中国水稻科学 ›› 2016, Vol. 30 ›› Issue (2): 193-199.DOI: 10.16819/j.1001-7216.2016.5039
习敏1,2, 林赵淼1, 赵艳岭1, 张新城1, 杨小雨1, 刘正辉1,*(), 李刚华1, 王绍华1, 丁艳锋1
收稿日期:
2015-03-04
修回日期:
2015-09-06
出版日期:
2016-03-10
发布日期:
2016-03-10
通讯作者:
刘正辉
基金资助:
Min XI1,2, Zhao-miao LIN1, Yan-ling ZHAO1, Xin-cheng ZHANG1, Xiao-yu YANG1, Zheng-hui LIU1,*(), Gang-hua LI1, Shao-hua WANG1, Yan-feng DING1
Received:
2015-03-04
Revised:
2015-09-06
Online:
2016-03-10
Published:
2016-03-10
Contact:
Zheng-hui LIU
摘要:
为探讨不同类型垩白水稻对氮肥的响应差异,以武育粳3号的高腹白突变体(WBRK)和高心白突变体(WCRK)为材料,设置不施氮肥(对照)和两个不同的基肥与穗肥比例处理(N5-5和N10-0)共3个处理,分析施氮对腹白米和心白米的发生及籽粒生化组分的影响。结果表明,施用氮肥显著增加了腹白米率和心白米率,且腹白较心白更易受氮肥影响。施氮对WBRK籽粒总淀粉、直链淀粉和支链淀粉含量无显著影响,显著增加了WCRK籽粒淀粉组分的含量,改善了WBRK和WCRK的碾磨品质。与对照相比,N5-5处理显著增加了WBRK籽粒蛋白质及其组分中球蛋白、醇溶蛋白和谷蛋白含量以及WCRK籽粒蛋白质含量。N10-0处理显著降低了WBRK和WCRK籽粒中的蛋白质和谷蛋白含量。N5-5处理下,WBRK和WCRK籽粒中大多数氨基酸含量有所增加,但组氨酸和精氨酸含量有所降低,WCRK表现得更明显。研究表明,氮素对不同类型垩白水稻品种腹白和心白发生及籽粒贮藏物质积累的影响存在差异,显示出生产中采用不同调优栽培措施的必要性。
中图分类号:
习敏, 林赵淼, 赵艳岭, 张新城, 杨小雨, 刘正辉, 李刚华, 王绍华, 丁艳锋. 氮肥对粳稻籽粒腹白和心白发生及生化组成的影响[J]. 中国水稻科学, 2016, 30(2): 193-199.
Min XI, Zhao-miao LIN, Yan-ling ZHAO, Xin-cheng ZHANG, Xiao-yu YANG, Zheng-hui LIU, Gang-hua LI, Shao-hua WANG, Yan-feng DING. Effects of Nitrogen Fertilizer Application on the Formation of White-belly and White-core as Well as Biochemical Composition of japonica Rice Grains[J]. Chinese Journal OF Rice Science, 2016, 30(2): 193-199.
突变体 Mutant | 垩白米率 Percent of chalky grains/% | 垩白大小 Area of chalkiness/% | 垩白度 Degree of chalkiness/% | 腹白米率 Percent of white-belly rice gains/% | 心白米率 Percent of white-core rice gains/% |
---|---|---|---|---|---|
WBRK | 61.78±3.67 | 26.74±1.56 | 16.52±0.96 | 61.78±3.67 | 0.00±0.00 |
WCRK | 59.67±0.94 | 80.63±2.76 | 45.56±1.56 | 3.17±1.65 | 56.50±0.71 |
表1 供试材料的垩白性状
Table 1 Chalky characteristics of the materials used in the experiment.
突变体 Mutant | 垩白米率 Percent of chalky grains/% | 垩白大小 Area of chalkiness/% | 垩白度 Degree of chalkiness/% | 腹白米率 Percent of white-belly rice gains/% | 心白米率 Percent of white-core rice gains/% |
---|---|---|---|---|---|
WBRK | 61.78±3.67 | 26.74±1.56 | 16.52±0.96 | 61.78±3.67 | 0.00±0.00 |
WCRK | 59.67±0.94 | 80.63±2.76 | 45.56±1.56 | 3.17±1.65 | 56.50±0.71 |
突变体与处理 Mutant and treatment | 穗长 Panicle length /cm | 单位面积穗数 Number of panicles per 1m2 | 每穗粒数 Number of spikelets per panicle | 结实率 Seed-setting rate /% | 千粒重 1000-grain weight /g | 产量 Yield /(kg·hm-2) |
---|---|---|---|---|---|---|
WBRK | ||||||
对照CK | 14.46±0.3 c | 312.68±17.3 b | 89.41±5.3 b | 86.18±0.2 c | 27.38±0.5 a | 6614.38±816.1 b |
N5-5 | 17.16±0.4 a | 419.57±47.9 a | 111.80±4.0 a | 89.23±1.4 b | 26.20±0.4 b | 10991.99±1053.7 a |
N10-0 | 15.56±0.1 b | 440.86±14.3 a | 105.54±8.6 a | 91.71±2.2 a | 26.75±0.5 ab | 11383.11±469.9 a |
平均Mean | 15.73 | 391.04 | 102.25 | 89.04 | 26.78 | 9663.16 |
WCRK | ||||||
对照CK | 13.72±0.2 c | 308.10±15.4 b | 92.09±6.6 b | 78.70±1.4 b | 27.38±0.4 a | 6102.68±313.8 b |
N5-5 | 16.30±0.3 a | 430.21±31.1 a | 100.18±3.5 a | 86.16±1.0 a | 26.82±0.2 b | 9966.34±892.6 a |
N10-0 | 15.14±0.1 b | 420.82±58.0 a | 100.76±2.0 a | 85.99±1.3 a | 27.09±0.3 ab | 9896.93±1144.9 a |
平均Mean | 15.06 | 386.38 | 97.68 | 83.62 | 27.10 | 8655.32 |
表2 氮肥对水稻产量及构成因素的影响
Table 2 Effect of nitrogen application on grain yield and its components.
突变体与处理 Mutant and treatment | 穗长 Panicle length /cm | 单位面积穗数 Number of panicles per 1m2 | 每穗粒数 Number of spikelets per panicle | 结实率 Seed-setting rate /% | 千粒重 1000-grain weight /g | 产量 Yield /(kg·hm-2) |
---|---|---|---|---|---|---|
WBRK | ||||||
对照CK | 14.46±0.3 c | 312.68±17.3 b | 89.41±5.3 b | 86.18±0.2 c | 27.38±0.5 a | 6614.38±816.1 b |
N5-5 | 17.16±0.4 a | 419.57±47.9 a | 111.80±4.0 a | 89.23±1.4 b | 26.20±0.4 b | 10991.99±1053.7 a |
N10-0 | 15.56±0.1 b | 440.86±14.3 a | 105.54±8.6 a | 91.71±2.2 a | 26.75±0.5 ab | 11383.11±469.9 a |
平均Mean | 15.73 | 391.04 | 102.25 | 89.04 | 26.78 | 9663.16 |
WCRK | ||||||
对照CK | 13.72±0.2 c | 308.10±15.4 b | 92.09±6.6 b | 78.70±1.4 b | 27.38±0.4 a | 6102.68±313.8 b |
N5-5 | 16.30±0.3 a | 430.21±31.1 a | 100.18±3.5 a | 86.16±1.0 a | 26.82±0.2 b | 9966.34±892.6 a |
N10-0 | 15.14±0.1 b | 420.82±58.0 a | 100.76±2.0 a | 85.99±1.3 a | 27.09±0.3 ab | 9896.93±1144.9 a |
平均Mean | 15.06 | 386.38 | 97.68 | 83.62 | 27.10 | 8655.32 |
突变体 Mutant | 处理 Treatment | 腹白米率 Percentage of white-belly rice/% | 心白米率 Percentage of white-core rice/% | 完善米率 Percentage of perfect rice/% | 其他米率 Percentage of other rice/% |
---|---|---|---|---|---|
WBRK | 对照CK | 47.29±1.9 b | 0.00±0.0 a | 51.88±2.2 a | 0.83±0.6 b |
N5-5 | 64.50±2.8 a | 0.00±0.0 a | 30.21±4.1 b | 5.29±2.1 a | |
N10-0 | 63.17±2.8 a | 0.00±0.5 a | 32.04±2.2 b | 4.79±1.2 a | |
平均Mean | 58.32 | 0.00 | 38.04 | 3.64 | |
WCRK | 对照CK | 3.50±1.4 c | 51.96±3.4 b | 43.46±4.0 a | 1.08±0.6 a |
N5-5 | 8.17±3.2 b | 58.46±4.0 a | 31.79±4.8 b | 1.58±1.0 a | |
N10-0 | 11.13±2.7 a | 54.38±3.1 b | 32.92±3.9 b | 1.58±1.4 a | |
平均Mean | 7.60 | 54.93 | 36.06 | 1.41 |
表3 不同氮肥处理下腹白米率和心白米率
Table 3 Percentages of white-belly and white-core rice grains under different Nitrogen treatments.
突变体 Mutant | 处理 Treatment | 腹白米率 Percentage of white-belly rice/% | 心白米率 Percentage of white-core rice/% | 完善米率 Percentage of perfect rice/% | 其他米率 Percentage of other rice/% |
---|---|---|---|---|---|
WBRK | 对照CK | 47.29±1.9 b | 0.00±0.0 a | 51.88±2.2 a | 0.83±0.6 b |
N5-5 | 64.50±2.8 a | 0.00±0.0 a | 30.21±4.1 b | 5.29±2.1 a | |
N10-0 | 63.17±2.8 a | 0.00±0.5 a | 32.04±2.2 b | 4.79±1.2 a | |
平均Mean | 58.32 | 0.00 | 38.04 | 3.64 | |
WCRK | 对照CK | 3.50±1.4 c | 51.96±3.4 b | 43.46±4.0 a | 1.08±0.6 a |
N5-5 | 8.17±3.2 b | 58.46±4.0 a | 31.79±4.8 b | 1.58±1.0 a | |
N10-0 | 11.13±2.7 a | 54.38±3.1 b | 32.92±3.9 b | 1.58±1.4 a | |
平均Mean | 7.60 | 54.93 | 36.06 | 1.41 |
突变体 Mutant | 处理 Treatment | 出糙率 Brown rice rate/% | 精米率 Milled rice rate/% | 整精米率 Head rice rate/% |
---|---|---|---|---|
WBRK | 对照CK | 81.63±0.4 b | 69.11±0.5 b | 65.54±0.8 a |
N5-5 | 84.34±0.4 a | 71.53±0.6 a | 65.97±1.2 a | |
N10-0 | 84.24±0.1 a | 71.39±0.5 a | 67.21±2.3 a | |
平均Mean | 83.40 | 70.68 | 66.24 | |
WCRK | 对照CK | 80.28±1.5 b | 67.38±1.5 b | 63.61±2.0 c |
N5-5 | 84.01±0.2 a | 70.52±0.5 a | 67.85±1.4 a | |
N10-0 | 84.19±0.4 a | 70.78±0.8 a | 65.95±2.3 b | |
平均Mean | 82.82 | 69.56 | 65.80 |
表4 氮肥对腹白米和心白米碾磨品质的影响
Table 4 Effect of nitrogen application on milling quality of white-belly and white-core rice.
突变体 Mutant | 处理 Treatment | 出糙率 Brown rice rate/% | 精米率 Milled rice rate/% | 整精米率 Head rice rate/% |
---|---|---|---|---|
WBRK | 对照CK | 81.63±0.4 b | 69.11±0.5 b | 65.54±0.8 a |
N5-5 | 84.34±0.4 a | 71.53±0.6 a | 65.97±1.2 a | |
N10-0 | 84.24±0.1 a | 71.39±0.5 a | 67.21±2.3 a | |
平均Mean | 83.40 | 70.68 | 66.24 | |
WCRK | 对照CK | 80.28±1.5 b | 67.38±1.5 b | 63.61±2.0 c |
N5-5 | 84.01±0.2 a | 70.52±0.5 a | 67.85±1.4 a | |
N10-0 | 84.19±0.4 a | 70.78±0.8 a | 65.95±2.3 b | |
平均Mean | 82.82 | 69.56 | 65.80 |
突变体 Mutant | 处理 Treatment | 总淀粉含量 Total tarch content/% | 直链淀粉含量 Amylose content /% | 支链淀粉含量 Amylopectin content/% | 直链淀粉/支链淀粉 Amylose/ Amylopectin | 蛋白质含量 Protein content /% |
---|---|---|---|---|---|---|
WBRK | 对照CK | 78.72±1.44 ab | 14.82±1.46 a | 63.89±1.13 ab | 0.23±0.03 a | 6.42±0.16 b |
N5-5 | 77.21±0.79 b | 14.68±1.36 a | 62.53±2.34 b | 0.24±0.03 a | 6.77±0.15 a | |
N10-0 | 79.86±1.84 a | 14.91±1.24 a | 64.95±1.09 a | 0.23±0.02 a | 5.98±0.04 c | |
平均Mean | 78.59 | 14.80 | 63.79 | 0.23 | 6.39 | |
WCRK | 对照CK | 78.42±2.12 b | 15.19±0.41 b | 63.22±2.12 b | 0.24±0.01 b | 6.48±0.18 a |
N5-5 | 82.63±1.20 a | 16.69±0.68 a | 65.88±1.12 a | 0.26±0.01 ab | 6.71±0.14 a | |
N10-0 | 84.27±1.53 a | 17.33±0.38 a | 66.94±1.55 a | 0.26±0.01 a | 5.92±0.18 b | |
平均Mean | 81.77 | 16.40 | 65.35 | 0.25 | 6.37 |
表5 不同氮肥处理下籽粒生化组分分析
Table 5 Grain chemical composition in seeds under nitrogen fertilizer application.
突变体 Mutant | 处理 Treatment | 总淀粉含量 Total tarch content/% | 直链淀粉含量 Amylose content /% | 支链淀粉含量 Amylopectin content/% | 直链淀粉/支链淀粉 Amylose/ Amylopectin | 蛋白质含量 Protein content /% |
---|---|---|---|---|---|---|
WBRK | 对照CK | 78.72±1.44 ab | 14.82±1.46 a | 63.89±1.13 ab | 0.23±0.03 a | 6.42±0.16 b |
N5-5 | 77.21±0.79 b | 14.68±1.36 a | 62.53±2.34 b | 0.24±0.03 a | 6.77±0.15 a | |
N10-0 | 79.86±1.84 a | 14.91±1.24 a | 64.95±1.09 a | 0.23±0.02 a | 5.98±0.04 c | |
平均Mean | 78.59 | 14.80 | 63.79 | 0.23 | 6.39 | |
WCRK | 对照CK | 78.42±2.12 b | 15.19±0.41 b | 63.22±2.12 b | 0.24±0.01 b | 6.48±0.18 a |
N5-5 | 82.63±1.20 a | 16.69±0.68 a | 65.88±1.12 a | 0.26±0.01 ab | 6.71±0.14 a | |
N10-0 | 84.27±1.53 a | 17.33±0.38 a | 66.94±1.55 a | 0.26±0.01 a | 5.92±0.18 b | |
平均Mean | 81.77 | 16.40 | 65.35 | 0.25 | 6.37 |
突变体 Mutant | 处理 Treatment | 清蛋白含量 Albumin content/% | 球蛋白含量 Globulin content/% | 醇溶蛋白含量 Prolamin content/% | 谷蛋白含量 Glutelin content/% |
---|---|---|---|---|---|
WBRK | 对照CK | 0.73±0.03 a | 0.44±0.01b | 0.70±0.03 b | 4.55±0.12 b |
N5-5 | 0.72±0.02 a | 0.48±0.02 a | 0.77±0.02 a | 4.81±0.14 a | |
N10-0 | 0.70±0.01 a | 0.42±0.01 b | 0.72±0.02 b | 4.14±0.03 c | |
平均Mean | 0.72 | 0.45 | 0.73 | 4.50 | |
WCRK | 对照CK | 0.80±0.02 a | 0.44±0.01 ab | 0.76±0.03 a | 4.49±0.17 a |
N5-5 | 0.78±0.02 a | 0.45±0.02 a | 0.79±0.03 a | 4.70±0.11 a | |
N10-0 | 0.78±0.01 a | 0.43±0.01 b | 0.78±0.03 a | 3.94±0.16 b | |
平均Mean | 0.79 | 0.44 | 0.77 | 4.37 |
表6 不同氮肥处理对籽粒中蛋白质组分含量的影响
Table 6 Effects of nitrogen application level on grain protein composition.
突变体 Mutant | 处理 Treatment | 清蛋白含量 Albumin content/% | 球蛋白含量 Globulin content/% | 醇溶蛋白含量 Prolamin content/% | 谷蛋白含量 Glutelin content/% |
---|---|---|---|---|---|
WBRK | 对照CK | 0.73±0.03 a | 0.44±0.01b | 0.70±0.03 b | 4.55±0.12 b |
N5-5 | 0.72±0.02 a | 0.48±0.02 a | 0.77±0.02 a | 4.81±0.14 a | |
N10-0 | 0.70±0.01 a | 0.42±0.01 b | 0.72±0.02 b | 4.14±0.03 c | |
平均Mean | 0.72 | 0.45 | 0.73 | 4.50 | |
WCRK | 对照CK | 0.80±0.02 a | 0.44±0.01 ab | 0.76±0.03 a | 4.49±0.17 a |
N5-5 | 0.78±0.02 a | 0.45±0.02 a | 0.79±0.03 a | 4.70±0.11 a | |
N10-0 | 0.78±0.01 a | 0.43±0.01 b | 0.78±0.03 a | 3.94±0.16 b | |
平均Mean | 0.79 | 0.44 | 0.77 | 4.37 |
氨基酸 Amino acid | WBRK | WCRK | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
对照CK | N5-5 | N10-0 | ±N5-5 | ±N10-0 | 对照CK | N5-5 | N10-0 | ±N5-5 | ±N10-0 | ||
天冬氨酸Asp | 0.64 a | 0.69 a | 0.64 a | 0.05 | 0.00 | 0.62 a | 0.63 a | 0.59 b | 0.01 | -0.03 | |
苏氨酸Thr | 0.33 a | 0.36 a | 0.33 a | 0.03 | 0.00 | 0.32 a | 0.32 a | 0.31 b | 0.00 | -0.01 | |
丝氨酸Ser | 0.44 a | 0.49 a | 0.46 a | 0.05 | 0.02 | 0.43 a | 0.43 a | 0.41 a | 0.00 | -0.02 | |
谷氨酸Glu | 1.54 a | 1.71 a | 1.58 a | 0.17 | 0.04 | 1.50 a | 1.52 a | 1.45 b | 0.02 | -0.05 | |
甘氨酸Gly | 0.36 a | 0.39 a | 0.36 a | 0.03 | 0.00 | 0.35 a | 0.36 a | 0.33 b | 0.01 | -0.02 | |
丙氨酸Ala | 0.44 a | 0.47 a | 0.44 a | 0.03 | 0.00 | 0.44 a | 0.44 a | 0.41 b | 0.00 | -0.03 | |
半胱氨酸Cys | 0.10 a | 0.10 a | 0.09 a | 0.00 | -0.01 | 0.08 a | 0.09 a | 0.09 a | 0.01 | 0.01 | |
缬氨酸Val | 0.40 a | 0.45 a | 0.40 a | 0.05 | 0.00 | 0.39 a | 0.40 a | 0.38 a | 0.01 | -0.01 | |
蛋氨酸Met | 0.22 a | 0.18 a | 0.16 a | -0.04 | -0.06 | 0.18 a | 0.22 a | 0.19 a | 0.04 | 0.01 | |
异亮氨酸Ile | 0.30 a | 0.32 a | 0.28 a | 0.02 | -0.02 | 0.27 a | 0.29 a | 0.28 a | 0.02 | 0.01 | |
亮氨酸Leu | 0.64 a | 0.69 a | 0.62 a | 0.05 | -0.02 | 0.60 a | 0.62 a | 0.59 a | 0.02 | -0.03 | |
酪氨酸Tyr | 0.36 a | 0.41 a | 0.35 a | 0.05 | -0.01 | 0.35 a | 0.35 a | 0.34 a | 0.00 | -0.01 | |
苯丙氨酸Phe | 0.50 a | 0.54 a | 0.50 a | 0.04 | 0.00 | 0.49 a | 0.47 a | 0.46 a | -0.02 | -0.03 | |
赖氨酸Lys | 0.50 a | 0.46 a | 0.45 a | -0.04 | -0.05 | 0.50 a | 0.45 b | 0.47 ab | -0.05 | -0.03 | |
组氨酸His | 0.39 a | 0.29 a | 0.30 a | -0.10 | -0.09 | 0.39 a | 0.29 a | 0.36 a | -0.10 | -0.03 | |
精氨酸Arg | 0.69 a | 0.68 a | 0.65 a | -0.01 | -0.04 | 0.72 a | 0.62 b | 0.64 b | -0.10 | -0.08 | |
脯氨酸Pro | 0.32 a | 0.34 a | 0.31 a | 0.02 | -0.01 | 0.30 a | 0.31 a | 0.28 b | 0.01 | -0.02 | |
总含量Total | 8.15 a | 8.61 a | 7.94 a | 0.46 | -0.21 | 7.93 a | 7.80 a | 7.56 a | -0.13 | -0.37 |
表7 不同氮肥处理下籽粒中的氨基酸含量
Table 7 Amino acid contents in brown rice under different N treatments %
氨基酸 Amino acid | WBRK | WCRK | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
对照CK | N5-5 | N10-0 | ±N5-5 | ±N10-0 | 对照CK | N5-5 | N10-0 | ±N5-5 | ±N10-0 | ||
天冬氨酸Asp | 0.64 a | 0.69 a | 0.64 a | 0.05 | 0.00 | 0.62 a | 0.63 a | 0.59 b | 0.01 | -0.03 | |
苏氨酸Thr | 0.33 a | 0.36 a | 0.33 a | 0.03 | 0.00 | 0.32 a | 0.32 a | 0.31 b | 0.00 | -0.01 | |
丝氨酸Ser | 0.44 a | 0.49 a | 0.46 a | 0.05 | 0.02 | 0.43 a | 0.43 a | 0.41 a | 0.00 | -0.02 | |
谷氨酸Glu | 1.54 a | 1.71 a | 1.58 a | 0.17 | 0.04 | 1.50 a | 1.52 a | 1.45 b | 0.02 | -0.05 | |
甘氨酸Gly | 0.36 a | 0.39 a | 0.36 a | 0.03 | 0.00 | 0.35 a | 0.36 a | 0.33 b | 0.01 | -0.02 | |
丙氨酸Ala | 0.44 a | 0.47 a | 0.44 a | 0.03 | 0.00 | 0.44 a | 0.44 a | 0.41 b | 0.00 | -0.03 | |
半胱氨酸Cys | 0.10 a | 0.10 a | 0.09 a | 0.00 | -0.01 | 0.08 a | 0.09 a | 0.09 a | 0.01 | 0.01 | |
缬氨酸Val | 0.40 a | 0.45 a | 0.40 a | 0.05 | 0.00 | 0.39 a | 0.40 a | 0.38 a | 0.01 | -0.01 | |
蛋氨酸Met | 0.22 a | 0.18 a | 0.16 a | -0.04 | -0.06 | 0.18 a | 0.22 a | 0.19 a | 0.04 | 0.01 | |
异亮氨酸Ile | 0.30 a | 0.32 a | 0.28 a | 0.02 | -0.02 | 0.27 a | 0.29 a | 0.28 a | 0.02 | 0.01 | |
亮氨酸Leu | 0.64 a | 0.69 a | 0.62 a | 0.05 | -0.02 | 0.60 a | 0.62 a | 0.59 a | 0.02 | -0.03 | |
酪氨酸Tyr | 0.36 a | 0.41 a | 0.35 a | 0.05 | -0.01 | 0.35 a | 0.35 a | 0.34 a | 0.00 | -0.01 | |
苯丙氨酸Phe | 0.50 a | 0.54 a | 0.50 a | 0.04 | 0.00 | 0.49 a | 0.47 a | 0.46 a | -0.02 | -0.03 | |
赖氨酸Lys | 0.50 a | 0.46 a | 0.45 a | -0.04 | -0.05 | 0.50 a | 0.45 b | 0.47 ab | -0.05 | -0.03 | |
组氨酸His | 0.39 a | 0.29 a | 0.30 a | -0.10 | -0.09 | 0.39 a | 0.29 a | 0.36 a | -0.10 | -0.03 | |
精氨酸Arg | 0.69 a | 0.68 a | 0.65 a | -0.01 | -0.04 | 0.72 a | 0.62 b | 0.64 b | -0.10 | -0.08 | |
脯氨酸Pro | 0.32 a | 0.34 a | 0.31 a | 0.02 | -0.01 | 0.30 a | 0.31 a | 0.28 b | 0.01 | -0.02 | |
总含量Total | 8.15 a | 8.61 a | 7.94 a | 0.46 | -0.21 | 7.93 a | 7.80 a | 7.56 a | -0.13 | -0.37 |
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