施氮量对宁夏引黄灌区麦后复种糜子生长、产量及氮素利用的影响

谢呈辉, 马海曌, 许宏伟, 徐郗阳, 阮国兵, 郭峥岩, 宁永培, 冯永忠, 杨改河, 任广鑫

Effects of nitrogen rate on growth, grain yield, and nitrogen utilization of multiple cropping proso millet after spring-wheat in Irrigation Area of Ningxia

XIE Cheng-Hui, MA Hai-Zhao, XU Hong-Wei, XU Xi-Yang, RUAN Guo-Bing, GUO Zheng-Yan, NING Yong-Pei, FENG Yong-Zhong, YANG Gai-He, REN Guang-Xin

图2 不同施氮处理对糜子各生育时期株高、茎粗和叶面积的影响(2019-2020) 图中数据为9次重复的平均值±标准误。柱上不同小写字母表示同一生育时期不同施氮处理间差异显著(P < 0.05)。N: 施氮; Y: 年份; N×Y: 施氮与年份互作。**表示在0.01水平上差异显著, ns表示差异不显著(P > 0.05)。N0、N1、N2、N3、N4和N5分别代表施氮量0、90、120、150、180和210 kg hm-2。

Fig. 2 Effects of different N treatments on plant height, stem diameter, and leaf area at different growth stages of proso millet in 2019 and 2020 The values were means ± standard errors of nine repetitions. Different lowercase letters above the bars indicate significant difference among different N treatments at the same growth stage at P < 0.05. N: N treatment; Y: year; N × Y: the interaction between N treatment and year. **: P < 0.01; ns: P > 0.05. N0, N1, N2, N3, N4, and N5 represents nitrogen rate of 0, 90, 120, 150, 180, and 210 kg hm-2, respectively.