蒲石林,
邓飞,,
王丽,
胡慧,
廖爽,
李武,
任万军,
四川农业大学农学院/农业部西南作物生理生态与耕作重点实验室 温江 611130
基金项目: 国家自然科学基金项目31871564
国家粮食丰产增效科技创新专项课题2018YFD0301204
四川省育种攻关项目2016NYZ0051
详细信息
作者简介:李书先, 主要研究方向为水稻高产优质栽培。E-mail:2534619749@qq.com
通讯作者:邓飞, 主要研究方向为水稻高产优质栽培, E-mail:273634096@qq.com
任万军, 主要研究方向为水稻优质高产及机械化栽培, E-mail:rwjun@126.com
中图分类号:S511.3+2计量
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出版历程
收稿日期:2018-12-16
录用日期:2016-02-28
刊出日期:2019-07-01
Influence of optimized nitrogen management on the quality of medium hybrid rice under different ecological conditions
LI Shuxian,PU Shilin,
DENG Fei,,
WANG Li,
HU Hui,
LIAO Shuang,
LI Wu,
REN Wanjun,
College of Agronomy, Sichuan Agricultural University/Key Laboratory of Crop Physiology, Ecology, and Cultivation in Southwest, Ministry of Agriculture, Wenjiang 611130, China
Funds: the National Natural Science Foundation of China31871564
the National Science and Technology Innovation Project for Grain Yield Enhancement of China2018YFD0301204
Sichuan Breeding Program2016NYZ0051
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Corresponding author:DENG Fei, E-mail: 273634096@qq.com;REN Wanjun, E-mail:rwjun@126.com
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摘要
摘要:在四川省温江和射洪试验点，采用单因素随机区组试验设计，以‘F优498’水稻品种为试验材料，研究了不同氮肥处理[普通尿素优化施肥、减氮15%优化施肥、增氮15%优化施肥，PASP（聚天门冬氨酸）尿素1次施肥、2次施和优化施肥]对稻米品质的影响。结果显示，温江的碾米品质、外观品质和籽粒粗蛋白含量较优；射洪的峰值黏度和崩解值较高，消减值较低，蒸煮食味品质较好，同时直链淀粉含量较高。随着氮肥的施用，稻米碾米品质、直链淀粉含量和籽粒粗蛋白含量显著提高，崩解值显著降低；同时导致射洪生态点的峰值黏度增加，消减值减少；温江生态点的稻米外观品质变优，峰值黏度减小，消减值增加。较农民经验性施肥处理，普通尿素优化处理和PASP尿素处理提高了直链淀粉含量和籽粒粗蛋白含量，降低了温江垩白粒率和垩白度，改善了外观品质；氮肥优化处理降低了峰值黏度和崩解值，提高了消减值，使稻米蒸煮食味品质变差，同时提高了射洪精米率和温江整精米率。较优化施肥处理，PASP尿素处理降低了两试验点的精米率、整精米率和温江垩白粒率，增加了射洪的垩白粒率和垩白度，使外观品质变差；同时PASP尿素1次施肥和2次施肥处理降低了直链淀粉含量和籽粒粗蛋白含量；PASP尿素优化施肥处理降低了两试验点的峰值黏度、崩解值和温江直链淀粉含量，提高了两试验点的籽粒粗蛋白含量和射洪直链淀粉含量。较优化施肥处理，减氮15%和增氮15%优化施肥处理降低了两试验点的直链淀粉含量、整精米率及温江垩白粒率，增加了射洪垩白粒率和垩白度。与PASP尿素1次和2次施肥相比，PASP尿素优化施肥显著降低了垩白度、峰值黏度和崩解值，增加了消减值和籽粒粗蛋白含量；同时导致射洪生态点的整精米率降低，垩白粒率和直链淀粉含量增加；温江生态点的垩白粒率降低，整精米率增加。综合稻米碾米品质、外观品质、淀粉RVA、直链淀粉含量和籽粒粗蛋白含量的关系，射洪PASP尿素2次施肥处理稻米综合品质较好，温江优化施肥处理稻米综合品质较好。
Abstract:The effects of different nitrogen (N) treatments on rice quality were studied at two different ecological sites (Wenjiang and Shehong), using single-factor experiment with a randomized block design and 'F You 498' as the test material. The results showed that the milling quality, appearance, and grain crude protein content were better in the Wenjiang rice. In the Shehong rice, the peak viscosity and breakdown viscosity were higher and the setback viscosity was lower; the cooking and eating qualities were better and the amylose content was higher. With N fertilizer applied, the rice milling quality and amylose and grain crude protein contents were significantly increased, and the breakdown viscosity was significantly decreased. At the same time, N fertilization increased the peak viscosity and reduced the setback viscosity of Shehong rice, whereas it improved the appearance, decreased the peak viscosity, and increased the reduction value of Wenjiang rice. Compared with the fertilization practices of farmers, the optimal N fertilizer treatments (ONM1:optimized N management; ONM-N1:optimized N management with 15% N reduction; and ONM+N1:optimized N management with 15% N increase) and optimized N management of polyaspartic acid-urea (PASP-urea) treatment increased the amylose and grain crude protein contents. Optimal N fertilizer treatment reduced the chalky rice rate and chalkiness ratio, and improved the appearance of Wenjiang rice. At both ecological sites, the optimal N fertilizer treatment reduced the peak viscosity and breakdown viscosity, increased the setback viscosity, and worsened the cooking and eating qualities of the rice. At the same time, it increased the milled rice rate of Shehong rice and the head rice rate of Wenjiang rice. In comparison with the ONM1 treatment, PASP-urea treatment reduced the milled rice ratios and head rice rates of the two types of rice and the chalky rice rate of Wenjiang rice, whereas it increased the chalky rice rate and chalkiness ratio of Shehong rice, worsening its appearance. At the same time, PASP-urea applied at the basal stage only and spilt-applied at the basal stage and at panicle initiation reduced the amylose and grain crude protein contents. Optimized N management of PASP-urea treatment reduced the peak viscosity and breakdown viscosity of the two rice types and the amylose content of Wenjiang rice, whereas it increased the grain crude protein contents of the two rice types and the amylase content of Shehong rice. Compared with the OMN1 treatment, the ONM-N1 and ONM+N1 treatments reduced the amylose contents and the head rice rates of the two rice types and the chalky rice rate of Wenjiang rice, whereas they increased the chalky rice rate and chalkiness ratio of Shehong rice. Compared with that of PASP-urea applied at the basal stage alone and spilt-applied at the basal stage and at panicle initiation, optimized N management of PASP-urea treatment significantly decreased the chalkiness ratio, peak viscosity, and breakdown viscosity, and increased the setback viscosity and grain crude protein contents. At the same time, it reduced the head rice rate and increased the chalky rice rate and amylose content in Wenjiang rice, whereas it reduced the chalky rice rate and increased the head rice rate in Shehong rice. Overall, in terms of the milling quality, appearance, starch RVA, amylose content, and grain crude protein content, the two applications of PASP-urea fertilizer treatment resulted in better comprehensive qualities in Shehong rice, whereas optimized N fertilization treatment gave better comprehensive qualities in Wenjiang rice.
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图1温江和射洪试验点水稻生育期主要气象资料[14]
Figure1.Main meteorological data of rice growth period in the two ecological sites of Wenjiang and Shehong[14]
下载: 全尺寸图片幻灯片表1温江和射洪试验点0~30 cm土壤基础肥力
Table1.Properties of the top soil (0–30 cm) of the two ecological sites of Wenjiang and Shehong
| 项目Item | 射洪 Shehong | 温江 Wenjiang |
| 土壤类型 Soil texture | 重壤土 Heavy loam | 中壤土 Medium loam |
| 有机质Organic matter (g?kg-1) | 13.4 | 30.2 |
| 全氮Total N (g?kg-1) | 0.5 | 1.6 |
| 全磷Total P (g?kg-1) | 0.4 | 0.7 |
| 全钾Total K (g?kg-1) | 8.2 | 18.2 |
| 碱解氮 Alkali-hydrolysis N (mg?kg-1) | 47.0 | 136.4 |
| 速效磷Olsen-P (mg?kg-1) | 6.2 | 18.0 |
| 速效钾Available K (mg?kg-1) | 124.5 | 60.5 |
下载: 导出CSV表2各处理氮肥施肥措施
Table2.Application of nitrogen fertilizer for each treatment
| kg?hm-2 | |||||||
| 处理 Treatment | 尿素种类 Urea type | 基肥 Basal | 分蘖肥 Tillering | 促花肥 Panicle initiation | 保花肥 Spikelet differentiation | 总量 Total | |
| CK | 对照Control | 普通尿素 Conventional urea | — | — | — | — | — |
| FFP1 | 农民经验性施肥Farmers’ fertilizer practice | 126.0 | 54.0 | 0.0 | 0.0 | 180.0 | |
| ONM1 | 优化施肥Optimized N management | 63.0 | 27.0 | 54.0 | 36.0 | 180.0 | |
| ONM-N1 | 减氮15%优化施肥Optimized N management with 15% N reduction | 53.5 | 23.0 | 46.0 | 30.5 | 153.0 | |
| ONM+N1 | 增氮15%优化施肥Optimized N management with 15% N increase | PASP尿素 Polyaspartic acid urea | 72.5 | 31.0 | 62.0 | 41.5 | 207.0 |
| PASPT1 | PASP尿素1次施肥PASP-urea single applied at basal | 180.0 | 0.0 | 0.0 | 0.0 | 180.0 | |
| PASPT2 | PASP尿素2次施肥PASP-urea spilt-applied at basal and panicle initiation | 126.0 | 0.0 | 54.0 | 0.0 | 180.0 | |
| ONM2 | PASP尿素优化施肥Optimized N management of PASP-urea | 63.0 | 27.0 | 54.0 | 36.0 | 180.0 | |
下载: 导出CSV表3氮肥管理对不同生态点稻米碾米品质的影响
Table3.Effect of nitrogen management on rice milling quality in different ecological sites
| 处理 Treatment | 糙米率Brown rice rate (%) | 精米率Milled rice rate (%) | 整精米率Head rice rate (%) | |||||
| 射洪Shehong | 温江Wenjiang | 射洪Shehong | 温江Wenjiang | 射洪Shehong | 温江Wenjiang | |||
| CK | 80.00b | 80.67b | 66.33d | 67.67b | 45.00d | 44.67e | ||
| FFP1 | 81.00a | 82.00a | 67.00cd | 68.00b | 54.67a | 52.00cd | ||
| ONM1 | 81.00a | 82.00a | 68.67a | 69.67a | 54.67a | 64.33a | ||
| ONM-N1 | 80.67ab | 82.00a | 68.33ab | 68.67ab | 48.00c | 56.33b | ||
| ONM+N1 | 81.00a | 82.33a | 68.33ab | 68.67ab | 51.67b | 58.00b | ||
| PASPT1 | 80.67ab | 82.00a | 67.00cd | 68.67ab | 52.00b | 54.33bc | ||
| PASPT2 | 80.67ab | 82.00a | 67.33c | 68.00b | 51.67b | 50.00d | ||
| ONM2 | 80.67ab | 82.00a | 67.67bc | 68.33ab | 48.33c | 63.33a | ||
| 平均Mean | 80.71 | 81.88 | 67.58 | 68.46 | 50.75 | 55.37 | ||
| F-value | 2.20 | 7.94** | 7.06** | 1.50 | 15.16** | 27.09** | ||
| 同列数据后不同小写字母表示不同氮肥处理间差异达5%显著水平。**表示1%显著水平。Values within a column followed by different lowercase letters are significantly different at P < 0.05 according to LSD test. **: significant at 1% probability level. | ||||||||
下载: 导出CSV表4氮肥管理对不同生态点稻米外观品质的影响
Table4.Effect of nitrogen management on appearance quality of rice in different ecological sites
| 处理 Treatment | 长宽比Length-width ratio | 垩白粒率Chalky rice rate (%) | 垩白度Chalkiness ratio | |||||
| 射洪Shehong | 温江Wenjiang | 射洪Shehong | 温江Wenjiang | 射洪Shehong | 温江Wenjiang | |||
| CK | 3.02ab | 2.92a | 74.33cd | 79.67ab | 21.93d | 20.20a | ||
| FFP1 | 3.02ab | 2.84a | 78.00ab | 81.67a | 23.20cd | 18.80ab | ||
| ONM1 | 3.03ab | 2.92a | 71.67d | 76.00bc | 22.42d | 13.82c | ||
| ONM-N1 | 3.04ab | 2.93a | 78.00ab | 64.00d | 27.03bc | 14.93bc | ||
| ONM+N1 | 2.93b | 2.84a | 75.33bc | 60.00d | 30.40ab | 12.99c | ||
| PASPT1 | 3.11a | 2.89a | 78.00ab | 73.00c | 31.45a | 15.52bc | ||
| PASPT2 | 3.05a | 2.85a | 80.67a | 60.33d | 29.12ab | 11.67c | ||
| ONM2 | 3.05a | 2.91a | 79.33a | 62.00d | 30.82ab | 12.86c | ||
| 平均Mean | 3.03 | 2.89 | 76.92 | 69.58 | 27.05 | 15.10 | ||
| F-value | 1.71 | 1.38 | 9.20** | 25.43** | 8.56** | 3.88* | ||
| 同列数据后不同小写字母表示不同氮肥处理间差异达5%显著水平。*和**分别表示5%和1%显著水平。Values within a column followed by different lowercase letters are significantly different at P < 0.05 according to LSD test. * and ** mean significance at 5% and 1% probability level. | ||||||||
下载: 导出CSV表5氮肥管理对不同生态点稻米RVA谱特征值的影响
Table5.Effect of nitrogen management on RVA profile characteristic values of rice in different ecological sites
| 生态点 Ecological site | 处理 Treatment | 峰值黏度 PKV | 热浆黏度 HTV | 冷胶黏度 CPV | 崩解值 BDV | 消减值 SBV | 峰值时间 PeT | 糊化温度 PaT | 回复值 CSV |
| 射洪 Shehong | CK | 364.75c | 203.58c | 367.69a | 161.17a | -0.84a | 5.55a | 81.12a | 164.11a |
| FFP1 | 382.03a | 221.59ab | 365.44a | 160.44a | -16.59b | 5.55a | 81.02ab | 143.86bc | |
| ONM1 | 369.55bc | 225.72ab | 364.61ab | 143.83d | -4.95a | 5.55a | 80.82ab | 138.89bc | |
| ONM-N1 | 366.58c | 220.86ab | 360.17bc | 145.72cd | -6.42a | 5.55a | 80.68ab | 139.31bc | |
| ONM+N1 | 362.00c | 221.89ab | 355.97c | 140.11d | -6.03a | 5.58a | 81.10ab | 134.08c | |
| PASPT1 | 386.22a | 229.72a | 366.75a | 156.50ab | -19.47b | 5.53a | 80.75ab | 137.03bc | |
| PASPT2 | 379.61ab | 225.86ab | 363.19ab | 153.75abc | -16.42b | 5.51a | 80.43b | 137.33bc | |
| ONM2 | 366.64c | 217.56b | 364.14ab | 149.09bcd | -7.71a | 5.55a | 80.70ab | 146.58b | |
| 平均Mean | 372.15 | 220.85 | 363.50 | 151.33 | -9.80 | 5.55 | 80.83 | 142.65 | |
| F-value | 5.66** | 4.32** | 6.27** | 6.22** | 6.87** | 0.78 | 1.12 | 5.55** | |
| 温江 Wenjiang | CK | 381.22a | 233.20a | 374.56ab | 148.03a | -6.67e | 5.62abc | 79.98ab | 141.36b |
| FFP1 | 369.19b | 225.95abc | 370.50bcd | 143.25ab | 1.31d | 5.55c | 79.87ab | 144.55b | |
| ONM1 | 348.78cd | 222.56bc | 366.22de | 126.22cd | 17.45c | 5.60bc | 79.68b | 143.67b | |
| ONM-N1 | 352.47c | 224.97bc | 368.78cd | 127.50c | 16.31c | 5.65ab | 79.90ab | 143.81b | |
| ONM+N1 | 345.36d | 224.89bc | 369.50bcd | 120.47d | 24.14b | 5.69a | 80.47a | 144.61b | |
| PASPT1 | 349.83cd | 220.50c | 375.94a | 129.33c | 26.11b | 5.60bc | 79.97ab | 155.44a | |
| PASPT2 | 369.67b | 230.00ab | 373.67abc | 139.66b | 4.00d | 5.62abc | 79.87ab | 143.67b | |
| ONM2 | 322.56e | 218.20c | 362.56e | 104.36e | 40.00a | 5.67ab | 80.18ab | 144.36b | |
| 平均Mean | 354.86 | 225.03 | 370.22 | 129.85 | 15.33 | 5.63 | 79.99 | 145.18 | |
| F-value | 62.47** | 3.32* | 48.92** | 6.40** | 82.88** | 2.47 | 0.94 | 2.68 | |
| 同列数据后不同小写字母表示不同氮肥处理间差异达5%显著水平。*和**分别表示5%和1%显著水平。Values within a column followed by different lowercase letters are significantly different at P < 0.05 according to LSD test. * and ** mean significance at 5% and 1% probability level. PKV: peak viscosity; HTV: hot paste viscosity; CPV: cool paste viscosity; BDV: breakdown viscosity; SBV: setback viscosity; PeT: peak time; PaT: pasting temperature; CSV: consistence viscosity. | |||||||||
下载: 导出CSV表6氮肥管理对不同生态点稻米直链淀粉含量和粗蛋白含量的影响
Table6.Effect of nitrogen management on amylose and crude protein contents of rice in different ecological sites
| 处理 Treatment | 直链淀粉含量Amylose content (%) | 粗蛋白含量Crude protein content (mg?g-1) | |||
| 射洪hehong | 温江Wenjiang | 射洪Shehong | 温江Wenjiang | ||
| CK | 18.97c | 16.55f | 48.33h | 49.19f | |
| FFP1 | 19.72c | 19.42d | 52.76f | 61.68d | |
| ONM1 | 24.38ab | 23.15a | 58.07c | 66.05b | |
| ONM-N1 | 23.71b | 22.64ab | 55.24d | 63.67c | |
| ONM+N1 | 23.58b | 21.58c | 61.88a | 67.83a | |
| PASPT1 | 23.84b | 17.73e | 53.99e | 59.40e | |
| PASPT2 | 19.51c | 22.24b | 51.49g | 64.66c | |
| ONM2 | 25.48a | 21.24c | 59.32b | 68.82a | |
| 平均Mean | 21.90 | 20.57 | 55.14 | 62.66 | |
| F-value | 70.06** | 91.29** | 151.24** | 223.57** | |
| 同列数据后不同小写字母表示不同氮肥处理间差异达5%显著水平。**表示1%显著水平。Values within a column followed by different lowercase letters are significantly different at P < 0.05 according to LSD test. **: significant at 1% probability level. | |||||
下载: 导出CSV表7稻米淀粉RVA谱特征值与其他指标的相关性
Table7.Relationship among spectrum characteristics of starch RVA and other quality indicators of rice
| 峰值黏度 PKV | 热浆黏度 HTV | 冷胶黏度 CPV | 崩解值 BDV | 消减值 SBV | 峰值时间 PeT | 糊化温度 PaT | 回复值 CSV | |
| 糙米率 BR | -0.64** | 0.31 | 0.36 | -0.81** | 0.76** | -0.71** | -0.02 | 0.71** |
| 精米率 MR | -0.60* | 0.28 | 0.01 | -0.75** | 0.61** | -0.56* | -0.25 | 0.52* |
| 整精米率 HMR | -0.61** | -0.07 | -0.25 | -0.62** | 0.54* | -0.17 | -0.12 | 0.32 |
| 长宽比 AR | 0.52* | -0.21 | -0.48 | 0.64** | -0.68** | 0.65** | -0.16 | -0.72** |
| 垩白度 CD | 0.63** | -0.07 | -0.58* | 0.70** | -0.81** | 0.69** | -0.36 | -0.78** |
| 垩白粒率 CR | 0.64** | -0.02 | -0.20 | 0.69** | -0.69** | 0.25 | -0.36 | -0.81** |
| 直链淀粉含量 AC | -0.02 | -0.06 | -0.47 | 0.00 | -0.14 | 0.20 | -0.28 | -0.18 |
| 粗蛋白含量 CPC | -0.76** | 0.13 | -0.03 | -0.86** | 0.74** | -0.46 | -0.14 | 0.68** |
| **表示1%显著水平; *表示5%显著水平。**: significant at 1% probability level; *: significant at 5% probability level. BR: brown rice rate; MR: milled rice rate; HMR: head milled rice rate; AR: aspect ratio; CD: chalkiness degree; CR: chalkiness rate; AC: amylose content; CPC: crude protein content; PKV: peak viscosity; HTV: hot paste viscosity; CPV: cool paste viscosity; BDV: breakdown viscosity; SBV: setback viscosity; PeT: peak time; PaT: pasting temperature; CSV: consistence viscosity. | ||||||||
下载: 导出CSV参考文献
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