茶生産における施肥の現状と課題 - maff.go.jp

1 EC .. 18 24 6 . 30 .. (a) 171 495 181 152 134 211 200. ( 1,432 4,268 2,608 2,646 2,174 5,475. 190. 126 709 320 236 535 447. 10a 180. 7,368 14,323 17,680 15,526 39,925 21,185 175. %) 170.. 18 18 160. 150 149. 142. 140. 130 130.. 2002 3387 2155 11835 249 1459 4432 120. 610 758 507 1649 44 353 1045 110. 10a 69 51 57 45 8 54 99 100. H12( ) 13 14 15 16 17 18 19 20. H12 = 100. 7 . 18 . 1.. 40 50 10a 50 60kg .. 1980 1990 70kg/10a 0 25kg/10a .. 200 . 2005 .. 80. 80. 70 . 70. kg//10a).. 60 60. kg/10a). 50 50. 40. 40. 30. 30.. 10a 20. 20. 10. 10 0. 0 .. 1 2 3 4 5 .. 79 98 99 03 . 1 79 83 278 2 84 88 341 3 89 93 346 . 4 94 98 327 5 99 03 89 .. 160. mg/100g). 140. 120.. 100. 80. 60.. 40. 20. 0.. 1 2 3 4 5 . 79 98 99 03 . 1 79 83 341 2 84 88 350 3 89 93 353 1 2mm . 4 94 98 340 5 99 03 85 .. 30mg/100g . JA Q&A . 100g . 30mg/100g .. 1 1 4 1 .. 163ha .. 192 1 . 76,175 38,865 33ha 3,414 1 . 61,747 42,461 19ha 20 1 . 9,158 6,684 1,316 1.

2 43,406 35,305 226 1 . 88,581 70,651 62 1 .. 133,598 107,629 127 1 . 9,144 7,060 201 1 .. 37 095. 37,095 29 408. 29,408 50 20 6ha 1 . 1 . 15,709 10,335 40ha .. pH4 0 5 0 pH4 0 . pH 6 . pH .. pH . 100% 1 15 20cm . 0 60. kgg/10a).. 60 100 . 75% . 100 140.. 140 180. 50% 180 220.. 220 . 25% 25% 50% 0%. 75% 100%. (%). 2 35 40cm . 0% 0 60. (kg/10aa). 1 2 3 4 5 60 100. <3 >5 100 140. 79 98 99 03 140 180. 1 79 83 53 2 84 88 55 3 89 93 54 180 220.. 220 . 4 94 98 58 5 99 03 13 . 0% 25% 50% 75% 100% .. (%) .. 10kg/10a . 10kg/10a 30 . 30 . 28kg/10a . 40 50 120kg/10a .. (kg/10a).. 2000 .. 7 3 . 7 3 . 11 3 17 3 . 1992 . EC .. EC RQ .. EC 2 4 . 4 . (kg/10a).. 1999 . 2000 . 2001 .. ( ) ( ) ( ) 50.. mg/L . 40. 22 .. 30. (kg/10a) (kg/10a). 20. 1999 2000 2001 1999 2000 2001 . EC 725 579 566 623 611 465 478 518 10. (115) (101) (98) (105) (104) (108) (104) (105). 633 575 579 596 590 431 458 493 0. 1999 2000 2001 . (100) (100) (100) (100) (100) (100) (100) (100).

3 100 22. 22 .. 1) (mg/100g) 2) ( ).. 1999 2000 2001 1999 2000 2001 1999 2000 2001 . 2,569 2,035 2,027 2,405. , 2,016. , 1,816. , 978 2,186 1,110 1,132 2,208 1,150 1) 19 . 2) EC ECg ECG ECGg 22 .. 1t/10a .. 1,200 . /10a). 1,000. kg/. 800. 600. 400. 10a . 200. 0. 1 2 3 4 5 . 79 98 99 03 . 1 79 83 278 2 84 88 341 3 89 93 346 . 4 94 98 327 5 99 03 89 . 4 94 98 327 5 99 03 89 . 1t/10a .. (kg/10a) (k /10 ). (kg/10a) 24. 49. 88. (kg/10a) (%) 4 27 33.. 20 10 .. 2.. (54) 100 104 95 106 100 96. (40) 100 103 95 102 100 95 ) Nkg/10a .. A (54). ( ) 100 100 100 100 100 100 kg/10a 20 60. (746) (645) ( ) ( ) ( ) ( ) 1998 1999 2 . LP70 55 . B (80) 99 99 97 104 100 99.. 40 96 100 95 105 100 93 B .. b) . kgN/10a kg/10a a) . 45 (98) 45 (92) ) a) . 60 (100) 100 .. b) . b) . g kgN/10a kg/10a g a) .. 45 (100) . 45 (103) 20 . 60 (100) . 13 30kg 15kg 10.. kg/10a .. 2001 2002 2003 .. 25kgN/10a 1,074 692 859 875 129.. 50kgN/10a 1,215 865 997 1,026 151.

4 69kgN/10a 759 547 731 679 100.. 2001 2002 2003 . 25kgN/10a 568 480 719 589 116. 50kgN/10a 573 558 739 623 123. 69kgN/10a 487 341 695 508 100.. 2003 .. kgFW/10a kg/10a kg/10a . 3,821 25kgN/10a 30mg/l 2,901 4 706. 4,706 30 6. 61 2. 10 1. 20 2. 50kgN/10a 3,214 6 12. 3,330 69kgN/10a 2,380 11.. 2 1 . 2 1 .. kgN/10a kgN/10a). 1 . 40 20 . 180 . 1 70 . 40 33 . 180 .. 70 41 6 .. 18 . 2006 .. kg/10a) T-N kg/10a) T-N . 471 a 54. 33. 98 a 42. 16. 96.. 470 a 98 a 100.. 392 a 99 a 99. 408 a 98 a 100. 365 a 99 a 99. 475 a 53. 34. 100 a 41. 12. 98. 481 a 100 a 100. 302 a 99 a 100.. 18 12.. (m/sec) .. 1 71. 0 67. 1 20. 32 7. 82 5. 73 1. 78 7. 80 1. 36.. 13.. 43 50 .. 3 5 .. (kg/10a) .. N P K ( /10a) ( /10a). (kg/10a) ( ) ( ) (kg/10a) ( ) ( ). 927 692 29600 1999 836 695 51800 ((111)) ((97)) ((100)) ((100)) ((100)) ((90)) 54 36 54 57 50. 809 784 ) 6 . 2000 807 791 . (100) (100) (100) (99) (106) (100). 874 731 1m . 2001 884. 88 0 6 814. 8 0 (2002 2004).

5 (99) (90) (94) (90) (95) (100). 931 2002 944 . (99) (100) (94). 758 524 2003 791 524 (96) (104) (100) (100) (95) (100). 861 731 2004 934 736 (92) (80) (79) (99) (81) (86).. 14.. 3 .. DNA .. DNA . 30 .. 15.. 16.