江淮地区稻-麦周年产量差及其与资源利用关系
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杜祥备, 习敏, 孔令聪, 吴文革, 陈金华, 许有尊, 周永进
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Yield gaps of rice-wheat double cropping and its relationship with resource utilization in Yangtze-Huaihe Rivers region
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DU Xiang-Bei, XI Min, KONG Ling-Cong, WU Wen-Ge, CHEN Jin-Hua, XU You-Zun, ZHOU Yong-Jin
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表1 江淮地区稻-麦周年产量、产量差和增产潜力
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Table 1 Actual yield, yield potential and yield gaps among different yield levels in Yangtze-Huaihe rivers region
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项目
Item | 产量水平
Different yield level | 水稻
Rice | 小麦
Wheat | 周年
Annual | 产量
Yield (kg hm-2) | 高产纪录Highest recorded yield | 14,674.1 a | 9146.1 a | 22,304.3 a | | 试验水平Experimental yield | 10,491.3 b | 6705.8 b | 17,108.9 b | | 农户水平Farmer yield | 7175.4 c | 5168.2 c | 12,463.3 c | 产量差
Yield gap (kg hm-2) | 高产纪录-农户水平 Highest recorded yield-Farmer yield (YG1) | 7498.6 | 3977.9 | 9840.9 | | 试验水平-农户水平 Experimental yield-Farmer yield (YG2) | 3315.9 | 1537.5 | 4645.6 | 增产潜力
Increase potential (%) | 农户水平-高产纪录 Farmer yield-Highest recorded yield | 104.5 | 77.0 | 79.0 | | 农户水平-试验水平 Farmer yield-Experimental yield | 46.2 | 29.7 | 37.3 |
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