閬ユ劅鎶�鏈笌搴旂敤 鈥衡�� 2011, Vol. 26 鈥衡�� Issue (2): 220-225.DOI: 10.11873/j.issn.1004-0323.2011.2.220

鈥� 鐮旂┒涓庡簲鐢� 鈥� 涓婁竴绡�    涓嬩竴绡�

鍏夎氨鏁版嵁鍙樻崲瀵圭帀绫虫爱绱犲惈閲忓弽婕旂簿搴︾殑褰卞搷

鐜嬬,鐧界敱璺�,鍗㈣壋涓�,鐜嬭春   

  1. (涓浗鍐滀笟绉戝闄㈠啘涓氳祫婧愪笌鍐滀笟鍖哄垝鐮旂┒鎵�鍐滀笟閮ㄤ綔鐗╄惀鍏讳笌鏂借偉閲嶇偣瀹為獙瀹�,鍖椾含100081)
  • 鏀剁鏃ユ湡:2010-09-30 淇洖鏃ユ湡:2010-11-29 鍑虹増鏃ユ湡:2011-04-20 鍙戝竷鏃ユ湡:2011-07-25
  • 閫氳浣滆��: 鐧界敱璺�(1961-),娌冲崡娓╁幙浜�,鐮旂┒鍛�,涓昏浠庝簨绮惧噯鍐滀笟鍜屽吇鍒嗙鐞嗙爺绌躲�侲mail:ylbai@caas.ac.cn銆�
  • 浣滆�呯畝浠�:鐜嬬(1978-),鐢�,娌冲崡鏂颁埂浜�,鍔╃悊鐮旂┒鍛�,涓昏浠庝簨浣滅墿钀ュ吇鍏夎氨淇℃伅鎻愬彇涓庡厜璋辫瘖鏂妧鏈爺绌躲�侲mail:lwang@caas.ac.cn銆�
  • 鍩洪噾璧勫姪:

    鍥藉鑷劧绉戝鍩洪噾椤圭洰(31000937),涓浗鍐滅闄㈠啘涓氳祫婧愪笌鍐滀笟鍖哄垝鐮旂┒鎵�涓ぎ绾у叕鐩婃�х鐮旈櫌鎵�鍩烘湰绉戠爺涓氬姟璐逛笓椤硅祫閲�(2009-6)璧勫姪銆�

Effect on Retrieval Precision for Corn N Content by Spectrum Data Transformation

WANG Lei,BAI You-lu,LU Yan-li,WANG He   

  1. (Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization,Institute of Agricultural顎僐esources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
  • Received:2010-09-30 Revised:2010-11-29 Online:2011-04-20 Published:2011-07-25

鎽樿锛�

閫氳繃瀵圭帀绫冲彾鐗囧厜璋辨暟鎹繘琛�6绉嶅彉鎹�,鍒嗘瀽浜嗗彉鎹㈠悗鐨勫厜璋卞�间笌鍙剁墖姘礌鍚噺鐨勭浉鍏冲叧绯�,鎺㈣浜�550 nm鍜�680 nm涓ゆ尝娈靛涓嶅悓褰㈠紡鍏夎氨鍙橀噺瀵规爱绱犲惈閲忓弽婕旂殑绮惧害銆傜粨鏋滆〃鏄�,寰垎澶勭悊(D(R)銆丏(log(R))鍜孌(N(R)))鏄捐憲鏀瑰彉浜嗘爱绱犲惈閲忎笌鍏夎氨鍊肩殑鐩稿叧鎬�,褰掍竴鍖�(N(R))娆′箣,瀵规暟澶勭悊鍑犱箮鏃犲彉鍖�(R涓巐og(R),N(R)顎婁笌log(N(R)))銆備笉鍚岀殑鍙樻崲褰㈠紡涔嬮棿,涓庢爱绱犲惈閲忕浉鍏虫�ч珮鐨�,鎵�寤虹珛鐨勫洖褰掓ā鍨嬬殑鍐冲畾绯绘暟杈冮珮,妯″瀷鐨勭簿搴︿篃杈冮珮銆傚湪娉㈡550 nm鍜�680 nm娉㈡澶�,鍏夎氨鏁版嵁鐨勫綊涓�鍖栧鏁板鐞�(log(N(R)))鑳芥樉钁楁彁楂樺洖褰掓ā鍨嬪姘礌鍚噺鐨勫弽婕旂簿搴︺��

鍏抽敭璇�: 鍙剁墖鍏夎氨鍙嶅皠鐜�, 鏁版嵁鍙樻崲, 姘礌, 鍙嶆紨绮惧害

Abstract:

It was analyzed that correlation between the transformed spectrum value and leaf nitrogen content,further more it was researched that retrieval precision for the nitrogen content with different form spectrum variables in 550nm and 680nm wave band by carrying on 6 kind of transformations to the corn leaf spectrum data.The results showed that differential form(D(R),D(Log(R))and D(N(R))) could significantly change the correlation between the nitrogen content and the spectrum value,and the normalized form(N(R))was next and the last was logarithm form(R and Log(R),N(R)and log(N(R))).In addition,determined coefficient of regression model was larger and the model precision was higher correspondingly with better correlation between different form spectrum variables and nitrogen content.In this study,the normalized logarithm form(log(N(R))) parameter of spectrum data could significantly improve the precision of regression model for retrieval nitrogen content in 550nm and 680nm wave band.

Key words:  , Leaf spectral reflectance, Data transformation, Nitrogen锛汻etrieval precision

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