堅(jiān)持見花打頂,根據(jù)煙株長(zhǎng)勢(shì)合理留葉18~22片/株;打頂時(shí)期和留葉數(shù)量確定的依據(jù)是煙株長(zhǎng)勢(shì)和供肥情況。①對(duì)長(zhǎng)勢(shì)正常的田塊,于30%~50%煙株中心花開放時(shí),打除頂部短于15~20cm的葉片。②對(duì)長(zhǎng)勢(shì)偏旺的田塊,推遲打頂時(shí)期甚至盛花打 (共 176 字) [閱讀本文] >>
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 堅(jiān)持見花打頂,根據(jù)煙株長(zhǎng)勢(shì)合理留葉18~22片/株;打頂時(shí)期和留葉數(shù)量確定的依據(jù)是煙株長(zhǎng)勢(shì)和供肥情況。①對(duì)長(zhǎng)勢(shì)正常的田塊,于30%~50%煙株中心花開放時(shí),打除頂部短于15~20cm的葉片。②對(duì)長(zhǎng)勢(shì)偏旺的田塊,推遲打頂時(shí)期甚至盛花打 (共 176 字) [閱讀本文] >>