Study on Maize Leaf Nitrogen Inversion Model Based on Equivalent Water Thickness Gradient

Xi WANG; Gui-fen CHEN; Li-ying CAO; Li MA

doi:10.3964/j.issn.1000-0593(2022)09-2913-06

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 9 >Page 2913 > Article

Spectroscopy and Spectral Analysis
Vol. 42, Issue 9, 2913 (2022)

Study on Maize Leaf Nitrogen Inversion Model Based on Equivalent Water Thickness Gradient

Xi WANG^1;, Gui-fen CHEN^{1; 2; *;}, Li-ying CAO^1;, and Li MA^1;

Author Affiliations

1. College of Information Technology, Jilin Agricultural University, Changchun 130118, China

show less

DOI: 10.3964/j.issn.1000-0593(2022)09-2913-06 Cite this Article

Xi WANG, Gui-fen CHEN, Li-ying CAO, Li MA. Study on Maize Leaf Nitrogen Inversion Model Based on Equivalent Water Thickness Gradient[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2913 Copy Citation Text

show less

Fig. 1. EWT distribution curves of parent sets

Download full size | View in the Article

Fig. 2. Inversion accuracy distribution curves with variable window widths

Download full size | View in the Article

Fig. 3. Frequency distribution curves of contribution value

Download full size | View in the Article

指标	时间	地点	类别	数量	基因类型数	频率/nm	设备型号
叶绿素/氮/磷/钾	2018	林肯温室创新中心	温室	144	144	350~2 500	FieldSpec4
叶鲜重/干重/叶面积 (抽雄期)	2018	林肯大学哈夫洛克研究农场	大田高氮	283	262
	2019	林肯大学哈夫洛克研究农场	大田高氮	249	223
	2018	林肯大学哈夫洛克研究农场	大田低氮	285	261
	2019	林肯大学哈夫洛克研究农场	大田低氮	249	214

Table 1. Datasets details

View in the Article

父集	2018大田高氮					2019大田高氮
窗口宽度	40	50	60	70	80	40	50	60	70	80
滑动步长	10	10	10	10	10	10	10	10	10	10
子集数量	25	24	23	22	21	22	21	20	19	18
父集	2018大田低氮					2019大田低氮
窗口宽度	40	50	60	70	80	40	50	60	70	80
滑动步长	10	10	10	10	10	10	10	10	10	10
子集数量	26	25	24	23	22	22	21	20	19	18

Table 2. Datasets sliding partition detail

View in the Article

氮	父集	(子集) 窗宽40	窗宽50	窗宽60	窗宽70	窗宽80
2018大田高氮
$R_{CV}^{2}$	0.48	0.63	0.7	0.57	0.57	0.58
RMSE_CV	0.72	0.6	0.56	0.66	0.66	0.65
RPD_CV	1.39	1.65	1.8	1.53	1.52	1.54
2019大田高氮
$R_{CV}^{2}$	0.59	0.49	0.68	0.64	0.62	0.62
RMSE_CV	0.64	0.71	0.56	0.6	0.62	0.62
RPD_CV	1.57	1.41	1.77	1.66	1.61	1.62
2018大田低氮
$R_{CV}^{2}$	0.48	0.55	0.55	0.57	0.53	0.52
RMSE_CV	0.72	0.67	0.67	0.66	0.68	0.69
RPD_CV	1.38	1.49	1.49	1.52	1.46	1.44
2019大田低氮
$R_{CV}^{2}$	0.89	0.87	0.89	0.89	0.89	0.88
RMSE_CV	0.33	0.36	0.34	0.34	0.33	0.34
RPD_CV	3	2.73	2.96	2.95	3.01	2.92

Table 3. Nitrogen inversion model results

Xi WANG, Gui-fen CHEN, Li-ying CAO, Li MA. Study on Maize Leaf Nitrogen Inversion Model Based on Equivalent Water Thickness Gradient[J]. Spectroscopy and Spectral Analysis, 2022, 42(9): 2913

Download Citation

Tools

Save the article for my favorites

Paper Information