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茶叶机械化采摘技术要点

2024-07-05 11:36:22 来源:重庆市农业机械化技术推广总站 阅读量:14911 评论

导读:当前正值我市夏秋茶生产高峰期,为降低夏秋茶生产成本、提高夏秋茶产量和质量,重庆市农业技术推广总站研究制定了茶叶机械化采摘技术要点。

  【农机网 科技创新】 当前正值我市夏秋茶生产高峰期,为降低夏秋茶生产成本、提高夏秋茶产量和质量,重庆市农业技术推广总站研究制定了茶叶机械化采摘技术要点。具体如下:
 
  01 选择适宜机采的无性系茶树良种
 
  目前广泛推广应用的茶叶采摘机械为往复切割式,对茶树芽叶没有识别性,并不适合所有茶树品种,而无性系茶树品种长势相对匀齐,可在一定程度上缓解茶叶采摘机械“一刀切”带来的弊端。因此,机械化采摘茶园应选择茶树品种纯度高、发芽整齐、发芽密度大、持嫩性较强、节间长、再生能力强及芽叶较为直立的茶树良种。
 
  02 选择适宜的茶园基地
 
  坡度在15°以下、土层深厚的平地和缓坡地(等高条植)茶园,坡度在15°~ 25°的等高梯地茶园可选用机械化方式采摘。土壤肥沃的平地、缓坡地(坡度小于15°)且生长能力较强的老茶园,可通过改土、改造树冠等措施,改造成机采茶园。零星分散、丛植茶园不适宜机械化采摘。
 
  03 选择适宜的采摘机具
 
  山地茶园行间窄、上下起伏大,为提高机械化采摘操作的灵活性,机械化采摘优质茶宜选用单人背负手提式采茶机,以采收大宗茶、出口茶为主的缓坡地和梯级等高茶园可选用双人担架式采茶机。
 
  04 机采茶园土壤肥培管理
 
  增施氮肥可以提高机采鲜叶的完整率和细嫩芽叶比例,增加采摘批次,提高机采鲜叶产量和质量?;刹柙敖ㄒ槊磕晔┓?次,用量按照每产100kg鲜叶施纯氮肥4 kg~5kg,分别于每年的10月、1月、5月、7~8月施入,用量分别为全年用量的40%、20%、20%、20%。
 
  05 机采茶园树冠培养
 
  树冠高度宜控制在80cm~90cm、树幅85%~90%、平型或弧型冠面。老茶园采用深修剪、重修剪和台刈等修剪技术进行改造,树冠培养参照幼龄茶园的定型修剪。每次机采后进行1次掸剪,平整树冠便于下次机采。
 
  06 选择适宜的开采标准
 
  按照不同茶产品采摘不同标准鲜叶,优质绿茶、红茶采摘一芽一、二叶,当标准新梢达到60%、芽叶平均高度约为4cm时,可进行机械化采摘;大宗绿茶、红茶采摘一芽二、三叶及其对夹叶,当标准新梢达到80%时,可进行机械化采摘。一般先以优质茶的标准采摘,再以大宗茶采摘方式将鲜叶全部采摘,全年采摘3~5批次。
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