江淮地区稻-麦周年产量差及其与资源利用关系

杜祥备, 习敏, 孔令聪, 吴文革, 陈金华, 许有尊, 周永进

Yield gaps of rice-wheat double cropping and its relationship with resource utilization in Yangtze-Huaihe Rivers region

DU Xiang-Bei, XI Min, KONG Ling-Cong, WU Wen-Ge, CHEN Jin-Hua, XU You-Zun, ZHOU Yong-Jin

表2 江淮地区稻麦不同产量群体主要产量构成因子差异

Table 2 Differences of key yield components of rice and wheat among different yield levels in Yangtze-Huaihe rivers region

项目 Item 水稻Rice 小麦Wheat 每穗粒数 Grain number per spike 相对比例 Relative ratio (%) 穗数 Spike number (×104 hm-2) 相对比例 Relative ratio (%) 每穗粒数 Grain number per spike 相对比例 Relative ratio (%) 高产纪录Highest recorded yield 276.8 a 216.1 43.7 a 170.0 34.1 a 119.6 试验水平Experimental yield 167.1 b 130.4 36.2 b 140.9 34.7 a 121.8 农户水平Farmer yield 128.1 c 100.0 25.7 c 100.0 28.5 b 100.0