Influence of NPK Combinations on Agronomic Characters, Yield and Nutrition Quality of Potato

doi:10.11924/j.issn.1000-6850.casb20190800573

Abstract

Abstract:

To determine the optimum NPK fertilization rate of potato in Yulin sandy area of Shaanxi Province, field experiments were conducted to study the effects of NPK rates on agronomic characters, yield and nutrition quality of ‘Jizhangshu No.8’ potato. The results showed that various NPK combinations had significant differences on plant height, tuber weight per plant and commodity rate, meanwhile there was no significant difference in the number of tubers per plant. With the increase of nitrogen fertilizer, the yield increased first and then decreased; and with the increase of phosphate fertilizer and potassium fertilizer, the yield change was not obvious. The variation of protein, Vc and reducing sugar were 1.02%-1.69%, 11.49-16.44 mg/100 g and 0.40%-0.84%, respectively, among different treatments. The reasonable NPK fertilizer application rate could improve the growth, yield and quality of potato, and the recommended fertilization is manure 30 t/hm ², N 150 kg/hm ², P₂O₅ 90 kg/hm ², K₂O 112.5 kg/hm ² in Yulin sandy area of Shaanxi with moderate fertility.

Key words: potato, NPK, rational application of fertilizer, agronomic characters, yield, quality

CLC Number:

S532

Wang Xiaoying, Chen Zhanfei, Fang Yuchuan, Lv Jun, Wang Kui, Gao Qingqing, Zhang Yuan. Influence of NPK Combinations on Agronomic Characters, Yield and Nutrition Quality of Potato[J]. Chinese Agricultural Science Bulletin, 2020, 36(4): 44-49.

Figures/Tables 6

References 27

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处理序号	株高/cm	单株块茎重/kg	单株块茎数/个	商品薯率/%	处理序号	株高/cm	单株块茎重/kg	单株块茎数/个	商品薯率/%
1	90.77d	1.52b	8.57a	61.92ab	8	124.33abc	1.41b	9.30a	64.11ab
2	91.97d	1.97ab	9.33a	67.87ab	9	131.33abc	2.06ab	9.47a	73.21a
3	111.50cd	1.79ab	9.00a	69.05ab	10	116.70bcd	2.56a	10.37a	69.00ab
4	110.80cd	1.76ab	10.40a	62.84ab	11	133.17abc	1.89ab	10.33a	68.61ab
5	153.67a	1.95ab	10.50a	63.74ab	12	128.17abc	1.90ab	11.10a	65.94ab
6	147.17ab	1.52b	9.87a	56.60b	13	118.30bcd	1.88ab	9.57a	68.17ab
7	119.83bcd	1.86ab	10.20a	66.63ab	14	120.23bcd	1.56b	9.07a	70.57ab

处理序号	株高/cm	单株块茎重/kg	单株块茎数/个	商品薯率/%	处理序号	株高/cm	单株块茎重/kg	单株块茎数/个	商品薯率/%
1	90.77d	1.52b	8.57a	61.92ab	8	124.33abc	1.41b	9.30a	64.11ab
2	91.97d	1.97ab	9.33a	67.87ab	9	131.33abc	2.06ab	9.47a	73.21a
3	111.50cd	1.79ab	9.00a	69.05ab	10	116.70bcd	2.56a	10.37a	69.00ab
4	110.80cd	1.76ab	10.40a	62.84ab	11	133.17abc	1.89ab	10.33a	68.61ab
5	153.67a	1.95ab	10.50a	63.74ab	12	128.17abc	1.90ab	11.10a	65.94ab
6	147.17ab	1.52b	9.87a	56.60b	13	118.30bcd	1.88ab	9.57a	68.17ab
7	119.83bcd	1.86ab	10.20a	66.63ab	14	120.23bcd	1.56b	9.07a	70.57ab

处理	重复I	重复Ⅱ	重复Ⅲ	平均值	处理	重复I	重复Ⅱ	重复Ⅲ	平均值
1	20715	21060	21780	21185b	8	35160	23445	38505	32370a
2	24060	29115	36105	29760ab	9	34335	38340	34500	35725a
3	31665	30225	39165	33685a	10	27060	39060	38385	34835a
4	33060	32940	38280	34760a	11	29160	34665	36225	33350a
5	31395	22950	23280	25875ab	12	28440	35505	28005	30650ab
6	25500	15225	37440	26055ab	13	16665	34605	35220	28830ab
7	30285	28725	41550	33520a	14	29895	31950	31170	31005ab

处理	重复I	重复Ⅱ	重复Ⅲ	平均值	处理	重复I	重复Ⅱ	重复Ⅲ	平均值
1	20715	21060	21780	21185b	8	35160	23445	38505	32370a
2	24060	29115	36105	29760ab	9	34335	38340	34500	35725a
3	31665	30225	39165	33685a	10	27060	39060	38385	34835a
4	33060	32940	38280	34760a	11	29160	34665	36225	33350a
5	31395	22950	23280	25875ab	12	28440	35505	28005	30650ab
6	25500	15225	37440	26055ab	13	16665	34605	35220	28830ab
7	30285	28725	41550	33520a	14	29895	31950	31170	31005ab

处理序号	蛋白质/%	Vc/(mg/100 g)	还原糖/%	处理序号	蛋白质/%	Vc/(mg/100 g)	还原糖/%
1	1.02b	14.30ab	0.70ab	8	1.27b	14.27ab	0.61ab
2	1.10b	13.19ab	0.46ab	9	1.35ab	12.53ab	0.58ab
3	1.10b	12.87ab	0.84a	10	1.69a	13.47ab	0.65ab
4	1.27b	16.44a	0.54ab	11	1.38ab	14.05ab	0.57ab
5	1.25b	13.07ab	0.61ab	12	1.35ab	13.98ab	0.46ab
6	1.35ab	11.49b	0.62ab	13	1.27b	13.23ab	0.49ab
7	1.15b	13.57ab	0.40b	14	1.33ab	13.87ab	0.40b