Effects of different nitrogen fertilizer gradients and ratios of nitrogen, phosphorus and potassium on the yield and quality of ratoon rice

doi:10.16178/j.issn.0528-9017.20240839

Abstract

Abstract:

To explore the high-yield and high-quality fertilization model of ratoon rice, a field experiment was conducted in Heshan District, Yiyang City, Hunan Province in 2023, using Shuangliangyou 138 as the material. Three nitrogen fertilizer gradients (N1, N2, N3, with nitrogen application rates of 150, 210, and 270 kg·hm^-2 respectively) and two nitrogen-phosphorus-potassium (N-P-K) ratios (P1, P2, with N, P₂O₅, K₂O mass ratios of 1.0∶0.5∶1.0 and 1.0∶0.6∶1.2 respectively) were set up to study fertilizer the effects of different nitrogen fertilizer application rates and ratios on the yield and quality of ratoon rice. The results showed that, on the whole, with the increase of nitrogen fertilizer application rate, the first season yield of ratoon rice showed a trend of increasing first and then decreasing, the chalkiness rate and chalkiness degree of regenerative season decreased first and then increased, the gel consistency and the amylose content increased first and then decreased. The effect of (N-P-K) ratio on yield and quality was relatively small. The highest yield of the first season was N2P2, the highest yield of the ratoon season was N3P2, and the highest annual yield was N2P2. In terms of quality, N3P2 had moderate amylose content and pasting properties, but the worst appearance quality. N2P2 had the best appearance quality, and both pasting properties and taste quality were good. In conclusion, the optimal fertilization model for ratoon rice Shuangliangyou 138 is the N2P2 combination, which is conducive to achieving a balance between high yield and high quality.

Key words: ratoon rice, nitrogen application rate, fertilizer management, yield, quality

CLC Number:

S511

WEN Shuai, LIANG Lingyu, WANG Yueli, SUN Manwen, LUO Longxin, ZHAO Wanghui, DUAN Zhao, WANG Xuehua. Effects of different nitrogen fertilizer gradients and ratios of nitrogen, phosphorus and potassium on the yield and quality of ratoon rice[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(11): 2556-2561.

Figures/Tables 5

References 23

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处理	穗数/ (穗·m^-2)	每穗总粒数/ 粒	结实率/ %	千粒重/ g	理论产量/ (t·hm^-2)	实际产量/ (t·hm^-2)
N1P1	227.78±9.34 ab	209.07±5.08 bc	88.00±0.03 a	25.12±0.20 a	10.40±1.04 bc	8.60±0.05 bc
N1P2	239.22±6.85 a	210.77±4.19 bc	86.00±0.03 a	24.44±1.06 a	10.97±0.81 abc	9.05±0.64 ab
N2P1	230.25±13.70 ab	222.87±9.96 ab	88.33±0.01 a	25.23±0.42 a	11.43±0.12 ab	9.13±0.06 ab
N2P2	245.20±6.85 a	236.70±8.00 a	88.00±0.01 a	24.69±0.32 a	12.63±0.57 a	9.35±0.36 a
N3P1	209.32±5.18 b	198.63±10.18 c	86.67±0.01 a	24.46±0.26 a	9.70±0.87 bc	8.12±0.19 c
N3P2	227.26±11.29 ab	205.67±11.41 bc	87.22±0.02 a	23.26±1.92 a	9.47±1.52 c	8.13±0.08 c

处理	穗数/ (穗·m^-2)	每穗总粒数/ 粒	结实率/ %	千粒重/ g	理论产量/ (t·hm^-2)	实际产量/ (t·hm^-2)
N1P1	227.78±9.34 ab	209.07±5.08 bc	88.00±0.03 a	25.12±0.20 a	10.40±1.04 bc	8.60±0.05 bc
N1P2	239.22±6.85 a	210.77±4.19 bc	86.00±0.03 a	24.44±1.06 a	10.97±0.81 abc	9.05±0.64 ab
N2P1	230.25±13.70 ab	222.87±9.96 ab	88.33±0.01 a	25.23±0.42 a	11.43±0.12 ab	9.13±0.06 ab
N2P2	245.20±6.85 a	236.70±8.00 a	88.00±0.01 a	24.69±0.32 a	12.63±0.57 a	9.35±0.36 a
N3P1	209.32±5.18 b	198.63±10.18 c	86.67±0.01 a	24.46±0.26 a	9.70±0.87 bc	8.12±0.19 c
N3P2	227.26±11.29 ab	205.67±11.41 bc	87.22±0.02 a	23.26±1.92 a	9.47±1.52 c	8.13±0.08 c

处理	穗数/ (穗·m^-2)	每穗总粒数/ 粒	结实率/ %	千粒重/ g	理论产量/ (t·hm^-2)	实际产量/ (t·hm^-2)	周年产量/ (t·hm^-2)
N1P1	444.06±28.01 b	64.27±4.53 b	81.34±0.01 a	19.98±0.37 a	4.64±0.20 c	4.45±0.06 b	13.05±0.07 b
N1P2	444.06±8.98 b	69.27±1.88 b	81.00±0.02 a	19.88±0.75 a	4.96±0.35 bc	4.49±0.20 b	13.54±0.82 ab
N2P1	442.56±15.75 b	68.70±3.43 b	82.02±0.02 a	19.86±0.42 a	4.97±0.29 bc	4.64±0.07 b	13.77±0.01 ab
N2P2	453.03±4.49 ab	70.03±0.75 b	76.86±0.02 a	20.50±0.51 a	5.01±0.15 bc	4.75±0.09 b	14.10±0.44 a
N3P1	518.81±54.26 a	66.10±1.19 b	80.00±0.07 a	19.51±0.54 a	5.32±0.45 b	5.22±0.07 a	13.52±0.29 ab
N3P2	487.42±15.75 ab	79.93±0.64 a	77.82±0.06 a	19.49±0.57 a	5.91±0.07 a	5.51±0.30 a	13.74±0.30 ab

处理	穗数/ (穗·m^-2)	每穗总粒数/ 粒	结实率/ %	千粒重/ g	理论产量/ (t·hm^-2)	实际产量/ (t·hm^-2)	周年产量/ (t·hm^-2)
N1P1	444.06±28.01 b	64.27±4.53 b	81.34±0.01 a	19.98±0.37 a	4.64±0.20 c	4.45±0.06 b	13.05±0.07 b
N1P2	444.06±8.98 b	69.27±1.88 b	81.00±0.02 a	19.88±0.75 a	4.96±0.35 bc	4.49±0.20 b	13.54±0.82 ab
N2P1	442.56±15.75 b	68.70±3.43 b	82.02±0.02 a	19.86±0.42 a	4.97±0.29 bc	4.64±0.07 b	13.77±0.01 ab
N2P2	453.03±4.49 ab	70.03±0.75 b	76.86±0.02 a	20.50±0.51 a	5.01±0.15 bc	4.75±0.09 b	14.10±0.44 a
N3P1	518.81±54.26 a	66.10±1.19 b	80.00±0.07 a	19.51±0.54 a	5.32±0.45 b	5.22±0.07 a	13.52±0.29 ab
N3P2	487.42±15.75 ab	79.93±0.64 a	77.82±0.06 a	19.49±0.57 a	5.91±0.07 a	5.51±0.30 a	13.74±0.30 ab

处理	粒长/mm	粒宽/mm	长宽比	垩白粒率/%	垩白度	透明度
N1P1	3.57±0.07 a	2.01±0.01 a	1.77±0.03 a	13.57±3.11 bc	3.37±0.32 bc	2
N1P2	3.36±0.25 a	1.97±0.03 ab	1.69±0.10 a	11.99±1.69 bc	3.45±0.65 abc	2
N2P1	3.46±0.06 a	1.99±0.01 ab	1.73±0.03 a	14.13±3.21 b	4.08±0.94 ab	2
N2P2	3.32±0.11 a	1.97±0.02 ab	1.67±0.04 a	9.80±0.64 c	2.63±0.56 c	2
N3P1	3.35±0.16 a	1.96±0.02 b	1.69±0.07 a	14.85±0.64 ab	4.49±0.43 a	2
N3P2	3.42±0.04 a	1.99±0.02 ab	1.71±0.01 a	17.94±1.17 a	4.54±0.27 a	2