34 11 () V o l. 34 N o. 11 2006 11 Jour. of N o rthw est Sci2T ech U niv. of A gri. and Fo r. (N aṫ Sci. Ed. ) N ov. 2006 α 1, 1, 2, 1 (1, 450002; 2, 410007) [ ]12 () 1 612,, ( IF I ) : (1), ( ) ( ), ph ; (2), IF I 0. 127 0. 968, 0. 547, 19. 17% ; (3) IF I 5, 92. 3%, IF I, IF I, IF I [ ] ; ; ; ; []S572; S158. 2[]A []167129387 (2006) 1120179205,, [122 ],,, [325 ], [2, 628 ],, [9 ] 1. 65 hm 2, 11. 5 t,,,,,, 1 1. 1 2002 12 () 1 612, 16 94 123 196 246 102 131 143 345 43 73 100,, GPS, 20 cm, 810 0. 5 kg, 1. 2 ph [ 10 ] 1. 3 ( In tegrated Fertility Index, IF I), : IF I = p W in i (1) i= 1, N i W i i SPSS 10. α []2005211203 [](110200401017) ; (0421001900) [](1982- ),,,, [](1964- ),,,,,
180 () 34 0 [11 ] 1. 3. 1, [12213 ], S, (2) (3) 1, (2) S, (3) f (x ) = f (x ) = 1. 0, x x 2 0. 9 (x - x 1) g(x 2 - x 1) + 0. 1, x 1 x x 2 0. 1, x x 1 0. 1, x x 1; x x 2 0. 9 (x - x 1) g(x 3 - x 1) + 0. 1, x 1 x x 3 1. 0, x 3 x x 4 1. 0-0. 9 (x - x 4) g(x 2 - x 4), x 4 x x 2 (2) (3) 1S F ig. 1Curve diagram of S2type function and Parabo la2type function, [ 13216 ], Thresho ld value (x 1) L ow er lim it value (x 3) Op tim al value of low er lim it (x 4) Op tim al value of upper lim it (x 2) U pper lim it value, 1 1 T able 1T ypes of m em bersh ip function and th resho ld values of each fertility index g O. M. ph Parabo la2type function g To taln g W ater so luble C l g Hydro lytic N g A vailable S g To tal P S S2type function g To tal K g A vailable P g A vailable K 15 5. 0 0. 9 10 30 12 0. 5 9 10 100 25 5. 5 1. 4 20 50 24 35 7. 0 2. 5 35 70 90 45 7. 5 3. 5 45 100 160 1. 2 20 20 150 1. 3. 2 (PCA ), [13, 17 ], 2 2 2. 1 3,, 38. 44 ggkg,, 35. 78%, ph 4. 18. 7, 16. 40%, ph, ph ( ),, 0. 924. 95 ggkg 44554. 4 m ggkg,
11 : 181 ; ( ), 0. 253. 83 ggkg 0. 3163. 2 m ggkg, ; ( ), 40%, 2. 044. 9 ggkg 11. 0460 m ggkg Index Comm unality, 3. 7217. 6 m ggkg,, 0. 181. 3 m ggkg, 60%, 3. 47% 45 m ggkg, 2 T able 2W eigh t value of each fertility index W eigh t value Index Comm unality W eigh t value O. M. 0. 938 1 0. 104 H ydro lytic N 0. 886 6 0. 099 ph 0. 859 0 0. 096 A vailable P 0. 888 7 0. 099 To tal N 0. 898 8 0. 100 A vailable K 0. 938 3 0. 104 To tal P 0. 859 7 0. 096 A vailable S 0. 950 5 0. 106 To tal K 0. 992 0 0. 110 W ater so luble C l 0. 770 5 0. 086 3 T able 3Status of the contents of so il nutrients in each tobacco2grow ing area Samp le g O. M. ph g To tal N g To tal P g To tal K T he w ho le P rovince 1612 38. 4413. 75 6. 701. 10 2. 300. 77 0. 820. 32 13. 265. 79 Dongπan 16 39. 487. 06 5. 620. 87 3. 170. 65 0. 600. 14 12. 892. 59 L anshan 94 49. 9816. 00 7. 210. 85 3. 030. 85 1. 170. 49 9. 682. 79 X intian 123 44. 0510. 07 7. 510. 62 2. 620. 58 0. 870. 19 9. 242. 82 L ongshan 196 25. 555. 81 6. 300. 81 1. 530. 32 0. 580. 18 17. 515. 73 L iuyang 246 32. 315. 43 5. 370. 62 1. 990. 30 0. 690. 24 14. 784. 11 Fenghuang 102 21. 754. 24 6. 160. 78 1. 370. 23 0. 650. 37 24. 669. 36 N ingyuan 131 37. 8710. 22 7. 010. 94 2. 340. 64 0. 780. 23 11. 913. 21 J ianghua 143 35. 1111. 23 6. 731. 10 2. 230. 68 0. 730. 32 12. 444. 21 Guiyang 345 46. 2912. 81 7. 440. 68 2. 640. 75 1. 020. 23 10. 893. 13 H engnan 43 32. 997. 83 5. 431. 06 2. 010. 41 0. 570. 15 12. 634. 05 Yongxing 73 46. 679. 92 6. 941. 02 2. 710. 49 0. 820. 20 11. 962. 78 J iahe 100 52. 9413. 38 7. 230. 70 2. 960. 70 0. 990. 19 10. 682. 86 T he w ho le P rovince Samp le g H ydro lytic N g A vailable P g A vailable K g A vailable S g W ater so luble C l 1612 197. 2569. 77 21. 6213. 37 109. 1152. 86 38. 7722. 84 18. 8012. 15 Dongπan 16 222. 4933. 67 17. 147. 41 55. 1615. 59 37. 4012. 24 17. 534. 93 L anshan 94 256. 0476. 34 32. 9214. 59 114. 8539. 87 43. 5519. 56 26. 409. 58 X intian 123 226. 1146. 96 25. 8810. 69 95. 4030. 60 44. 0518. 49 31. 4611. 80 L ongshan 196 124. 8727. 58 8. 177. 48 190. 4162. 31 27. 5317. 22 6. 947. 99 L iuyang 246 156. 7322. 21 21. 1313. 56 136. 9854. 85 28. 6121. 27 12. 425. 20 Fenghuang 102 114. 3718. 03 6. 184. 91 125. 4440. 97 16. 2117. 60 8. 355. 01 N ingyuan 131 216. 7250. 63 20. 799. 21 69. 4431. 14 42. 7121. 57 32. 3010. 57 J ianghua 143 183. 4851. 39 19. 0710. 24 79. 0140. 39 27. 6314. 79 30. 1110. 44 Guiyang 345 234. 3867. 44 30. 6811. 49 107. 1531. 44 54. 8021. 43 18. 998. 68 H engnan 43 194. 3946. 34 15. 016. 65 78. 1228. 04 42. 4211. 50 7. 533. 88 Yongxing 73 269. 3060. 76 20. 907. 83 115. 4930. 50 45. 0616. 78 19. 668. 10 J iahe 100 244. 6559. 55 27. 679. 84 141. 8737. 58 48. 9525. 67 15. 238. 23 2. 2 4, 1 612 0. 547, 0. 1270. 968, 0. 105, 19. 2% (IF I ) 5, : ( IF I 0. 8) (0. 6 IF I < 0. 8)(0. 4IF I < 0. 6) (0. 2IF I < 0. 4) (IF I < 0. 2), 4 4,, (64. 0% )
182 () 34 (26. 7% ),, 0. 601 0. 582, ;,, 0. 5 () 3,,, 3, T he w ho le p rovince Dongπan L anshan X intian L ongshan L iuyang Fenghuang N ingyuan J ianghua Guiyang H engnan Yongxing J iahe H igher (IF I 0. 8) 3,,, (26. 1% ),,, ( ) 4 T able 4P ropo rtion of each so il grade to the to tal fo r different tobacco areas g% T he p ropo rtion of each grade H igh (0. 6 IF I < 0. 8) M edium (0. 4 IF I< 0. 6) L ow er (0. 2 IF I< 0. 4) L ow (IF I< 0. 2) M ean Integrated fertility index Sṫ d Range g% C. V. 1. 6 26. 7 64. 0 7. 6 0. 1 0. 547 0. 105 0. 1270. 968 19. 2 0 0 87. 5 12. 5 0 0. 466 0. 068 0. 3410. 586 14. 7 2. 1 28. 7 63. 8 5. 3 0 0. 558 0. 097 0. 3250. 871 17. 4 0 15. 4 69. 9 14. 6 0 0. 507 0. 095 0. 2920. 704 18. 7 6. 6 40. 3 47. 4 5. 6 0 0. 601 0. 119 0. 2820. 912 19. 9 0. 4 41. 5 56. 5 1. 6 0 0. 582 0. 085 0. 3590. 809 14. 6 2. 0 19. 6 58. 8 18. 6 1. 0 0. 508 0. 133 0. 1270. 847 26. 1 0 25. 2 59. 5 15. 3 0 0. 528 0. 110 0. 3020. 780 20. 8 0. 7 25. 9 60. 1 13. 3 0 0. 533 0. 109 0. 2890. 968 20. 4 1. 4 23. 2 72. 2 3. 2 0 0. 548 0. 093 0. 2780. 896 17. 0 0 0 88. 4 11. 6 0 0. 470 0. 062 0. 3020. 579 13. 1 0 20. 5 75. 3 4. 1 0 0. 537 0. 089 0. 3350. 797 16. 6 1. 0 19. 0 74. 0 6. 0 0 0. 537 0. 086 0. 3290. 825 15. 9 - -,, [18 ], [15 ],,, [8 ],,,, 0. 547, 64. 0% 26. 7% ; () 0. 4660. 601,,,,, ; ( ) ( ),, 1 ph,
11 : 183, [9 ], [18 ], [13 ],, [] [ 1 ],,,. [J ]., 2003 () : 30235. [ 2 ],,,. [J ]. :, 2003, 29 (2) : 1502153. [ 3 ]. [J ]. :, 2001, 15 (2) : 40246. [ 4 ],. [J ]., 2005, 31 (1) : 1152119. [ 5 ],. [J ]. :, 2005, 18 (2) : 66272. [ 6 ],,,. [J ]., 2005, 33 (4) : 30232. [ 7 ],,,. [J ],, 2006, 34 (10) : 220722208. [ 8 ],,. [J ]. :, 2005, 31 (4) : 3762380. [ 9 ],,,. [J ]., 2004, 23 (5) : 1562161. [ 10 ]. [M ]. :, 1983. [ 11 ],. SPSS [M ]. :, 2003. [ 12 ],,,. [J ]., 2000, 13 (2) : 51255. [ 13 ],,,. [J ]., 2004, 15 (10) : 191621920. [ 14 ],,. [J ]., 2004, 36 (1) : 1042106. [ 15 ],,,. [M ]. :, 2000. [ 16 ],,,. [J ]., 2005, 25 (7) : 174821753. [ 17 ],,. [M ]. :, 2004. [ 18 ],,. [J ]., 2002, 11 (2) : 2022205. T he com p rehen sive evaluation of so il fertility statu s fo r tobacco2grow ing areas in H uπnan p rovince L IYan-yan 1, XU Z i-cheng 1, X IAO Han-q ian 2,W ANG L in 1 (1 Colleg e of A g ronomy, H enan A g ricu ltu ral U niversity, Z heng z hou, H eπnan 450002, Ch ina; 2 T obacco Corp oration of H uπnan P rov ince, Chang sha, H uπnan 410007, Ch ina) Abstract: 10 so il nu trien t indexes of 1 612 so il samp les from 12 m ain tobacco2grow ing coun ties in H uπnan p rovince w ere determ ined. T he m ethod of p rincipal componen t analysis w as emp loyed to determ ine the w eigh t value of each index, and the so il feasib ility fo r H uπnan tobacco2grow ing area w as evaluated by estim ating in tegrated fertility index ( IF I ) of each so il samp le. T he resu lts indicated that: (1) con ten ts of o rgan ic m atters, to tal N and hydro lytic N in H uπnan tobacco2grow ing so ils w ere rich, bu t con ten ts of P (to tal P and availab le P) and K (to tal K and availab le K) in so ils w ere low. ph value, availab le S and w ater so lub le C l w ere su itab le. (2) T here ex isted sign ifican t variation fo r the so il fertility of H uπnan tobacco2 grow ing area. IF I values of the w ho le p rovince ranged from 0. 127 to 0. 968, w ith the m ean of 0. 547 and the coefficien t variation of 19. 17%. (3) A cco rding to IF I values, so il fertility of the w ho le p rovince cou ld be classified in to five grades: h igher, h igh, m edium, low and low er. T he p ropo rtion of so il fertility grades above m edium w as 92. 3%. T he IF I values of L ongshan and L iuyang w ere h igher; tho se of Dongπan and H engnan w ere low er; and tho se of o ther coun ties w ere m edium. Key words: p rincipal componen t analysis; tobacco2grow ing area; comp rehen sive evaluation; so il nu trien t; H uπnan p rovince