Crops ›› 2022, Vol. 38 ›› Issue (4): 255-261.doi: 10.16035/j.issn.1001-7283.2022.04.036

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Effects of Nitrogen Fertilizer Combined with Nano-Magnesium on Rice Yield, Grain Quality and Nitrogen Use Efficiency

Zhang Haipeng(), Chen Zhiqing, Wang Rui, Lu Hao, Cui Peiyuan, Yang Yanju(), Zhang Hongcheng   

  1. Innovation Center of Rice Cultivation Technology in Yangtze River Valley of Ministry of Agriculture and Rural Affairs/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation for Modern Production Technology of Grain Crops/Research Institute of Rice Industrial Engineering Technology, Yangzhou University, Yangzhou 225009, Jiangsu, China
  • Received:2022-02-07 Revised:2022-02-21 Online:2022-08-15 Published:2022-08-22
  • Contact: Yang Yanju E-mail:hpzhang@yzu.edu.cn;yangyanju@yzu.edu.cn

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Abstract:

With rice variety Nanjing 9108 as experimental material, the effects of nano-Mg (12kg Mg/ha) on rice yield, grain quality and nitrogen use efficiency under four N fertilizer application rates (0, 225, 270, and 315kg N/ha) using pot-soil experiment in 2019 and 2020 on the farm of Yangzhou University. The results showed that there were remarkable increases in rice yield and N use efficiency after exogenously applying nano-Mg. Under the same N rate, the rice yields were 2.85%-8.86% and 5.22%-7.16% higher in nano-Mg treatments than in those treatments without exogenously magnesium in two years. The panicle number and spikelets per panicle were significant increased. Rice quality was enhanced in nano-Mg treatments, with nitrogen utilisation efficiency rising by 4.18% to 5.97%. In nano-Mg treatments, the head rice rate and protein content both increased by 3.51% and 6.26%, respectively, while the chalkiness grain rate, chalkiness degree, and amylose content all decreased by 2.45%, 2.40%, and 4.30%, respectively, the glue consistency change was not obvious. Compared with the treatments without nano-Mg, the taste value, peak viscosity, hot slurry viscosity and break down value increased by 0.79%, 1.35%, 1.64% and 0.48%, respectively, and the final viscosity decreased by 0.66%, without reaching a significant difference. Considering both yield and quality, the application of nano-Mg is beneficial to the high yield and high quality cultivation of rice at 225-270kg/ha N fertilizer application rate.

Key words: Rice, Nano-magnesium, Grain quality, Yield, Nitrogen use efficiency

Table 1

Effects of nano-magnesium fertilizer on rice yield and its components under different N application rates"

年份
Year		 镁肥处理
Mg treatment		 氮肥处理
N treatment		 穗数
Panicle (×104/hm2)		 穗粒数
Grains per panicle		 结实率
Seed-setting rate (%)		 千粒重
1000-grain weight (g)		 产量（g/盆）
Yield (g/pot)
2019 Non-Mg 0N 269.7d 106.4e 91.50a 27.24a 249.3d
15N 374.6b 122.1c 92.11a 27.28a 386.0c
18N 379.1b 128.9b 92.41a 27.37a 397.2c
21N 390.0ab 133.5ab 92.51a 27.54a 426.8b
Nano-Mg 0N 298.9c 113.8d 93.02a 27.45a 256.4d
15N 386.4ab 126.2bc 92.71a 27.67a 415.2b
18N 395.6a 133.5ab 92.62a 27.78a 432.4ab
21N 401.4a 135.7a 92.76a 27.65a 445.2a
2020 Non-Mg 0N 263.8d 105.5d 90.69a 26.43a 233.8d
15N 362.9b 122.8b 90.28a 26.47a 378.4c
18N 373.6b 127.1b 90.58a 26.56a 385.6c
21N 379.9ab 130.2ab 90.68a 26.73a 414.0b
Nano-Mg 0N 294.1c 112.6c 91.17a 26.64a 246.0d
15N 373.1b 126.8b 90.88a 26.86a 404.4b
18N 386.7ab 132.5a 91.38a 26.77a 413.2b
21N 392.8a 133.5a 91.25a 26.84a 436.8a

Table 2

Effects of nano-magnesium fertilizer on rice processing quality under different N application rates"

镁肥处理
Mg treatment		 氮肥处理
N treatment		 糙米率Brown rice rate (%) 精米率Milled rice rate (%) 整精米率Head rice rate (%)
2019 2020 2019 2020 2019 2020
Non-Mg 0N 81.98c 81.77c 71.18d 71.06c 63.86e 61.86e
15N 83.69b 83.55b 73.68b 73.31b 65.90d 63.77d
18N 83.81b 83.42b 73.76b 73.38b 67.65c 65.44c
21N 84.07ab 83.84ab 74.36b 73.98b 67.80bc 66.34bc
Nano-Mg 0N 82.56c 82.47c 72.39c 72.02c 65.75d 63.60d
15N 84.33ab 84.24ab 74.97ab 74.58ab 68.39b 66.21bc
18N 84.61a 84.37a 75.45a 75.06a 70.41a 67.18b
21N 84.75a 84.62a 75.63a 75.25a 70.30a 69.20a

Table 3

Effects of nano-magnesium fertilizer on rice appearance quality under different N application rates"

镁肥处理
Mg treatment		 氮肥处理
N treatment		 籽粒长宽比Whole rice length/width 垩白粒率Chalkiness grain rate (%) 垩白度Chalkiness degree (%)
2019 2020 2019 2020 2019 2020
Non-Mg 0N 1.683a 1.672a 16.46a 16.36a 24.56a 25.05a
15N 1.695a 1.673a 12.83b 13.38b 19.54b 19.50b
18N 1.688a 1.676a 12.12c 11.34d 18.71cd 19.08bc
21N 1.699a 1.667a 12.79b 12.36c 19.12bc 18.48c
Nano-Mg 0N 1.684a 1.702a 15.94a 16.25a 24.15a 24.62a
15N 1.662a 1.659a 12.62bc 12.86bc 18.99c 17.96c
18N 1.678a 1.694a 11.85c 11.69cd 18.47d 17.99c
21N 1.697a 1.695a 12.17c 11.59d 18.38d 19.55b

Table 4

Effects of nano-magnesium fertilizer on rice cooking and nutritional quality under different N application rates"

镁肥处理
Mg treatment		 氮肥处理
N treatment		 直链淀粉含量Amylose content (%) 蛋白质含量Protein content (%) 胶稠度Adhesive strength (mm)
2019 2020 2019 2020 2019 2020
Non-Mg 0N 12.79a 13.45a 7.01d 6.30d 75.37d 71.80d
15N 11.84b 12.96ab 8.12b 7.37b 82.16c 78.69c
18N 11.71b 12.95ab 8.38b 7.63b 84.23b 80.74b
21N 11.54b 12.66b 8.40b 7.64b 86.25a 82.66a
Nano-Mg 0N 12.63a 12.32b 7.47c 6.73c 75.83d 72.44d
15N 11.63b 12.22b 8.66ab 7.88ab 82.41c 78.93c
18N 11.41b 11.92b 8.81a 8.03a 84.15b 81.62ab
21N 11.34b 12.02b 8.99a 8.08a 86.72a 82.91a

Table 5

Effects of nano-magnesium fertilizer on rice eating quality under different N application rates"

年份Year 镁肥处理Mg treatment 氮肥处理N treatment 外观Appearance 硬度Hardness 黏度Stickiness 平衡度Balance 食味值Taste value
2019 Non-Mg 0N 9.1a 5.5d 9.4a 9.1a 88.2b
15N 8.3bc 6.0bc 8.7b 8.3bc 81.8cd
18N 8.2c 6.2ab 8.7b 8.2c 80.3d
21N 7.7d 6.3a 8.2c 7.7d 77.0e
Nano-Mg 0N 9.2a 5.4d 9.5a 9.2a 89.7a
15N 8.4b 5.9c 8.8b 8.4b 82.8c
18N 8.3bc 6.1b 8.8b 8.3bc 81.1d
21N 7.8d 6.3a 8.3c 7.7d 77.3e
2020 Non-Mg 0N 9.2a 5.3d 9.5a 9.1a 89.3a
15N 8.4c 5.9b 8.9b 8.4c 83.1b
18N 8.3c 6.0ab 8.9b 8.4c 81.6c
21N 7.9d 6.1a 8.3c 7.9d 78.2d
Nano-Mg 0N 9.2a 5.3d 9.6a 9.2a 89.6a
15N 8.6b 5.7c 9.0b 8.6b 84.1b
18N 8.4c 5.9b 9.0b 8.4c 81.7c
21N 7.9d 6.1a 8.4c 7.9d 78.5d

Table 6

Effects of nano-magnesium fertilizer on RVA profile characteristics under different N application rates"

年份
Year		 镁肥处理
Mg treatment		 氮肥处理
N treatment		 峰值黏度
Peak viscosity
(cP)		 热浆黏度
Trough viscosity
(cP)		 崩解值
Breakdown
(cP)		 最终黏度
Final viscosity
(cP)		 消减值
Setback
(cP)		 回复值
Consistence
(cP)		 糊化温度
Pasting temperature
(℃)
2019 Non-Mg 0N 4252a 2678a 1574a 3418a -834c 740b 75.1a
15N 4045bc 2539bc 1506b 3282b -763b 743b 75.2a
18N 3943cd 2447cd 1496b 3227bc -716ab 780ab 75.2a
21N 3880d 2386d 1494b 3204bc -676a 818a 75.5a
Nano-Mg 0N 4316a 2723a 1593a 3408a -908d 685c 75.6a
15N 4105b 2572b 1533ab 3263b -842c 691c 76.0a
18N 3991c 2475c 1516b 3202bc -789bc 727bc 75.6a
21N 3927cd 2418cd 1509b 3166c -761b 748b 75.1a
2020 Non-Mg 0N 4394a 2781b 1545b 3503a -891c 722b 75.7a
15N 4206bc 2665c 1547b 3378b -828bc 713b 75.9a
18N 4127c 2569cd 1563ab 3320bc -807b 751ab 75.6a
21N 4029c 2505d 1603a 3296bc -733a 791a 75.2a
Nano-Mg 0N 4494a 2891a 1524b 3511a -983d 620c 74.8a
15N 4263b 2700bc 1558ab 3358b -905c 658c 75.3a
18N 4144bc 2597cd 1541b 3293bc -851bc 696bc 75.0a
21N 4083c 2538d 1613a 3255c -828bc 717b 75.8a

Fig.1

Effects of nano-magnesium fertilizer on rice N fertilizer use efficiency"

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