I1(The intensity after I0 reflected from upland cotton sample) at each wavelength (nm).

Supplementary Table 3: I₁ (The intensity after I₀ reflected from upland cotton sample) at each wavelength (nm).

Wavelength	6614	6618.4	6622.8	6627.2	6631.6	6636	6640.4	6644.8
I₁	0	5.85	11.7	17.6	23.55	29.5	35.48	41.4
Wavelength	6649.2	6653.6	6658	6662.4	6666.8	6671.2	6675.6	6680
I₁	47.46	53.46	59.54	65.63	71.68	77.83	84	90.1
Wavelength	6684.4	6688.8	6693.2	6697.6	6702	6706.4	6710.8	6715.2
I₁	84.28	78.44	72.56	66.58	60.67	54.72	48.69	42.7
Wavelength	6719.6	6724	6728.4	6732.8	6737.2	6741.6	6746
I₁	36.68	30.6	24.54	18.44	12.3	6.17	0