數(shù)字圖像技術在黃瓜氮素營養(yǎng)診斷上的應用研究

<p>&nbsp; &nbsp;宋述堯,教授,博士生導師。1982年 7月畢業(yè)于吉林農(nóng)業(yè)大學園藝系,1985年7月獲碩士學位,后留校任教至今。曾任園藝系副主任、?？蒲刑幪庨L,現(xiàn)任園藝學院院長,蔬菜學學科帶頭人。兼任中國園藝學會理事、吉林省農(nóng)學會常務理事、吉林省園藝學會副理事長。主要從事蔬菜學、設施園藝的教學與科研工作。主講研究生與本科生蔬菜栽培學、高級蔬菜生理學、設施園藝學等課程。發(fā)表學術論文60余篇,主編專著 2部。先后承擔國家、省級科研項目20余項,獲省科技進步二、三等獎4項。近年來先后擔任吉林省農(nóng)業(yè)跨世紀學科學術帶頭人 、吉林省跨世紀學科學術帶頭人 、吉林省跨世紀農(nóng)業(yè)科技骨干、農(nóng)業(yè)部豐收獎(吉林)評審專家、吉林省農(nóng)業(yè)綜合開發(fā)專家組專家、吉林省農(nóng)業(yè)科技首批專家顧問組專家。3m/ Û( Í! ¥¨ùî 宋述堯1 , 王秀峰2(1.吉林農(nóng)業(yè)大學園藝學院, 長春 130118;2.吉林省蔬菜花卉研究所,長春 130033)K 1:試驗設計了6種氮素水平處理溫室黃瓜,利用數(shù)碼相機獲取黃瓜冠層圖像,分析了不同供氮水平下黃瓜冠層圖像參數(shù)與施氮量、土壤無機氮(Nmin)和植株氮素營養(yǎng)指標之間的關系。結果表明:黃瓜冠層圖像G/(R+G+B)為診斷黃瓜結果期氮素營養(yǎng)狀況的適宜數(shù)字化參數(shù)。建立了評價黃瓜結果期氮素營養(yǎng)豐缺的冠層圖像數(shù)字化指標 G/(R +G+B)的量值標準和氮肥推薦標準。1oM:黃瓜;氮;數(shù)字圖像;營養(yǎng)診斷Ïms Ë|:TP391.41;S642.2 &nbsp; ÓDS M :A &nbsp; ÓcI|:1000-5684(2008)04-0460-06Diagnosis of N Status of Cucumber Using Digital ImageProcessing TechniqueSONG Shu-yao1, WANG Xiu-feng2(1.College of Horticulture , Jilin Agricultural University , Changchun 130118, China ;2.Institute ofVegetable Science of Jilin Province , Changchun 130033, China)Abstract:The digital pictures of the winter wheat canopy were obtained with a Canon digital camera in2004.The G/(R +G +B)ratio from the cucumber canopy was compared, to the Nmin concentration inthe soil,to the sap nitrate concentration in petiole , to the SPAD readings of leaves,and to the total N con-Á “: 8×v S/þ1 “(20000202-1)là ° ù:2008-06-10吉林農(nóng)業(yè)大學學報 2008,30(4):460 465 http :/ xuebao.jlau.edu.cnJournal of Jilin Agricultural University E-mail :jlndxb vip.sina.comDOI :10.13327 /j .j jlau.2008.04 .038centration.The results show significant inverse linear correlation between the G/(R +G+B)ratio andNmin in soil, sap nitrate concentration in petiole , total N, and SPAD readings at bearing fruit stage.G/(R +G+B)can be considered as an important indictor of N status in cucumber.Optimum N rate attop-dress was determined in growth stages.Key words:cucumber;nitrogen;digital image technique;N status diagnosis! ¡Û(Á V Ñv,Ü6rmÚ, 3Á 8¿Ñ g ¤ÚÁ 。Bt vÁ ug L= Æ 1Èwi Ú2 ,71g æ¨ q 10% 1 。V ¨gÇ9F 3Áî&#39;,® vÁ ÖÉ , H9? B 3 ÿHq0Ä、¹/ £ê ©B“¥ÌâÙ5。Û( µ²T ùÉ、 dòTô“ 0、 0g ï Ð¥ 3 Ø+,BW ¡³Qg ? ¡ 3ɳ p。Û( ÿ9 ¥40% 50%,yNÛ(g µ &nbsp;240 kg/hm2),Á MÄv。V3 £ ÜÛ(T L、Ô=¹ 3þ ¥YTable3.Effect of nitrogen levels on dry weight of fruits,shootsand biomassincucumber kg/hm2 NT LÄ×Economic yield(DW)Ô=Ä×Shoot weight(DW)¹ Ä×Biomass in shoot(DW)0 2 631a 2 936a 5 567a80 3 250b 3 728ab 6 978b160 3 515bc 4 204bc 7 718bc240 3 779c 4 316c 8 095c320 3 930c 4 404c 8 334c400 3 909c 5 055d 8 967cÔ=Ä×5 Û“g Æ 9FB°ï 6t ,¹ 9 3þ ¥MÄÐÔ=Ä×MÄ tv8M,º MÄl¿Ô=Ä×。VüV gÛ()¿ ÿ, Ù É Û(Ô=¥! 3É, æ¿Á Ö 2¥î。²( ù,160,240 kg/hm2 2ñ) Ø¥Û(Í!)¿È £ Ü, G/(R +G +B)´S¶¹0.391 0.413 ;400 kg/hm2) Ø5)¿Ñ ÿ, G/(R +G +B)´0.413 80 100È0.391 0.413 0.391 0.413 70 75V 0.388 0.397 0.429 80 100È0.416 0.429 0.415 0.427 60 70V 0.401 0.415 0.442 70 90È0.426 0.440 0.442 0.440 45 50V 0.417 0.426 0.461 50 80È0.447 0.459 0.447 0.461 25 30V 0.439 0.448 &lt;0.448 03 ) &nbsp;樱þ3ªm¥ 3Ä·SÉ ÍÐg¥ y Îwi, LÉ¥ýTK5 S¿ÖÜ、l ©vBTþ 3-6, 9 ,Û(© vTþ “ -Î7µ¡ 8, 10 。&#39; k ñÊ ! Û( Í¥V 3Ä·SG/(R +G+B)¥$ ,y ë ßNÛ(ö1 3â ù Í ¥3ªm S。Û(3ª 3m s;SÄ´G/(R +G +B)Ð ñ±é Í·SiA÷¥LµM11“,B² ÐJial ¥ùî²TBÁ 4 。 s;SÄ´G/(R +G +B)Ðr Nmin=cb Ö÷c ©±é Í·S¥M1ñKÚ, aT¹ ßN Í¥V·S。ÐI N 10 、 . 8 ùî²Tµ î,K aRI N Í¥3ªm G/B ,7 . 5B/(R +G+B)¹KD·S。ÕTþÕ Ë3ªm·S ¥BÁ, V ?ÐTþ= ËÐ+¥µsµ1。&#39; k Í £ Ü) Ø¥Û(Á 、 3þ 、r Nmin#©ç¥±é Í·S¹$,81=c¬Ab Ö÷ i、= s ÍNSPAD 、= Ë 、±é c 4Õ ÍZE¥²T,Åç ßNÛ(²( ù Í¥3ªm 3Ä·SG/(R +G+B)¥ ÄS, H9wi M¥ g (V4)。7,®¿N Ëùî 7Z¥ HWÉ,Cµ¥¡ö1“Ï3ªm¥) Ø/ #±é!ÿ ßN© 5× 11-12 , # 3Ä·S¥ ÄSgwi¥¡ 4-5,10 。&#39; kHq/¤¥ 3Ä·S ÄSgwi γ1µ÷、÷&lt;W¥ k £ ÿ。 IÓD: 1 &nbsp; Ó , °r Â,f í. öê 8 vv °!s Æ J.gЯg, 2000 , 15(3):65-67. 2 &nbsp;I ,ç Ü,f í.Tþ!¥í å© k/ J. W¸ j&lt;, 2001(6):36-37. 3 &nbsp;Blackmer T M, Schepers J S, Varel G E.Light reflectance com-pared with other nitrogen stress measurements in corn leaves J.A-gron J, 1994, 6:934-938. 4 &nbsp;Jia Liangliang , Cheng Xinping.Use of digital camera to assess ni-trogen status of winter wheat in the northern China plain J.Jour-nal of Plant Nutrition, 2004, 27(3):441-450. 5 &nbsp;²ÈÜ,f í,ë ü,©. ã½!#gwiùî J.ÏS j&lt; SÐ,2002, 35(12):1500-1505. 6 &nbsp;Ï æ£,£Ï,Ï£,©.¿3ªQ ; ö¥ £ 8= Ë Í S© J.ÏS j&lt; SÐ, 2003, 36(7):807-812. 7 &nbsp;¦ , ¢c,f¥ ,©.¨ 3ms/ É ã½ Í!¥ùî J .ÏS 3 ÿ j&lt;Ð, 2008, 16(1):145-149. 8 &nbsp; ÙÝö,ë á á, à ). 3m/ . Í!Ï¥¨ J.ÏS . , 2006, 20(5):257-260. 9 &nbsp;Scharpf P C, Lory J A.Calibrating corn color from aerial pho-tographs to predict sidedress nitrogen need J.Agron J, 2002, 94:397-404. 10 &nbsp;¦®.¨ 3m/ ÉÛ(I N Í!¥ùî D.É=: j&lt;vÐ,2004. 11 &nbsp;ë, ÙÒ,Ûë V,©. = Ëc Ð3ªQ ;ö¥ç 1“ J. 3 ÿÐ, 2006(10):3463-3469. 12 &nbsp; Ùl, ˤ,¦ X Â,©. æ¨ *Ü© 4 | ã½= Ë3m Íc ¥ùî J .TþÐ, 2007, 33(10):1662-1666.465宋述堯等:數(shù)字圖像技術在黃瓜氮素營養(yǎng)診斷上的應用研究吉林農(nóng)業(yè)大學學報 Journal of Jilin Agricultural University</p>