Yield gap and resource utilization efficiency of three major food crops in the world - A review

• 作者: DUAN Feng-ying GONG Kai-yuan HE Jian-qiang LI Shao-kun RONG Liang-bing YU Qiang ZHAO Ming ZHOU Wen-bin
• 来源期刊: 农业科学学报（英文）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: Section 1: Using modeling method to evaluate yield and efficiency gaps
• 页码范围: 349-362
• 页数: 14页
• 语种: 英文
• DOI: 10.1016/S2095-3119(20)63555-9

摘要

Yield gap analysis could provide management suggestions to increase crop yields, while the understandings of resource utilization efficiency could help judge the rationality of the management. Based on more than 110 published papers and data from Food and Agriculture Organization (FAO, www.fao.org/faostat) and the Global Yield Gap and Water Productivity Atlas (www.yieldgap.org), this study summarized the concept, quantitative method of yield gap, yield-limiting factors, and resource utilization efficiency of the three major food crops (wheat, maize and rice). Currently, global potential yields of wheat, maize and rice were 7.7, 10.4 and 8.5 t ha–1, respectively. However, actual yields of wheat, maize and rice were just 4.1, 5.5 and 4.0 t ha–1, respectively. Climate, nutrients, moisture, crop varieties, planting dates, and socioeconomic conditions are the most mentioned yield-limiting factors. In terms of resource utilization, nitrogen utilization, water utilization, and radiation utilization efficiencies are still not optimal, and this review has summarized the main improvement measures. The current research focuses on quantitative potential yield and yield gap, with a rough explanation of yield-limiting factors. Subsequent research should use remote sensing data to improve the accuracy of the regional scale and use machine learning to quantify the role of yield-limiting factors in yield gaps and the impact of change crop management on resource utilization efficiency, so as to propose reasonable and effective measures to close yield gaps.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	LI Shao-kun	中国农业科学院作物科学研究所	2	17	1.0	2.0
2	ZHAO Ming	中国农业科学院作物科学研究所	4	21	1.0	4.0
3	RONG Liang-bing	中国农业科学院作物科学研究所	1	0	0.0	0.0
4	GONG Kai-yuan	中国农业科学院作物科学研究所	1	0	0.0	0.0
5	DUAN Feng-ying	中国农业科学院作物科学研究所	2	0	0.0	0.0
6	HE Jian-qiang	中国农业科学院作物科学研究所	1	0	0.0	0.0
7	ZHOU Wen-bin	中国农业科学院作物科学研究所	2	0	0.0	0.0
8	YU Qiang	中国农业科学院作物科学研究所	1	0	0.0	0.0