文章摘要
Ef f ect sofhi gh ni t rogen and m agnes i um ,boron def i ci encyon SPAD and m i neralnut ri ent sofwi nt erpot at o
  
DOI:
Author NameAffiliation
官利兰 1、伏广农 1、徐鹏举 2、程 根 1、江浩翔 1、李旭辰 1、张新明 1. 华南农业大学资源环境学院、广东 广州 5106422.华南农业大学园艺学院、广东 广州 510642 
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Abstract:
      Thr ough t he sand cul t ur e pot exper i ment 袁usi ng compl et e sol ut i on as t he cont r ol , l eaves SPAD val ue, mi ner alnut r i entst at usofl eaves,st emsand aer i alpar tofpot at o and t he r el at i onshi p bet ween l eavesSPAD val ue and l eaves ni t r ogen cont entunderhi gh ni t r ogen and magnes i um,bor on def i ci ency condi t i on wer e anal yzed t o opt i mi ze wi nt er pot at o nut r i t i on di agnosi sand bal ance f er t i l i zat i on t echni que.The r esul t sshowed t hatt he l eaves SPAD val ue underhi gh ni t r ogen was hi gher t han t hat under compl et e sol ut i on. The l eaves SPAD val ue and ni t r ogen cont ent had si gni f i cant posi t i ve cor r el at i on,especi al l y t he t op 3 r d l eaf .The ni t r ogen cont ent s ofl eaves,st ems,aer i alpar tand under gr ound par tofpot at o under hi gh ni t r ogen and magnesi um bor on def i ci ency condi t i on wer e hi gher t han t heos e under compl et e sol ut i on. M agnesi um decr eased among l eaves and aer i alpar tofpot at o.M odi f i ed di agnosi s and r ecommendat i on i nt egr at ed syst em ( M -DRI S)di scover ed t hatni t r ogen was r el at i vel y hi gher and magnesi um was r el at i vel y l ower f or hi gh ni t r ogen and l ow magnesi um,bor on t r eat ment s.The nut r i enti mbal ance i ndexes wer e hi gher ;nut r i ent s wer e mor e i mbal anced,par t i cul ar l y i n l eaves and aer i al par t sampl es. Ther ef or e, l eaves SPAD val ue combi ned wi t h M -DRI S coul d be mor e sci ent i f i c and compr ehensi ve f orni t r ogen di agnosi sand r ecommendat i on on wi nt erpot at o.
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