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2024年茶树主要病虫害防控技术方案

2024-03-22 08:32:10 来源:全国农业技术推广服务中心 阅读量:12375 评论

导读:受去冬今春多次低温寒潮等因素影响,茶饼病等茶树主要病害有加重发生趋势。

  【农机网 科技创新】 受去冬今春多次低温寒潮等因素影响,茶饼病等茶树主要病害有加重发生趋势。全国茶园发生的病虫害主要有茶小绿叶蝉、灰茶尺蠖、茶尺蠖、茶毛虫、茶蓟马、害螨、黑刺粉虱、角胸叶甲、茶网蝽、绿盲蝽以及茶饼病和炭疽病等。为有效控制2024年茶树主要病虫危害,确保茶叶生产和质量安全,全国农技中心特制定本方案。
 
  防控目标
 
  主要病虫防治处置率达到90%以上,总体防治效果达到80%以上,病虫危害损失率控制在8%以内,绿色防控覆盖率达到60%以上。
 
  防控策略
 
  采取以生态调控、农艺措施为基础,理化诱控和生物防治为重点,科学用药相辅助的茶树病虫绿色防控策略。优先采用健身栽培、免疫诱抗、性信息素诱捕、灯光诱杀、色板诱集和生物农药以及保护和利用天敌等绿色防控技术,科学使用高效低风险农药,推进统防统治与绿色防控融合,保障茶叶质量安全和茶园生态环境安全。
 
  防控措施
 
  (一)分区防控重点对象
 
  1.华南茶区。主要包括海南、云南南部、广东中南部、广西南部、福建东南部。重点防治茶小绿叶蝉、咖啡小爪螨、灰茶尺蠖、茶毛虫、角盲蝽、茶橙瘿螨、角胸叶甲、茶黄蓟马、黑刺粉虱、茶饼病和茶炭疽病,密切关注茶丽纹象甲、茶黑毒蛾、茶卷叶蛾类等病虫。
 
  2.西南茶区。主要包括云南中北部、西藏东南部、四川、贵州和重庆。重点防治茶小绿叶蝉、茶蓟马、害螨、绿盲蝽、黑刺粉虱、灰茶尺蠖(茶尺蠖)、茶毛虫、茶饼病和茶炭疽病,密切关注茶黑毒蛾、茶白星病等病虫。
 
  3.江南茶区。主要包括广东北部、广西北部、福建北部、浙江、江西、湖南、湖北东南和西部、安徽和江苏南部。重点防治茶小绿叶蝉、灰茶尺蠖、茶尺蠖、茶橙瘿螨、黑刺粉虱、茶毛虫、角胸叶甲、茶网蝽、茶炭疽病和茶饼病,密切关注茶跗线螨、茶黑毒蛾、茶蚜、茶丽纹象甲、茶小卷叶蛾、茶白星病等病虫。
 
  4.江北茶区。主要包括湖北北部、安徽北部、江苏北部、山东东南部、河南南部、陕西南部和甘肃陇南。重点防治茶小绿叶蝉、灰茶尺蠖、茶橙瘿螨、茶网蝽、绿盲蝽、茶毛虫、黑刺粉虱、茶饼病和茶炭疽病,密切关注茶蚜、茶细蛾等虫害。
 
  (二)主要病虫防控技术
 
  1.茶小绿叶蝉。维护茶园周边自然植被,间作显花草本和木本植物,秋冬季在园边适度自然留草,为蜘蛛类、寄生蜂类天敌提供庇护场所,增强生态控制潜能。生产季节,适时分批勤采,清除茶行间杂草,控制虫口基数。春茶结束修剪后,悬挂诱虫板可显著降低叶蝉第一峰虫口数量。防治药剂可选用桉油精、印楝素、香芹酚、茶皂素、藜芦胺、茚虫威、虫螨腈、双丙环虫酯等。
 
  2.灰茶尺蠖(茶尺蠖)。结合茶园秋季中耕施肥,翻耕土壤,降低土中越冬虫蛹的成活率。在灰茶尺蠖(茶尺蠖)常发茶园安装诱虫灯,羽化高峰期开灯诱杀成虫;在灰茶尺蠖(茶尺蠖)成虫羽化期,放置性信息素诱捕器诱杀雄虫。保护和利用茶尺蠖绒茧蜂、单白绵绒茧蜂、蜘蛛类等重要天敌。防治适期宜掌握在第1、2代或5、6代的低龄幼虫期。防治药剂可选用甘蓝夜蛾核型多角体病毒、金龟子绿僵菌CQMa421、苏云金杆菌、茶核·苏云金、短稳杆菌、苦参碱、高效氯氰菊酯等。
 
  3.茶毛虫。利用茶毛虫幼虫群集的习性,进行人工捕杀。在常发茶园安装诱虫灯,羽化高峰期开灯诱杀成虫;在茶毛虫成虫羽化期,放置性信息素诱捕器诱捕雄虫。防治适期掌握在低龄幼虫期。药剂防治可选用:甘蓝夜蛾核型多角体病毒、苏云金杆菌、短稳杆菌、苦参碱、联苯菊酯、溴氰菊酯、联苯·甲维盐等。
 
  4.茶橙瘿螨、茶跗线螨、咖啡小爪螨等茶树害螨适时分批勤采,带走部分成螨、卵、若螨。用石硫合剂或矿物油冬季封园。害螨发生高峰,可选用矿物油、藜芦胺等药剂进行防治。
 
  5.黑刺粉虱。加强茶园管理,疏枝清园,促进茶园通风透光以抑制其发生。越冬代成虫羽化始盛期,使用全降解诱虫板诱杀成虫。第1代幼虫孵化盛期,可喷施溴氰菊酯、联苯·噻虫嗪、联苯·噻虫啉等药剂。在越冬虫口偏高田块可用石硫合剂、矿物油等进行冬季封园。
 
  6.茶蓟马。适时分批勤采,恶化其营养条件和庇护场所,带走部分卵、若虫和成虫。发生高峰前,可用蓝色(茶棍蓟马)或黄绿色(茶黄蓟马)诱虫板诱杀成虫。防治药剂可选用印楝素、藜芦胺、矿物油等。
 
  7.茶角胸叶甲。冬季封园时施肥翻土,深度20公分,减少越冬幼虫基数。可在茶蓬内放置全降解黄板,每年5月上旬挂放1次,粘满及时更换。可选择使用球孢白僵菌、绿僵菌或苦参碱施药防治。发生严重茶园在成虫出土始盛期选用高效氯氰菊酯或茚虫威在防治其它害虫时进行兼治。
 
  8.茶网蝽。结合茶园冬季管理,检查摘除有卵叶,春季低龄若虫期摘除有虫叶,集中销毁。做好茶园疏枝,增进通风透光,抑制发生。可选用苦参碱、印楝素进行生物防治;严重发生时可结合吡虫啉或高效氯氰菊酯防治其他害虫时进行兼治。
 
  9绿盲蝽。清除蒿类杂草。可选用苦参碱、球孢白僵菌等进行生物防治。严重发生时可结合溴氰菊酯或高效氯氰菊酯防治其他害虫时进行兼治。
 
  10.茶饼病。适时分批勤采,选择适宜时期修剪,清除枯枝,改善茶园通风透光性。平衡施肥,增强茶树抗病能力。用石硫合剂冬季封园。在发病初期喷施补骨脂种子提取物、枯草芽孢杆菌、多抗霉素等药剂1—2次。
 
  11.茶炭疽病。新建茶园选种抗性的健壮种苗。平衡施肥以增强茶树抗病能力,及时剪除病枝,适时采摘。用石硫合剂冬季封园。在发病初期喷施苯醚甲环唑、啶氧菌酯、吡唑醚菌酯、百菌清等药剂1—2次。
 
  注意事项
 
  (一)选用在我国茶园登记使用的农药品种,生产出口茶叶的茶园应同时遵循产品输入国的要求慎重选择农药品种。
 
  (二)农药具体使用浓度、使用方法及安全间隔期等须仔细阅读产品标签和说明书。
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