Effects of sowing date and nitrogen application rate on grain yield and nitrogen utilization of rice variety Nanjing 9108

doi:10.3969/j.issn.1004-1524.2022.05.01

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (5): 879-886.DOI: 10.3969/j.issn.1004-1524.2022.05.01

• Crop Science • Previous Articles Next Articles

Effects of sowing date and nitrogen application rate on grain yield and nitrogen utilization of rice variety Nanjing 9108

YE Ying(), ZHAO Kaocheng, MA Jun, ZHU Ke, ZHUANG Hengyang()

Jiangsu Key Laboratory of Crop Genetics and Physiology, Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou 225009, Jiangsu, China

Received:2021-03-30 Online:2022-05-25 Published:2022-06-06
Contact: ZHUANG Hengyang

Abstract

Abstract:

In order to explore the effects of combinations of sowing date and nitrogen rate on yield components and nitrogen utilization of high-quality rice variety Nanjing 9108, three sowing dates were set as May 23^rd (B1), June 2^nd (B2), and June 12^th (B3), four nitrogen application rates were set as 0 (N0), 180 kg·hm^-2 (N1), 270 kg·hm^-2 (N2), and 360 kg·hm^-2 (N3) in the field experiment. It was shown that the 1 000-grain weight and yield of rice increased with the delay of sowing date, and the number of panicles increased with the increasing nitrogen application rate. The nitrogen distribution ratio of grains in the three sowing dates all reached the highest under N1 treatment. With the delay of the sowing date, the nitrogen partial productivity and nitrogen use efficiency in grain of rice increased, and the agronomic nitrogen use efficiency and the nitrogen physiological efficiency first decreased and then increased. Under the same sowing date, the nitrogen partial productivity, agronomic nitrogen use efficiency, nitrogen uptake and utilization efficiency and nitrogen use efficiency in grain of rice all showed a downward trend with the increasing nitrogen rate. Under the experiment condition, delaying the sowing date with appropriate nitrogen rate were conducive to obtain high yield. Considering the rice yield and nitrogen utilization, B2N2 or B3N2 treatments were suitable choices.

Key words: rice, sowing date, nitrogen application rate, yield, nitrogen utilization

CLC Number:

YE Ying, ZHAO Kaocheng, MA Jun, ZHU Ke, ZHUANG Hengyang. Effects of sowing date and nitrogen application rate on grain yield and nitrogen utilization of rice variety Nanjing 9108[J]. Acta Agriculturae Zhejiangensis, 2022, 34(5): 879-886.

Figures/Tables 3

References 40

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播期 Sowing date	施氮量 Nitrogen rate	穗数 Number of panicles/10⁴ hm^-2	每穗粒数 Spikelet per panicle	结实率 Seed setting rate/%	千粒重 1 000-grain weight/g	产量 Yield/( kg·hm^-2)
B1	N0	226.56±5.12 d	112.30±3.02 b	80.58±1.21 a	25.58±0.34 a	5 239.52±112.07 b
	N1	323.61±1.39 c	144.22±4.97 a	79.20±1.13 a	24.46±0.08 b	9 034.93±115.34 a
	N2	362.57±4.24 b	145.87±2.98 a	70.62±1.80 b	24.96±0.11 ab	9 316.82±114.34 a
	N3	389.33±5.89 a	132.26±0.82 a	70.30±0.94 b	24.67±0.11 ab	8 929.10±110.95 a
B2	N0	253.63±2.94 c	123.54±1.52 b	78.51±0.98 b	27.19±0.11 a	6 686.47±101.87 c
	N1	296.60±6.88 b	136.11±1.78 a	83.66±0.48 a	27.56±0.19 a	9 302.65±103.64 b
	N2	362.39±7.97 a	136.71±0.90 a	77.80±0.77 b	27.39±0.30 a	10 550.68±54.94 a
	N3	384.65±5.31 a	141.81±1.42 a	64.51±0.27 c	27.20±0.08 a	9 567.66±101.85 b
B3	N0	235.21±3.27 c	125.72±0.46 b	78.81±1.57 a	28.10±0.19 a	6 545.81±106.37 c
	N1	335.77±1.74 b	140.96±2.32 a	72.58±0.08 bc	28.41±0.24 a	9 755.82±119.61 b
	N2	331.32±2.85 b	141.11±2.89 a	78.53±1.40 ab	28.30±0.15 a	10 384.47±115.25 ab
	N3	385.35±1.60 a	143.43±3.29 a	67.67±0.52 c	28.35±0.03 a	10 600.21±107.08 a

播期 Sowing date	施氮量 Nitrogen rate	穗数 Number of panicles/10⁴ hm^-2	每穗粒数 Spikelet per panicle	结实率 Seed setting rate/%	千粒重 1 000-grain weight/g	产量 Yield/( kg·hm^-2)
B1	N0	226.56±5.12 d	112.30±3.02 b	80.58±1.21 a	25.58±0.34 a	5 239.52±112.07 b
	N1	323.61±1.39 c	144.22±4.97 a	79.20±1.13 a	24.46±0.08 b	9 034.93±115.34 a
	N2	362.57±4.24 b	145.87±2.98 a	70.62±1.80 b	24.96±0.11 ab	9 316.82±114.34 a
	N3	389.33±5.89 a	132.26±0.82 a	70.30±0.94 b	24.67±0.11 ab	8 929.10±110.95 a
B2	N0	253.63±2.94 c	123.54±1.52 b	78.51±0.98 b	27.19±0.11 a	6 686.47±101.87 c
	N1	296.60±6.88 b	136.11±1.78 a	83.66±0.48 a	27.56±0.19 a	9 302.65±103.64 b
	N2	362.39±7.97 a	136.71±0.90 a	77.80±0.77 b	27.39±0.30 a	10 550.68±54.94 a
	N3	384.65±5.31 a	141.81±1.42 a	64.51±0.27 c	27.20±0.08 a	9 567.66±101.85 b
B3	N0	235.21±3.27 c	125.72±0.46 b	78.81±1.57 a	28.10±0.19 a	6 545.81±106.37 c
	N1	335.77±1.74 b	140.96±2.32 a	72.58±0.08 bc	28.41±0.24 a	9 755.82±119.61 b
	N2	331.32±2.85 b	141.11±2.89 a	78.53±1.40 ab	28.30±0.15 a	10 384.47±115.25 ab
	N3	385.35±1.60 a	143.43±3.29 a	67.67±0.52 c	28.35±0.03 a	10 600.21±107.08 a

播期 Sowing date	施氮量 Nitrogen rate	氮素偏生产力 N partial productivity/ (kg·kg^-1)	氮素农学效率 Agronomic N use efficiency/(kg·kg^-1)	氮素生理效率 N physiological efficiency/(kg·kg^-1)	氮素吸收利用率 N uptake and utilization efficiency/%	氮素籽粒生产效率 N use efficiency in grain/(kg·kg^-1)
B1	N0	—	—	—	—	59.50±1.57 a
	N1	50.19±0.64 a	21.09±0.02 a	61.47±1.28 a	34.32±0.74 b	60.29±0.41 a
	N2	34.51±0.43 b	15.10±0.01 b	32.21±0.40 b	46.87±0.22 a	43.40±0.29 b
	N3	24.80±0.31 c	10.25±0.62 c	33.86±1.76 b	30.26±0.26 b	45.33±0.25 b
B2	N0	—	—	—	—	74.82±0.64 a
	N1	51.69±0.58 a	14.53±0.01 a	45.99±0.19 b	31.60±0.11 a	63.61±0.53 b
	N2	39.08±0.21 b	14.31±0.58 a	50.06±2.56 a	28.61±0.31 b	63.34±0.87 b
	N3	26.58±0.29 c	8.01±0.57 b	29.33±1.69 c	27.27±0.36 b	51.02±0.36 c
B3	N0	—	—	—	—	72.34±0.75 a
	N1	54.20±0.67 a	17.84±0.08 a	43.97±0.21 b	40.57±0.36 a	59.67±0.30 b
	N2	38.46±0.43 b	14.22±0.04 b	50.41±0.96 a	28.21±0.47 b	62.32±0.97 b
	N3	29.45±0.30 c	11.26±0.00 c	46.53±0.72 b	24.22±0.37 c	59.68±0.87 b

播期 Sowing date	施氮量 Nitrogen rate	氮素偏生产力 N partial productivity/ (kg·kg^-1)	氮素农学效率 Agronomic N use efficiency/(kg·kg^-1)	氮素生理效率 N physiological efficiency/(kg·kg^-1)	氮素吸收利用率 N uptake and utilization efficiency/%	氮素籽粒生产效率 N use efficiency in grain/(kg·kg^-1)
B1	N0	—	—	—	—	59.50±1.57 a
	N1	50.19±0.64 a	21.09±0.02 a	61.47±1.28 a	34.32±0.74 b	60.29±0.41 a
	N2	34.51±0.43 b	15.10±0.01 b	32.21±0.40 b	46.87±0.22 a	43.40±0.29 b
	N3	24.80±0.31 c	10.25±0.62 c	33.86±1.76 b	30.26±0.26 b	45.33±0.25 b
B2	N0	—	—	—	—	74.82±0.64 a
	N1	51.69±0.58 a	14.53±0.01 a	45.99±0.19 b	31.60±0.11 a	63.61±0.53 b
	N2	39.08±0.21 b	14.31±0.58 a	50.06±2.56 a	28.61±0.31 b	63.34±0.87 b
	N3	26.58±0.29 c	8.01±0.57 b	29.33±1.69 c	27.27±0.36 b	51.02±0.36 c
B3	N0	—	—	—	—	72.34±0.75 a
	N1	54.20±0.67 a	17.84±0.08 a	43.97±0.21 b	40.57±0.36 a	59.67±0.30 b
	N2	38.46±0.43 b	14.22±0.04 b	50.41±0.96 a	28.21±0.47 b	62.32±0.97 b
	N3	29.45±0.30 c	11.26±0.00 c	46.53±0.72 b	24.22±0.37 c	59.68±0.87 b

Effects of sowing date and nitrogen application rate on grain yield and nitrogen utilization of rice variety Nanjing 9108

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