こんにゃくいもの生産の推移（全国計）栽培面積収穫面積年次 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 元２３４５６７８９ 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 10a当たりり収量収穫量荒　粉換算量精　粉換算量 ha 15,600 15,800 15,800 15,800 15,400 14,800 14,200 13,700 13,400 12,600 11,800 11,300 11,000 11,800 12,200 12,100 11,300 10,800 10,700 10,400 9,370 8,910 8,800 7,930 7,660 7,160 6,890 6,460 6,060 5,430 5,260 5,350 4,890 4,770 4,720 4,320 4,250 4,310 4,216 3,821 4,070 ha 8,170 8,330 8,240 8,110 8,100 7,780 7,280 6,870 6,840 6,550 6,170 5,940 5,610 6,200 6,370 6,420 5,860 5,570 5,630 5,630 5,140 4,770 4,730 4,260 4,180 3,950 3,960 3,480 3,260 3,080 2,980 2,870 2,770 2,720 2,680 2,590 2,370 2,450 2,431 2,148 2,240 kg 1,230 1,210 1,180 1,300 1,310 1,310 1,290 1,460 1,340 1,360 1,090 1,160 1,340 1,590 1,700 1,830 1,620 1,540 1,580 2,180 2,030 1,830 1,920 1,790 2,140 2,500 2,320 1,800 2,230 2,400 2,330 2,200 2,550 2,600 2,570 2,500 2,460 2,730 2,785 2,784 2,990 t 100,500 101,000 97,600 105,300 106,500 102,100 93,900 100,400 91,600 88,900 67,000 69,100 74,900 98,300 108,200 117,400 95,200 85,600 88,700 122,500 104,400 87,100 90,800 76,000 89,600 98,700 91,800 62,600 72,600 74,700 69,500 63,100 70,800 70,800 68,900 64,600 58,500 66,900 67,427 59,803 67,000 t 17,588 17,675 17,080 18,428 18,638 17,853 16,658 17,628 15,565 14,594 10,750 11,346 12,021 16,168 17,694 19,302 15,558 13,748 12,773 17,640 15,034 12,542 13,075 10,944 12,902 14,213 13,219 9,014 10,454 10,757 10,008 9,086 10,195 10,195 9,922 10,013 8,951 9,767 9,642 8,731 9,799 t 10,993 11,047 10,675 11,518 11,649 10,310 9,620 10,180 8,978 8,448 6,178 6,577 8,010 9,180 9,980 10,878 8,854 7,816 8,060 10,858 9,195 7,560 7,782 6,470 7,258 8,320 7,946 5,280 6,098 6,275 5,838 5,300 5,947 5,947 5,788 5,749 5,148 5,620 5,596 5,030 5,696 3,719 3,639 2,130 2,048 3,009 2,816 64,092 57,670 8,861 8,253 5,285 4,862 注１：H6年までと9、12、15、18、21、24年は農林水産省統計情報部「作物統計」、それ以外は群馬及び栃木を除き日本こんにゃく協会注２：荒粉、精粉換算量は、日本こんにゃく協会推計