应注意导线不得有硬弯、扭曲、松脱、破股、擦伤、断股等缺陷。架放线时,线盘应有专人看管,并且和放线人员保持联系。放线架上应有制动装置,线路跨越公路或通航河流时,应派人在公路、河流两侧看守。线路跨越通信线或广播线时,应预先和有关部门联系。当导线跨越铁路、公路、通航河道和重要通信线时,不应有接头。</p><div class="wgt-best-mask"> <div class="wgt-answers-showbtn"><span class="wgt-best-arrowdown"></span> </div> </div> 辣椒细菌性叶斑病, 主要为害叶片,成株叶片发病,初呈黄绿色不规则水浸状小斑点,边缘带黄色晕圈。叶缘、叶尖变黄、干枯脱落。扩大后变为红褐色或深褐色至铁锈色,病斑膜质,大小不等。干燥时,病斑多呈红褐色。 可以用链霉素,叶枯唑,辛菌胺,中生菌素,噻菌铜,噻森铜,喹啉铜,氯溴异氰尿酸, 多粘类芽孢杆菌 交替使用加磷酸二氢钾喷雾,间隔5天在连续喷施2到3次。苏薇洁 - 副主任医师 | 上海交通大学医学院附属第九人民医院整复外科

6个回答

<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p>放线就♡♡♡♡♡♡是把导线沿着电杆两侧放好为把导线挂在横担上做好准备¥¥¥¥¥¥常用放线方法有以下几种(图7-28):</p><p><imgclass scrollloading="scrollLoading" src="http://47.94.224.236/baidu/nongcundiangongsyjsbwbd/19787109166851010001_0244_1.jpg"></imgclass></p><p>图7-28几种放线方法</p><p>(a)用放线架放线(b)用木架放线(c)滑轮放线</p><p>1.地坑2.地面3.线盘</p><p>(1)用手放线</p><p>这种方法适合导线较细、线路较短——的情况¥¥¥¥¥¥放线时放线人员把小捆导线挂在胳臂上把线头固定在线路起端——的电杆上沿线路走并用另一只手一圈圈把导线放出来¥¥¥¥¥¥</p><p>(2)用人力、畜力或拖拉机、汽车等作为放线——的牵引动力导线有盘——的可用放线架放线也可用一铁棍穿入线盘中心孔然后架起¥¥¥¥¥¥</p><p>放线时为了防止磨伤导线可以在横担上安装滑轮这样放线速度既快又省力¥¥¥¥¥¥放线时应注意导线不得有硬弯、扭曲、松脱、破股、擦伤、断股等缺陷¥¥¥¥¥¥架放线时线盘应有专人看管并且和放线人员保持联系¥¥¥¥¥¥放线架上应有制动装置线路跨越公路或通航河流时应派人在公路、河流两侧看守¥¥¥¥¥¥线路跨越通信线或广播线时应预先和有关部门联系¥¥¥¥¥¥当导线跨越铁路、公路、通航河道和重要通信线时不应有接头¥¥¥¥¥¥</p>

放线就是把导线沿着电杆两侧放好,为把导线挂在横担上做好准备。常用放线方法有以下几种(图7-28):

图7-28几种放线方法

(a)用放线架放线(b)用木架放线(c)滑轮放线

1.地坑2.地面3.线盘

(1)用手放线

这种方法适合导线较细、线路较短的情况。放线时,放线人员把小捆导线挂在胳臂上,把线头固定在线路起端的电杆上,沿线路走,并用另一只手一圈圈把导线放出来。

(2)用人力、畜力或拖拉机、汽车等作为放线的牵引动力导线有盘的可用放线架放线,也可用一铁棍穿入线盘中心孔,然后架起。

放线时为了防止磨伤导线,可以在横担上安装滑轮,这样放线速度既快又省力。放线时应注意导线不得有硬弯、扭曲、松脱、破股、擦伤、断股等缺陷。架放线时,线盘应有专人看管,并且和放线人员保持联系。放线架上应有制动装置,线路跨越公路或通航河流时,应派人在公路、河流两侧看守。线路跨越通信线或广播线时,应预先和有关部门联系。当导线跨越铁路、公路、通航河道和重要通信线时,不应有接头。

刘紫薇-上海第九人民医院整复外科 - 主治医师|2019-10-02 06:16
<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p>辣椒细菌性叶斑病——的防治措施有:①农业措施¥¥¥¥¥¥避免连作采用高畦栽培覆盖地膜¥¥¥¥¥¥雨季注意排水避免大水漫灌¥¥¥¥¥¥收获后及时清除病残体或深翻¥¥¥¥¥¥②种子消毒¥¥¥¥¥¥播前用种子重量0.3%——的50%琥胶肥酸铜可湿性粉剂或50%敌克松可湿性粉剂或其他杀菌剂拌种¥¥¥¥¥¥③药剂防治¥¥¥¥¥¥发病初期喷50%琥胶肥酸铜可湿性粉剂500倍液或14%络氨铜水剂300倍液或77%氢氧化铜可湿性微粒粉剂400~500倍液或72%农用链霉素4000倍液每隔7~10天喷1次连续防治2~3次¥¥¥¥¥¥</p>

辣椒细菌性叶斑病的防治措施有:①农业措施。避免连作,采用高畦栽培,覆盖地膜。雨季注意排水,避免大水漫灌。收获后及时清除病残体或深翻。②种子消毒。播前用种子重量0.3%的50%琥胶肥酸铜可湿性粉剂或50%敌克松可湿性粉剂或其他杀菌剂拌种。③药剂防治。发病初期喷50%琥胶肥酸铜可湿性粉剂500倍液,或14%络氨铜水剂300倍液,或77%氢氧化铜可湿性微粒粉剂400~500倍液,或72%农用链霉素4000倍液,每隔7~10天喷1次,连续防治2~3次。

刘紫薇-上海第九人民医院整复外科 - 主治医师|2019-10-02 06:16
<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p>防治方法:①因地制宜地选育抗病品种¥¥¥¥¥¥②播前种子消毒(用种子重量0.3%——的50%琥珀肥酸铜可湿性粉剂或20%喹菌酮可湿性粉剂拌种)¥¥¥¥¥¥③清洁田园¥¥¥¥¥¥收获后及时清除病残体并深耕翻土在水源方便——的地方宜引水泡田一段时间(约30天或更长)¥¥¥¥¥¥④及时喷药控病¥¥¥¥¥¥在常发病——的地方或田块喷药防病应在发病前开始进行除参照辣椒及甜椒疮痂病——的防治用药外还可喷施50%靠山水分散粒剂(氢氧化铜)600~700倍液或50%甲羧</p><p><imgclass f-12="f-12" f-light-gray="f-light-gray" info="info" line="line" mb-5="mb-5" mt-10="mt-10" scrollloading="scrollLoading" src="http://47.94.224.236/baidu/lajiaojishu100w/19787109132801030001_0091_1.gif</p><p>水剂1000~1500倍液2~3次隔7~15天1次前密后疏¥¥¥¥¥¥</p> </div> <div class="> <div class="wgt-answers-operator f-aid"> <img class="wgt-answers-operator-shadow" 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防治方法:①因地制宜地选育抗病品种。②播前种子消毒(用种子重量0.3%的50%琥珀肥酸铜可湿性粉剂或20%喹菌酮可湿性粉剂拌种)。③清洁田园。收获后及时清除病残体并深耕翻土,在水源方便的地方宜引水泡田一段时间(约30天或更长)。④及时喷药控病。在常发病的地方或田块,喷药防病应在发病前开始进行,除参照辣椒及甜椒疮痂病的防治用药外,还可喷施50%靠山水分散粒剂(氢氧化铜)600~700倍液,或50%甲羧

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刘紫薇-上海第九人民医院整复外科 - 主治医师|2019-10-02 06:16
<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p>辣椒细菌性叶斑病主要为害叶片成株期叶片发病初呈黄绿色不规则小斑点扩大后变为红褐色、深褐色至铁锈色病斑病斑膜质大小不等¥¥¥¥¥¥病健部交界明显¥¥¥¥¥¥该病扩展速度很快严重时植株大部分叶片脱落¥¥¥¥¥¥</p>

辣椒细菌性叶斑病主要为害叶片,成株期叶片发病,初呈黄绿色不规则小斑点,扩大后变为红褐色、深褐色至铁锈色病斑,病斑膜质,大小不等。病健部交界明显。该病扩展速度很快,严重时植株大部分叶片脱落。

刘紫薇-上海第九人民医院整复外科 - 主治医师|2019-10-02 06:16
<div class="wgt-answers-mask"> <div class="wgt-answers-showbtn"><span class="wgt-answers-arrowdown"></span> </div> </div> <p>辣椒细菌性叶斑病主要为害叶片成株期叶片发病初呈黄绿色不规则小斑点扩大后变为红褐色、深褐色至铁锈色病斑病斑膜质大小不等¥¥¥¥¥¥病健部交界明显¥¥¥¥¥¥该病扩展速度很快严重时植株大部分叶片脱落¥¥¥¥¥¥</p>

辣椒细菌性叶斑病主要为害叶片,成株期叶片发病,初呈黄绿色不规则小斑点,扩大后变为红褐色、深褐色至铁锈色病斑,病斑膜质,大小不等。病健部交界明显。该病扩展速度很快,严重时植株大部分叶片脱落。

刘紫薇-上海第九人民医院整复外科 - 主治医师|2019-10-02 06:16