母树黄化处理EYellowing treatment of mother bush]用覆盖遮光方法促使茶树芽叶同化率和叶绿素含量降低,从而使叶片变黄的农艺措施。母树经黄化处理后,可以使插穗提早发根,促进根系发育,从而提高扦插成活率。在母树新梢长到一芽二三叶时,于茶丛上方用黑色塑料薄膜或稻草覆盖。覆盖物成弧状,高出茶蓬面30厘米,离地20厘米以下的茶丛不覆盖。经过2~3周遮光后,撤除覆盖物,再经2~3周,即可剪穗扦插。
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