| Crop | Big cycle | Small cycle Years | Seed weight per ear* | Planting density | General yield kg/hm2 | Yield ability | |||
| g | % | Ten thousand/hm2 | % | kg/hm2 | % | ||||
| Corn | I | 1940 1950 1960 1970 | 85.7 127.5 180.2 168.5 | 100.0 148.8 141.3 93.5 | 3.23 3.08 3.78 4.56 | 100.0 95.4 122.7 120.6 | 1656 2239 4644 5531 | 2768 3928 6813 7687 | 100.0 141.9 173.4 112.8 |
| II | 1980 1990 2000 2010 | 213.8 232.8 260.9 261.5 | 126.9 108.9 111.7 100.2 | 4.59 4.94 5.55 6.10 | 100.7 107.6 112.3 109.9 | 8519 9878 10,638 11,665 | 9813 11,500 14,478 15,950 | 127.7 117.2 125.9 110.2 | |
| Rice | I | 1940 1950 1960 1970 | 2.80 2.66 2.78 1.98 | 100.0 95.0 104.5 71.2 | 161.3 213.5 256.9 381.3 | 100.0 132.4 120.3 148.4 | 3506 3666 5500 6480 | 4517 5680 7143 7550 | 100.0 125.7 125.8 116.5 |
| II | 1980 1990 2000 2010 | 2.04 2.78 2.91 3.17 | 103.0 136.3 104.7 108.9 | 382.3 368.7 378.0 367.0 | 100.3 96.6 102.5 97.1 | 6830 8285 8479 8750 | 7800 10,250 11,000 11,663 | 103.3 131.4 107.3 106.0 | |
| Soybean | I | 1940 1950 1960 1970 | 10.83 11.43 13.16 14.00 | 100.0 105.5 115.1 106.4 | 23.5 23.3 20.9 21.7 | 100.0 99.1 89.7 103.8 | 1657 1781 2019 2268 | 2546 2663 2750 2907 | 100.0 104.6 103.3 105.7 |
| II | 1980 1990 2000 2010 | 16.28 18.29 18.46 18.17 | 116.3 112.3 100.9 98.4 | 20.7 19.9 20.2 20.8 | 95.2 96.6 101.3 103.2 | 2550 2744 2775 3014 | 3361 3639 3720 3780 | 115.6 108.3 102.2 101.6 | |
| Sorghum | I | 1940 1950 1960 1970 | 61.9 62.2 66.1 64.5 | 100.0 100.5 106.2 97.50 | 6.07 6.15 6.67 9.18 | 100.0 101.3 108.5 137.6 | 1675 1833 2483 4538 | 3760 3825 4408 5925 | 100.0 101.7 115.2 134.4 |
| II | 1980 1990 2000 2010 | 72.8 84.1 95.9 96.7 | 112.9 115.5 114.0 100.8 | 10.30 11.10 10.75 11.25 | 112.2 107.8 96.8 104.7 | 5943 7575 8418 8938 | 7500 9338 10,312 10,875 | 126.6 124.5 110.4 105.5 | |