Jpn. J. Crop Sci. 77 184 93 2008 群馬県東毛地域における水稲品種 あさひの夢 の施肥法に関する検討 1, 2 3 1 2 3 要旨 1993 2000 2000 2002 3 2 0.5 kg/a 20 0.2kg/a キーワード 19200 ha 45 8720 ha 2006 1993 1993, 1990 1998 1999 2 2000 2001 1999 11 材料と方法 2000 2002 2 2000 2002 5 31 25 30 6 15 15 13 2000 1 4 2001 2002 1 4 1 2 40 1 10 4 80 3 150g/ 100g/ 23 30 1991 2004 1978 1 14 14 14 0.5kg/a 0.7kg/a 2 21 0 0 0.2 kg/a 0.4kg/a 3 0.5kg/a 0.2kg/a 5 2 1999 0.5kg/a 0.2kg/a 5 2 20 2002 0.5kg/a 25 15 2007 9 3 371-8570 1-1-1 TEL 027-221-4538 FAX 027-221-4433 takahasi-yu@g-kenshoku.jp
85 1 2000 2002 kg / a 5 0 0.5 0.0 5 2 0.5 0.2 20 2000 2001 5 4 0.5 0.4 20 7 0 0.7 0.0 7 2 0.7 0.2 20 7 4 0.7 0.4 20 5 0 0.5 0.0 5 2 F 0.5 0.2 25 5 2 0.5 0.2 20 5 2 L 0.5 0.2 15 2002 5 4 0.5 0.4 20 7 0 0.7 0.0 7 2 0.7 0.2 20 7 4 0.7 0.2 20 0.0 0.0 2 F 25 20 L 15 1 2000 2002 2000 1961 1990 2001 1971 2000 3. 1 2 10 20 1 2 40 80 0 5 6 1/16 m 2 1995a b 1.8mm m 2 19 9 GS2000 9 12 0 2 2 5
86 77 2008. 2 2000 2002. cm 00 01 02 00 01 02 00 01 02 00 01 02 5 0 8. 21 8. 19 8. 22 10. 4 10. 2 10. 7 84 80 70 79 81 75 5 2 8.21 8.19 8.22 10.5 10.4 10.10 80 78 70 82 81 78 5 4 8.21 8.19 8.22 10.8 10.5 10.11 79 81 71 83 82 79 7 0 8.21 8.19 8.22 10.6 10.3 10.10 82 80 75 83 84 76 7 2 8.21 8.19 8.22 10.7 10.4 10.11 87 72 75 86 85 79 7 4 8.21 8.19 8.22 10.9 10.6 10.12 86 72 76 86 86 80 8. 22 10. 7 76 69 ns ns ns ** ** ** ns ns ns ** * ** ** ** ** ** ** ** ns ns 2002 00 01 02 2000 2001 2002 *,** 5 1 結果 1. 3 か年の気象概況 3 3 1 2000 0.8 2.0 22.0 20. 8 1.2 9 2 3 9 2 40.2 3 1 2001 7 6 7 3 1.2 3.0 3 10 0.38 9 0.8 0.7 9 10 3 2002 7 1 8 3 24.6 26.92.3 5 6 9 0.1 0.4 7 8 10 0.8 2.38 22 302000 9 22 23 2 2. 早植の生育 収量概況 2 3 7 4 2 4 2002 10 12 3 3 78 82 cm 7 2 7 4 1 5 cm 7 4 2000 2 0.5 0.7kg/a 2002 3 2002 5 045.2kg/a 5 4 55.8kg/a 7 0 45.8kg/a 7 4 56.6kg/a 10kg/a2001 5 2 59.6kg/ a 0.5kg/a 0.7kg/a 2000 2 0.7kg/a 5 2 0.5kg/a 0.7kg/a 2000 2000 0.7kg/a 2002 0.5kg/a 2000 0.5kg/a 7.6 7.9 8.50.7kg/a 8.0 8.3 8.80.3 0.4 5 2 7.9 5 0 0.1 0.9
87 3 2000 2002 kg/a 1 9 00 01 02 00 01 02 00 01 02 00 01 02 00 01 02 5 0 43.4 57.9 45.2 14.7 5.1 4.1 7.0 2.3 3.0 7.6 7.6 7.7 0.10 0.00 0.20 5 2 42.1 59.6 52.1 18.5 4.7 2.9 7.0 2.3 2.5 7.9 7.7 7.8 0.000.000.00 5 4 41.4 58.8 55.8 15.8 7.7 3.4 7.5 3.3 3.5 8.5 8.1 8.0 0.10 0.27 0.30 7 0 41.1 51.8 45.8 17.4 8.2 4.5 7.0 2.3 2.8 8.0 7.7 7.9 0.09 0.00 0.30 7 2 40.7 54.2 52.2 19.5 9.5 5.0 6.8 3.0 3.3 8.3 8.1 8.1 0.20 0.36 0.20 7 4 42.0 54.3 56.6 18.5 11.2 5.2 6.7 3.7 3.8 8.8 8.4 8.4 0.09 0.36 0.30 39.9 1.4 2.5 7.7 ns ** ** ns ** * * * ** ** ** ** ** ** ** ** ** ns * * 2002 00 01 02 2000 2001 2002 *,** 5 1 15.0 19 9 GS2000 9 11 5+2 0.00 4 2000 2002 /m 2 1 /m 2 g 00 01 02 00 01 02 00 01 02 00 01 02 00 01 02 5 0 387 435 392 82. 6 73. 8 65. 4 320 321 256 65. 9 82. 1 81. 6 20. 6 22. 0 21. 7 5 2 371 429 399 90. 9 76. 2 70. 3 337 327 281 60. 8 82. 1 83. 9 21. 0 22. 2 22. 1 5 4 365 442 407 95. 1 79. 5 74. 5 347 352 303 57. 3 76. 7 82. 5 20. 8 21. 8 22. 3 7 0 366 477 422 95. 1 65. 7 61. 7 348 313 260 58. 2 77. 8 81. 5 20. 2 21. 3 21. 6 7 2 387 484 420 96. 1 78. 9 70. 2 370 340 295 53. 3 75. 0 81. 7 20. 2 21. 2 21. 7 7 4 384 477 419 110. 1 83.5 75.9 423 361 317 48.3 71.0 80.6 20.6 21.2 22.1 337 62. 3 210 87. 9 21. 7 ns ** ns ** ** ** ** ** ** ** ** ns ** ** ** ** ** ** ** ** ns ** * * ** 2002 00 01 02 2000 2001 2002 *,** 5 1 1/16 2001 4 2001 0.5kg/a 429 442 /m 2 0.7kg/a 477 484 /m 2 1 1 3 2001 0.5kg/a 1 73.8 79.5321 352 /m 2 0.7kg/a 61.7 75. 9 260 317 /m 2 2002 2 2000 2001 0.5kg/a 82.1 76.70.7kg/a 77.8 71.0 0.5kg/a 0.7kg/a 4.3 7.1 3 2001 2000 2002
88 77 2008 5 2000 2002.. cm 00 01 02 00 01 02 00 01 02 00 01 02 5 0 8.27 8.29 8.28 10.12 10.22 10.15 78 82 81 73 85 78 5 2 8.27 8.29 8.28 10.13 10.22 10.15 78 80 81 73 86 80 5 4 8.26 8.29 8.28 10.14 10.22 10.16 79 78 81 73 86 81 7 0 8.28 8.29 8.28 10.13 10.22 10.17 71 74 78 74 83 80 7 2 8.27 8.29 8.28 10.13 10.22 10.17 67 80 77 76 86 83 7 4 8.27 8.29 8.28 10.15 10.22 10.18 70 80 79 78 87 84 8.28 10.14 72 72 ns ns ns ** ns ** ** * ** ** * ** ** ** * ** ** ** ns * 2002 00 01 02 2000 2001 2002 *,** 5 1 6 2000 2002 kg/a 1 9 00 01 02 00 01 02 00 01 02 00 01 02 00 01 02 5 0 47.2 48.6 54.9 15.7 11.2 4.0 5.5 3.0 4.0 8.0 7.4 7.3 0.08 0.33 0.27 5 2 47.0 49.7 58.3 17.9 9.8 2.9 6.0 3.0 4.8 8.3 7.4 7.5 0.000.000.00 5 4 50.0 50.9 60.3 12.4 9.5 4.0 5.3 2.7 5.2 8.4 7.4 7.7 0.08 0.22 0.00 7 0 47.5 49.2 55.4 14.9 9.6 5.0 5.3 2.7 5.5 7.9 7.2 7.6 0.20 0.10 0.00 7 2 50.6 50.0 53.9 14.9 10.5 7.2 5.8 2.3 6.7 8.0 7.4 8.0 0.25 0.10 0.22 7 4 52.3 49.5 59.2 15.9 9.9 6.1 6.5 2.7 7.5 8.3 7.5 8.2 0.20 0.30 0.11 52.0 1.6 2.5 7.9 ns ns ** * ns ** ** ns ** ** ns ** ** ** ** ** ns ns ** ** 2002 00 01 02 2000 2001 2002 *,** 5 1 15.0 19 9 GS2000 9 12 5+2 0.00 2002 0.5kg/a 21.7 22.3 g 0.7kg/a 21.6 22.1g 0.7kg/a 0.5kg/a 2000 3. 普通期の生育 収量概況 2001 5 2002 7 4 10 18 5 2 10 15 3 2000 0.5kg/a 78 79 2 0.7kg/a 67 71 0.5kg/a 10 2001 2002 0.7kg/a. 3 5 2 73 86 cm 7 2 7 4 1 5cm 2000 2001 6 2002 2000 2002 0.5kg/a 54.9 60.3kg/a 0.7kg/a 55. 4 60.3kg/a
89 7 2000 2002 /m 2 1 /m 2 g 00 01 02 00 01 02 00 01 02 00 01 02 00 01 02 5 0 390 453 354 79. 7 75. 5 82. 5 310 341 292 65. 3 67. 4 84. 7 19. 7 21. 1 22. 2 5 2 389 443 361 89. 2 77. 8 85. 1 347 345 307 57. 3 67. 4 84. 7 19. 5 21. 5 21. 8 5 4 395 429 368 87. 2 81. 6 88. 4 344 350 326 63. 7 67. 3 82. 5 20. 0 21. 6 22. 4 7 0 393 398 370 75. 9 82. 2 82. 5 297 327 305 68. 2 69. 0 82. 5 20. 0 21. 8 22. 0 7 2 371 432 393 89. 9 82. 1 84. 5 333 353 332 63. 9 66. 5 75. 4 20. 3 21. 3 21. 5 7 4 388 433 406 90. 6 81. 9 88. 0 352 354 357 61. 5 65. 3 76. 7 20. 4 21. 4 21. 6 307 95.4 293 78.8 22. 5 ns ns ** ** ** ns ** ns ** * ns ** ** ns ** ** ** ** ** ** ** ** ** ** ** 2002 00 01 02 2000 2001 2002 *,** 5,1 1/16 cm 8 2002 20 40 /m 2 cm /m 2.. cm 5 2 F 8. 22 10. 9 71 a 77a 5 2 30 232 62 566 8. 22 10. 10 70 a 77 a 5 2 L 8. 22 10. 10 70 a 77 a 29 180 56 443 8. 22 10. 7 76 69 5 2 F 8. 28 10. 15 83 a 79 a 5 2 29 172 68 437 8. 28 10. 15 81 a 80 a 5 2 L 8. 28 10. 16 78 a 79 a 29 105 61 426 8. 28 10. 14 72 72 F 25 20 L 15 Tukey n=3 5 2000 2002 2000 2002 2000 0.5kg/a 5 2 17.9 5 0 15.75 4 12.4 0.7kg/a 14.9 15.9 2002 0.5kg/a 5 2 0.7kg/a 7 2 0.5kg/a 0.7kg/a 2000 0.5kg 5 2 6.0 2000 0.5kg/a 0.7kg/a 8.0 8.4 7.9 8.3 0.42002 2000 2002 5 0 354 /m 2 7 4 406 / m 2 7 1 3 2002 1 2001 0.7kg/a 2000 2001 0.5kg/a 2001 2 2002 7 4 357 /m 2 307 /m 2 6 76.7 5 2 84. 7 8 2001
90 77 2008 9 2002 kg / a 1 9 5 2 F 51.799 a 3.5a 3.3a 7.7a 5 2 52.1 100 a 2.9a 2.5b 7.8a 5 2 L 50.797 a 3.2a 3.2a 7.9a 39.977 1.4 2.5 7.7 5 2 F 57.298 a 5.9a 4.8a 7.3a 5 2 58.3 100 a 2.9a 4.8a 7.5a 5 2 L 57.198 a 4.1a 4.5a 7.5a 52.089 1.6 2.5 7.9 F 25 20 L 15 15.0 19 9 Tukey n 3 5 GS2000 10 2002 1 /m 2 /m 2 g 5 2 F 400a 72.3 289a 81.8a 21.8a 5 2 397a 70.8 281a 83.9a 22.1a 5 2 L 399a 70.4 281a 81.7a 22.1a 337 62. 3 210 87. 9 21. 7 5 2 F 364a 91.8 334a 78.5b 21.8c 5 2 354a 86.7 307b 84.7a 22.4b 5 2 L 343a 89.2 306b 82.1a 22.7a 307 95. 4 293 78. 8 22. 5 F 25 20 L 15 1/16 Tukey n 3 5 0.5kg/a 0.7kg/a 0.2 kg/a 4. 追肥時期の検討 2002 8 10 5 2 F5 25 2 L 27 21 16 28 23 18 5 2 5 2 F 1 5 2 L 1 8 5 2 L 5 2 5 2 9 5 2 L 343 /m 2 5 2 354 /m 2 10 5 2 F 5 2 289 /m 2 5 2 281 /m 2 334 /m 2 5 2 307 /m 2 5 2 9 考察 1. 早植 10 11 15 20 2003 5 0 7 0
91 0.5kg/a 3 1 4 3 7 0 5 0 7 0 2001 2002 0.5 0.7kg/a 3 2002 2001 5 2 5 4 7 2 7 4 2001 2002 4 5 2 5 4 7 2 7 4 2002 2 2001 4.0 5.4 2001 9 1 20 1977 0.5kg/a 350 /m 2 0.2kg/a 300 /m 2 0.4kg/a 450 480 /m 2 420 400 /m 2 0.4kg/a 3 0.2kg/a 0.5kg/a 0.2kg/a 2. 普通期 2001 10 22 2 5 0 7 0 3 6 2 2002 2002 3 6 2000 2002 0.5kg/a 0.7kg/a 7 2 0.5kg/a 350 /m 2 0 0.2kg/ a 300 /m 2 0.2 0.4kg/ a 450 430 /m 2 350 370 /m 2 0.4kg/a 6 0.2kg/ a 0.5kg/a 0.2kg/a 3. 追肥時期 2 8 2 5 2 9 10 20 1993 4. まとめ 0.5kg/a 0.7kg/a 0.5kg/a 3 5 0.2 0.4kg/ a
92 77 2008 3 0.4 kg/ a 19731970 0.4kg/a 0.2kg/ a 1969 2000 350 /m 2 300 /m 2 320 /m 2 0.5kg/a 0.2kg/a 5 2 3 51.3 48.9kg/a 399 394 /m 2 76 70 21.8 21.0g 315 333 /m 2 2000 9 2 3 2000 2 55. 9 54. 0 kg / a 83 76 22. 1 21. 7 g 55.0kg/a 320 /m 2 80 21. 5 g 2001 2 0.5kg/a 0.7kg/a 2002 89 3 6 0.5kg/a 40 2006 謝辞 引用文献 1977. 6. 3,,.,.,. 119 124. 2006. 1. 52 2005 2006 : 42 43. 1978.. 53 : 687 688. 2001.. 33 : 1 10. 1995a. m 2. 61 : 12 15. 1995b.. 29 : 138 143. 1993. 7. 8 : 35 36. 1973.. 113. 42 : 54 62. 1970.. 92. 39 : 33 40. 2003.
93 1998 1999. 72 : 219 226. 2004... 73 : 253 260. 1969.. 96,. 39 : 294 297. 1991.. 6 : 19 20. Studies on the for Paddy Rice Cultivar "Asahi-no-yume" Method of Fertilizer Application in Tomo Aarea of Gunma Prefecture : Yukitsugu TAKAHASHI *, 1, 2), Tomohiko YOSHIDA 3) ( 1) Gunma Agr. Exp. Stn., Tatebayashi, Gunma, 374-0006, Japan; 2) United Grad. Sch. of Agr. Coll., Tokyo Univ. of Agr. and Tech. 3)Fac. Agr., Utsunomiya Univ.) Abstract : In Tomo Area of Gunma prefecture, paddy rice cultivar Goropikari has been widely cultivated since 1993. This cultivar has a good taste, but, farmers pointed out its weak resistance to diseases and insects, low yielding ability and poor grain quality after its release, and they awaited a replacement cultivar. In the 2000 s, we recommended replacing it with a new cultivar "Asahino-yume" in Tomo area, but we had little knowledge on the cultivation method of the cultiver. Therefore, we studied the method of fertilizer application for"asahi-no-yume"planted in early and normal seasons in Tomo area for 3 years from 2000 to 2002. We found that it was possible to cultivate the plants with a high yield and high quality by basal dressing 0. 5 kgn / a and top dressing of 0. 2 kgn / a about 20 days before heading, in both copping seasons. Key words : Asahi-no-yume, Basal dressing, Goropikari, Method of fertilizer application, Paddy rice cultivar, Rice and wheat double cropping, Time of top dressing application, Top dressing.