五、发展经济作物、森林和草原的物质基础 我国经济作物面积占总耕地的20%(约2651公 顷),平均施肥是粮食作物的1.5-2.0倍。需肥 996万吨。 森林14亿公顷(FAO,1990)如能重点施肥,可 大大加速成材。如施肥面积30%,施肥量50千 克/公顷,需肥213万吨。 ■草原3.181亿公顷(FAO,1990)。如果对水源有 保证的40%的草地施肥,施肥量75千克/公顷, 即可迅速提高产草量和载畜率。需肥957万吨
五、发展经济作物、森林和草原的物质基础 ◼ 我国经济作物面积占总耕地的20%（约2651公 顷），平均施肥是粮食作物的1.5-2.0倍。需肥 996万吨。 ◼ 森林1.4亿公顷（FAO,1990),如能重点施肥 ，可 大大加速成材。如施肥面积30%，施肥量50千 克/公顷，需肥213万吨。 ◼ 草原3.181亿公顷（FAO,1990)。如果对水源有 保证的40%的草地施肥，施肥量75千克/公顷， 即可迅速提高产草量和载畜率。需肥957万吨
ch Commodity(FAO) (00OHa)Fertilized P205 K20 NP205 TOTAL Year 1997 Rate(Kg/Ha) Consumption(OOOMt Apple 2690.2 10001400 70.0 450 37661695 726 61 18.7 anana 1508 10002200850110.0 332 166 61.3 Barley 140001000 80.0 112.0 15.8 174.3 Cantaloupe 168.5 1000100.0 50.0 55.0 16.9 31.5 Cassava 231.0 900 95 00 45.0 300 198 56729 52 38 8.8 Castorbean 2430 00 250 10.9 0.6 15.4 Citrus fruits 1123.9 000 501686 45.5 2905 Cotton 55280100.0120.0 70.0 50 663.4 3483 62.2 1073.8 Fla 9251000550 40.0250 5.1 Grape Groundnut 3775.7 1000 75.0 650 40.0 2832220.9 906 594.7 Jute/ Kenaf 1757100.01000650 30.0 176 0.3 4.2 32.1 6678 950650 40.0 30.0 10 63.6 211523 00130.040.040.02749.8 961 34690 Millet 16720 900650 250 00 978 25.1 0.0 122.9 40001000650180 20.0 26.0 5.0 08 318 Pear 000 75.0 650 78.0 Potato 3207.6 10001250 550 75.0 401.0 1676 962 6648 Potato sweet 65110100.01250 50.0 750 813.9 260.4 390.7 14650 Pulses 35143 900550800 500 174.0 224.9 52.7 4516 Rapeseed 57832 100.0 0 600 50.0 722.9 96 329 144.6 1197.1 30171510001450 600 40.0437491629.3 724.1 6728.2 Rubber 5871 000600 .0 40.0 768 5000100080.0 250 0 40.0 8.1 1.0 49.1 Sesame 6899 1000950 400 300 655 166 862 Sorghum 1368.0 100.0 00 0.0 139.5 Soybean 2219 980 60070.0 30.0 5422 5810 110.7 12339 Sugar beet 6984 1000120.0 650 35.0 838 45.4 13.4 142.6 Sugar cane 105651000150.0 75.0 158.5 68.7 306.4 Sunflower 8049 000 80.0 300 50.0 64.4 145 08 79.7 ITaro 83 0 100.0 160.0 800 80.0 13.3 53 4.6 23.2 11346100.0 30.0 500 35.0 147.5 48.2 27.8 2235 TObacco 1489.8 100.0 70.0 1490 89.4 3374 8920.7 9001500750 40.0 1204.3 468 3 178.4 1851.0 Watermelon 000160.0 90.0 650 138.8 702 535 2625 Wheat 2898071000 Others 11171.5 1200185 251340.6 206.7 9 1575.2 Total 1571322 1880478146627642297155 1994 Overall consumption estimate(FAo) 1916007329023530288420
China Area % Area Commodity (FAO) (000Ha) Fertilized N P205 K20 N P205 K20 TOTAL Year 1997 Rate (Kg/Ha) Apple 2690.2 100.0 140.0 70.0 45.0 376.6 169.5 72.6 618.7 Banana 150.8 100.0 220.0 85.0 110.0 33.2 11.5 16.6 61.3 Barley 1400.0 100.0 80.0 35.0 25.0 112.0 46.6 15.8 174.3 Cantaloupe 168.5 100.0 100.0 50.0 55.0 16.9 6.7 7.9 31.5 Cassava 231.0 90.0 95.0 45.0 30.0 19.8 5.2 3.8 28.8 Castorbean 243.0 75.0 60.0 40.0 25.0 10.9 3.9 0.6 15.4 Citrus fruits 1123.9 100.0 150.0 80.0 45.0 168.6 76.4 45.5 290.5 Cotton 5528.0 100.0 120.0 70.0 25.0 663.4 348.3 62.2 1073.8 Flax 92.5 100.0 55.0 40.0 25.0 5.1 2.8 0.3 8.2 Grape 148.9 100.0 150.0 90.0 65.0 22.3 13.4 6.8 42.5 Groundnut 3775.7 100.0 75.0 65.0 40.0 283.2 220.9 90.6 594.7 Jute/Kenaf 175.7 100.0 100.0 65.0 30.0 17.6 10.3 4.2 32.1 Linseed 667.8 95.0 65.0 40.0 30.0 41.2 21.4 1.0 63.6 Maize 21152.3 100.0 130.0 40.0 40.0 2749.8 423.0 296.1 3469.0 Millet 1672.0 90.0 65.0 25.0 0.0 97.8 25.1 0.0 122.9 Oat 400.0 100.0 65.0 18.0 20.0 26.0 5.0 0.8 31.8 Pear 750.1 100.0 120.0 75.0 65.0 90.0 56.3 31.7 178.0 Potato 3207.6 100.0 125.0 55.0 75.0 401.0 167.6 96.2 664.8 Potato, sweet 6511.0 100.0 125.0 50.0 75.0 813.9 260.4 390.7 1465.0 Pulses 3514.3 90.0 55.0 80.0 50.0 174.0 224.9 52.7 451.6 Rapeseed 5783.2 100.0 125.0 60.0 50.0 722.9 329.6 144.6 1197.1 Rice 30171.5 100.0 145.0 60.0 40.0 4374.9 1629.3 724.1 6728.2 Rubber 587.1 100.0 60.0 45.0 40.0 35.2 25.1 16.4 76.8 Rye 500.0 100.0 80.0 25.0 20.0 40.0 8.1 1.0 49.1 Sesame 689.9 100.0 95.0 40.0 30.0 65.5 16.6 4.1 86.2 Sorghum 1368.0 100.0 90.0 30.0 0.0 123.1 16.4 0.0 139.5 Soybean 9221.9 98.0 60.0 70.0 30.0 542.2 581.0 110.7 1233.9 Sugar beet 698.4 100.0 120.0 65.0 35.0 83.8 45.4 13.4 142.6 Sugar cane 1056.5 100.0 150.0 75.0 65.0 158.5 79.2 68.7 306.4 Sunflower 804.9 100.0 80.0 30.0 50.0 64.4 14.5 0.8 79.7 Taro 83.0 100.0 160.0 80.0 80.0 13.3 5.3 4.6 23.2 Tea 1134.6 100.0 130.0 50.0 35.0 147.5 48.2 27.8 223.5 Tobacco 1489.8 100.0 100.0 75.0 70.0 149.0 89.4 99.1 337.4 Vegetables 8920.7 90.0 150.0 75.0 40.0 1204.3 468.3 178.4 1851.0 Watermelon 867.2 100.0 160.0 90.0 65.0 138.8 70.2 53.5 262.5 Wheat 28980.7 100.0 120.0 85.0 32.0 3477.7 2414.1 92.7 5984.5 Others* 11171.5 120.0 18.5 2.5 1340.6 206.7 27.9 1575.2 Total 157132.2 18804.7 8146.6 2764.2 29715.5 1994 Overall consumption estimate (FAO) 19160.0 7329.0 2353.0 28842.0 Consumption (000Mt)