Optimization of Controlled Water and Nitrogen Fertigation on Greenhouse Culture of Capsicum annuum

Table 4

Evaluation of fruit quality under different water and nitrogen levels by multiple component analysis.

Irrigation treatment	Nitrogen treatment	Principal component			Comprehensive evaluation	Ranking
		First	Second	Third
		−2.256	2.670	−0.330	−0.28	11
		−1.254	1.693	0.249	0.00	8
		−0.744	1.590	0.886	0.35	5
		−1.145	0.205	−0.959	−0.68	15
		−1.380	1.471	−0.435	−0.28	10
		−0.484	1.060	0.513	0.22	6
		0.840	0.905	2.462	1.22	2
		−0.784	−0.255	−0.960	−0.66	14
		−0.333	0.669	−0.265	0.00	9
		1.102	−0.075	1.369	0.79	3
		1.640	0.543	3.199	1.64	1
		0.277	−1.621	−1.027	−0.61	13
		0.187	−0.811	−1.271	−0.45	12
		1.447	−1.630	−0.268	0.10	7
		2.349	−2.498	0.413	0.40	4
		0.926	−3.434	−2.287	−1.16	16