Spectral estimation of the aboveground biomass of cotton under water–nitrogen coupling conditions

Table 2 Descriptive statistical analysis of the AGB of cotton

Growth stage	Model	Number		Maximum value (g)	Average (g)	Standard deviation	CV (%)
bud stage	total data set	90	24.08	44.96	34.71	6.19	17.83
	training data set	54	24.09	44.92	34.69	6.11	17.61
	validation data set	36	24.08	44.96	34.69	6.38	18.39
flowering stage	total data set	90	20.46	105.43	42.05	14.84	35.27
	training data set	54	21.34	105.43	42.31	15.53	36.71
	validation data set	36	20.46	74.41	41.55	13.46	32.39
boll stage	total data set	90	19.08	133.79	57.19	18.07	31.60
	training data set	54	19.08	133.79	56.32	18.71	33.22
	validation data set	36	27.19	104.06	58.95	16.74	28.40

ISSN: 1746-4811