Effect on the Quality of Foxtail Millet: Combined Application of Fertilizers, Herbicide and Selenium

doi:10.11924/j.issn.1000-6850.casb2022-0701

Abstract

Abstract:

This study explored the effect of combined application of fertilizer, herbicide, and selenium (Se) on the grain quality of foxtail millet in order to optimize the foxtail millet cultivation techniques. ‘Jingu 21’ was used as material, a quadratic general rotation combination design with five factors and five levels was set to study the effects of combined application of nitrogen (N), tetraphosphorus decaoxide (P₂O₅), potassium oxide (K₂O), tribenuron-methyl (TBM) herbicide, and Se on the quality of foxtail millet. Principal component analysis was performed to evaluate the eight quality indicators of foxtail millet, including protein, fat, folate, gel consistency, amylase, alkali digestion value, yellow pigment and selenium. The first principal component, which could explain 58.14% of the total variance of grain quality, was chosen as the comprehensive quality. N×K₂O, N×MSF, and K₂O×MSF interactions had significance influence on the comprehensive grain quality of ‘Jingu 21’. The recommended cultivation conditions of N, P₂O₅, K₂O, Se and MSF were 109.88 kg/hm², 99.20 kg/hm², 110.91 kg/hm², 87.58 g/hm², and 419.35 g/hm² respectively, and the highest predicted comprehensive quality was 57.68. This study provided support for the use of nitrogen, phosphorus, potassium, selenium and herbicide in an optimal combination for foxtail millet production, and provided a theoretical basis for the optimal cultivation management and targeted planting of high-quality foxtail millet.

Key words: foxtail millet, quality, fertilizer, herbicide, selenium, mixed application, principal component analysis

LUO Aiguo, FENG Yikai, PANG Qiong, ZHU Min, NIE Meng’en, YANG Yanjun. Effect on the Quality of Foxtail Millet: Combined Application of Fertilizers, Herbicide and Selenium[J]. Chinese Agricultural Science Bulletin, 2023, 39(18): 11-18.

Figures/Tables 7

References 27

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编码	氮/(kg/hm²)	磷/(kg/hm²)	钾/(kg/hm²)	硒/(g/hm²)	单嘧磺隆/(g/hm²)
-2	0	0	0	0	0
-1	69	36	37.5	60	500
0	138	72	75	120	1000
1	207	108	112.5	180	1500
2	276	144	150	240	2000
△j	69	36	37.5	60	500

编码	氮/(kg/hm²)	磷/(kg/hm²)	钾/(kg/hm²)	硒/(g/hm²)	单嘧磺隆/(g/hm²)
-2	0	0	0	0	0
-1	69	36	37.5	60	500
0	138	72	75	120	1000
1	207	108	112.5	180	1500
2	276	144	150	240	2000
△j	69	36	37.5	60	500

主成分	特征值	贡献百分率/%	累计百分率/%
F1	4.6515	58.1436	58.1436
F2	1.9375	24.2193	82.3629
F3	0.8734	10.9174	93.2802
F4	0.4883	6.1037	99.3839
F5	0.0284	0.3555	99.7394
F6	0.0133	0.1661	99.9056
F7	0.0043	0.0539	99.9594
F8	0.0032	0.0406	100.0000

主成分	特征值	贡献百分率/%	累计百分率/%
F1	4.6515	58.1436	58.1436
F2	1.9375	24.2193	82.3629
F3	0.8734	10.9174	93.2802
F4	0.4883	6.1037	99.3839
F5	0.0284	0.3555	99.7394
F6	0.0133	0.1661	99.9056
F7	0.0043	0.0539	99.9594
F8	0.0032	0.0406	100.0000

品质指标	特征向量
品质指标	F1	F2
蛋白质	0.2229	0.6092
脂肪	0.4563	-0.0380
叶黄素	0.4462	-0.0877
叶酸	-0.1962	0.1915
硒	-0.2260	0.4530
碱消化值	0.2309	0.6021
凝胶稠度	0.4514	-0.0891
直链淀粉	0.4432	-0.0861