中国水稻科学 ›› 2021, Vol. 35 ›› Issue (1): 47-58.DOI: 10.16819/j.1001-7216.2021.9139
仇景涛1, 任晓佳1, 蒋天昊1, 顾雪怡1,2, 张祖建1,*()
收稿日期:
2019-12-16
修回日期:
2020-03-27
出版日期:
2021-01-10
发布日期:
2021-01-10
通讯作者:
张祖建
基金资助:
Jingtao QIU1, Xiaojia REN1, Tianhao JIANG1, GUXueyi1,2, Zujian ZHANG1,*()
Received:
2019-12-16
Revised:
2020-03-27
Online:
2021-01-10
Published:
2021-01-10
Contact:
Zujian ZHANG
摘要: 目的 探究水稻机械化移栽应用中长期存在的晚播晚栽机插稻的特殊应用价值,方法 在苏南设置大田试验,分析了晚播晚栽机插水稻的产量表现及其群体生产特征,并设置密度和穗肥施用处理,解析栽培措施对晚播晚栽机插水稻群体发育和产量形成的影响。结果 机插水稻晚播晚栽产量出现一定程度的下降,主要原因是单位面积穗数和每穗粒数降低。晚播晚栽机插稻群体高峰苗出现时间相对前移,茎蘖成穗率则明显下降。同化物质积累和运转均受到一定影响,抽穗期茎鞘中非结构性碳水化合物积累下降,茎鞘物质输出率和转换率也呈下降趋势。可见,晚播晚栽机插水稻存在物质生产和产量形成的必然劣势。增加栽植密度,单位面积穗数显著增加,干物质积累量上升,产量明显提高。在同一密度条件下,随着穗肥施氮量水平的提高,产量表现为先上升后下降的趋势,过多穗肥施用不利于晚播晚栽机插稻结实期的物质积累。较高密度配合适宜水平的穗肥施用,可提
仇景涛, 任晓佳, 蒋天昊, 顾雪怡, 张祖建. 晚播晚栽机插水稻群体生长特征及其调控策略[J]. 中国水稻科学, 2021, 35(1): 47-58.
Jingtao QIU, Xiaojia REN, Tianhao JIANG, GUXueyi, Zujian ZHANG. PopulationGrowthCharacteristics and Cultivation Strategies of Mechanically Transplanted Rice in Late Seeding and Planting Conditions[J]. Chinese Journal OF Rice Science, 2021, 35(1): 47-58.
年份 Year | 播期处理 Seeding treatment | 穗数 Panicle number /(×104·hm-2) | 每穗粒数 Grain number per panicle | 结实率 Filled-grain percentage/% | 千粒重 1000-grain weight/g | 产量 Yield/(t·hm-2) |
---|---|---|---|---|---|---|
2016 | NS | 326.88 a | 139.4 a | 90.0 a | 25.73 a | 8.96 a |
LS | 320.60 b | 137.4 b | 89.7 a | 25.60 a | 8.60 b | |
2017 | S1 | 368.96 a | 137.0 a | 90.8 a | 26.19 a | 10.21 a |
S2 | 366.46 b | 135.7 a | 90.7 a | 26.15 a | 10.03 b | |
S3 | 365.96 c | 131.9 b | 90.7 a | 26.14 a | 9.73 c |
表1 播期对机插水稻产量及其构成因素的影响
Table1 Effect of seeding date on yield and its components of mechanically transplanted rice.
年份 Year | 播期处理 Seeding treatment | 穗数 Panicle number /(×104·hm-2) | 每穗粒数 Grain number per panicle | 结实率 Filled-grain percentage/% | 千粒重 1000-grain weight/g | 产量 Yield/(t·hm-2) |
---|---|---|---|---|---|---|
2016 | NS | 326.88 a | 139.4 a | 90.0 a | 25.73 a | 8.96 a |
LS | 320.60 b | 137.4 b | 89.7 a | 25.60 a | 8.60 b | |
2017 | S1 | 368.96 a | 137.0 a | 90.8 a | 26.19 a | 10.21 a |
S2 | 366.46 b | 135.7 a | 90.7 a | 26.15 a | 10.03 b | |
S3 | 365.96 c | 131.9 b | 90.7 a | 26.14 a | 9.73 c |
年份 Year | 密度 Density | 穗肥 Panicle promoting fertilizer | 每1hm2穗数 Panicle number /(×104·hm-2) | 每穗粒数 Grain number per panicle | 结实率 Filled-grain percentage/% | 千粒重 1000-grain weight/g | 产量 Yield /(t·hm-2) |
---|---|---|---|---|---|---|---|
2016 | LD | P0 | 247.88 c | 112.4 b | 88.8 c | 25.38 b | 5.34 b |
P1 | 252.16 b | 136.2 a | 89.2 b | 25.84 a | 6.72 c | ||
P2 | 260.76 a | 139.5 a | 89.3 a | 26.08 a | 7.20 a | ||
P3 | 262.22 a | 139.1 a | 88.1 d | 25.86 a | 7.06 a | ||
MD | P0 | 301.41 c | 111.0 c | 88.2 c | 25.32 c | 6.35 d | |
P1 | 311.75 b | 128.8 b | 89.8 a | 25.43 bc | 7.79 c | ||
P2 | 320.60 a | 137.4 a | 89.7 a | 25.60 ab | 8.60 a | ||
P3 | 321.26 a | 135.3 a | 88.7 b | 25.68 a | 8.42 b | ||
HD | P0 | 352.45 b | 111.2 d | 87.9 a | 25.06 d | 7.34 d | |
P1 | 365.71 a | 129.8 a | 87.9 a | 26.25 a | 9.32 a | ||
P2 | 364.61 a | 126.0 b | 86.8 b | 25.86 b | 8.76 b | ||
P3 | 364.33 a | 122.7 c | 85.7 c | 25.66 c | 8.36 c | ||
2017 | LD | P0 | 294.05 ab | 127.5 bc | 89.7 b | 26.05 b | 7.44 b |
P1 | 298.82 a | 128.1 b | 90.3 ab | 26.35 a | 7.74 ab | ||
P2 | 303.58 a | 132.8 a | 91.4 a | 26.57 a | 8.33 a | ||
P3 | 289.29 ab | 125.6 c | 89.0 b | 26.04 b | 7.16 b | ||
MD | P0 | 344.87 ab | 125.2 c | 88.9 c | 26.06 a | 8.50 c | |
P1 | 362.10 ab | 128.1 b | 89.8 b | 26.10 a | 9.24 ab | ||
P2 | 365.96 a | 131.9 a | 90.7 a | 26.14 a | 9.73 a | ||
P3 | 360.58 ab | 122.6 c | 88.5 c | 25.88 a | 8.60 bc | ||
HD | P0 | 425.77 ab | 114.1 ab | 87.9 b | 25.90 b | 9.40 b | |
P1 | 433.77 ab | 117.4 a | 88.6 a | 26.01 a | 9.98 a | ||
P2 | 438.43 a | 117.4 a | 87.7 b | 26.07 a | 10.00 a | ||
P3 | 433.44 ab | 112.2 b | 87.1 c | 25.70 c | 9.25 b |
表2 密肥处理对晚播晚栽机插水稻产量及构成因素的影响
Table 2 Effects of planting density and nitrogen level on yield and its components of mechanically transplanted rice in late seeding and late planting conditions.
年份 Year | 密度 Density | 穗肥 Panicle promoting fertilizer | 每1hm2穗数 Panicle number /(×104·hm-2) | 每穗粒数 Grain number per panicle | 结实率 Filled-grain percentage/% | 千粒重 1000-grain weight/g | 产量 Yield /(t·hm-2) |
---|---|---|---|---|---|---|---|
2016 | LD | P0 | 247.88 c | 112.4 b | 88.8 c | 25.38 b | 5.34 b |
P1 | 252.16 b | 136.2 a | 89.2 b | 25.84 a | 6.72 c | ||
P2 | 260.76 a | 139.5 a | 89.3 a | 26.08 a | 7.20 a | ||
P3 | 262.22 a | 139.1 a | 88.1 d | 25.86 a | 7.06 a | ||
MD | P0 | 301.41 c | 111.0 c | 88.2 c | 25.32 c | 6.35 d | |
P1 | 311.75 b | 128.8 b | 89.8 a | 25.43 bc | 7.79 c | ||
P2 | 320.60 a | 137.4 a | 89.7 a | 25.60 ab | 8.60 a | ||
P3 | 321.26 a | 135.3 a | 88.7 b | 25.68 a | 8.42 b | ||
HD | P0 | 352.45 b | 111.2 d | 87.9 a | 25.06 d | 7.34 d | |
P1 | 365.71 a | 129.8 a | 87.9 a | 26.25 a | 9.32 a | ||
P2 | 364.61 a | 126.0 b | 86.8 b | 25.86 b | 8.76 b | ||
P3 | 364.33 a | 122.7 c | 85.7 c | 25.66 c | 8.36 c | ||
2017 | LD | P0 | 294.05 ab | 127.5 bc | 89.7 b | 26.05 b | 7.44 b |
P1 | 298.82 a | 128.1 b | 90.3 ab | 26.35 a | 7.74 ab | ||
P2 | 303.58 a | 132.8 a | 91.4 a | 26.57 a | 8.33 a | ||
P3 | 289.29 ab | 125.6 c | 89.0 b | 26.04 b | 7.16 b | ||
MD | P0 | 344.87 ab | 125.2 c | 88.9 c | 26.06 a | 8.50 c | |
P1 | 362.10 ab | 128.1 b | 89.8 b | 26.10 a | 9.24 ab | ||
P2 | 365.96 a | 131.9 a | 90.7 a | 26.14 a | 9.73 a | ||
P3 | 360.58 ab | 122.6 c | 88.5 c | 25.88 a | 8.60 bc | ||
HD | P0 | 425.77 ab | 114.1 ab | 87.9 b | 25.90 b | 9.40 b | |
P1 | 433.77 ab | 117.4 a | 88.6 a | 26.01 a | 9.98 a | ||
P2 | 438.43 a | 117.4 a | 87.7 b | 26.07 a | 10.00 a | ||
P3 | 433.44 ab | 112.2 b | 87.1 c | 25.70 c | 9.25 b |
密度 Density | 穗肥Panicle promoting fertilizer | |||
---|---|---|---|---|
P0 | P1 | P2 | P3 | |
LD | 69.55 a | 70.98 a | 71.31 a | 70.89 a |
MD | 69.12 a | 70.78 a | 71.01 a | 70.63 a |
HD | 67.74 b | 68.83 b | 68.84 b | 68.06 b |
Table 3 Effects of planting density and nitrogen level on productive tiller percentage of mechanically transplanted rice in late seeding and late planting conditions (2017). %
密度 Density | 穗肥Panicle promoting fertilizer | |||
---|---|---|---|---|
P0 | P1 | P2 | P3 | |
LD | 69.55 a | 70.98 a | 71.31 a | 70.89 a |
MD | 69.12 a | 70.78 a | 71.01 a | 70.63 a |
HD | 67.74 b | 68.83 b | 68.84 b | 68.06 b |
图3 播期和穗肥处理对机插水稻剑叶SPAD值的影响(2017)
Fig.3. Effect of seeding and panicle-promoting fertilizer level on SPAD value of flag leaf of mechanically transplanted rice (2017).
播期处理 Seeding treatment | 总LAI Total LAI | 高效LAI Efficient LAI | 有效LAI Effective LAI | 高效叶面积率 Efficient leaf area ratio/% | ||
---|---|---|---|---|---|---|
S1 | 7.55 a | 5.38 a | 7.21 a | 71.26 a | ||
S2 | 7.52 a | 5.35 a | 7.15 a | 71.14 a | ||
S3 | 7.50 a | 5.32 a | 7.10 a | 70.93 b |
表4 播期对抽穗期水稻叶面积指数的影响(2017)
Table 4 Effects of seeding date on rice leaf area index at the heading stage(2017).
播期处理 Seeding treatment | 总LAI Total LAI | 高效LAI Efficient LAI | 有效LAI Effective LAI | 高效叶面积率 Efficient leaf area ratio/% | ||
---|---|---|---|---|---|---|
S1 | 7.55 a | 5.38 a | 7.21 a | 71.26 a | ||
S2 | 7.52 a | 5.35 a | 7.15 a | 71.14 a | ||
S3 | 7.50 a | 5.32 a | 7.10 a | 70.93 b |
密度 Transplanting density | 穗肥 Panicle fertilizer level | 总LAI Total LAI | 高效LAI Efficient LAI | 有效LAI Effective LAI | 高效叶面积率 Efficient leaf area ratio/% |
---|---|---|---|---|---|
LD | P0 | 7.22 c | 4.95 ab | 6.65 b | 68.56 a |
P1 | 7.30 b | 5.01 a | 6.95 a | 68.63 a | |
P2 | 7.40 a | 5.10 a | 6.92 a | 68.91 a | |
P3 | 7.18 c | 4.72 b | 6.55 b | 65.74 a | |
MD | P0 | 7.33 c | 4.95 b | 6.68 d | 67.53 cd |
P1 | 7.42 b | 5.22 a | 6.80 b | 70.35 ab | |
P2 | 7.50 a | 5.32 a | 7.10 a | 70.93 a | |
P3 | 7.32 c | 5.02 b | 6.75 c | 68.57 bc | |
HD | P0 | 7.45 c | 5.23 ab | 6.85 b | 70.20 a |
P1 | 7.56 ab | 5.32 a | 7.02 a | 70.37 a | |
P2 | 7.60 a | 5.35 a | 7.06 a | 70.39 a | |
P3 | 7.51 bc | 5.02 b | 6.83 b | 66.84 b |
Table 5 Effects of planting density and nitrogen fertilizer level on rice leaf area index at the heading stage (2017).
密度 Transplanting density | 穗肥 Panicle fertilizer level | 总LAI Total LAI | 高效LAI Efficient LAI | 有效LAI Effective LAI | 高效叶面积率 Efficient leaf area ratio/% |
---|---|---|---|---|---|
LD | P0 | 7.22 c | 4.95 ab | 6.65 b | 68.56 a |
P1 | 7.30 b | 5.01 a | 6.95 a | 68.63 a | |
P2 | 7.40 a | 5.10 a | 6.92 a | 68.91 a | |
P3 | 7.18 c | 4.72 b | 6.55 b | 65.74 a | |
MD | P0 | 7.33 c | 4.95 b | 6.68 d | 67.53 cd |
P1 | 7.42 b | 5.22 a | 6.80 b | 70.35 ab | |
P2 | 7.50 a | 5.32 a | 7.10 a | 70.93 a | |
P3 | 7.32 c | 5.02 b | 6.75 c | 68.57 bc | |
HD | P0 | 7.45 c | 5.23 ab | 6.85 b | 70.20 a |
P1 | 7.56 ab | 5.32 a | 7.02 a | 70.37 a | |
P2 | 7.60 a | 5.35 a | 7.06 a | 70.39 a | |
P3 | 7.51 bc | 5.02 b | 6.83 b | 66.84 b |
年份 Year | 播期处理 Seeding treatment | 干物质积累Dry matter accumulation/(t·hm-2) | 茎鞘物质输出率 EPMSS/% | 茎鞘物质转换率 TPMSS/% | 经济系数 Economic coefficient | ||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | |||||
2016 | NS | 10.32 a | 17.88 a | 20.56 a | 22.21 a | 14.23 a | 0.474 a |
LS | 10.22 a | 17.65 a | 18.29 b | 21.88 a | 13.78 a | 0.470 a | |
2017 | S1 | 9.88 a | 15.63 a | 22.38 a | 19.99 a | 8.91 a | 0.456 a |
S2 | 9.65 a | 14.66 b | 22.23 a | 19.87 a | 8.87 a | 0.451 a | |
S3 | 9.28 b | 13.86 c | 21.33 b | 19.06 b | 8.82 a | 0.439 b |
表6 播期对晚播机插水稻地上部干物质积累与转运的影响
Table 6 Effects of seeding date on dry matter accumulation and translocation ofabove-ground part of mechanically transplanted rice in late seeding and late planting conditions.
年份 Year | 播期处理 Seeding treatment | 干物质积累Dry matter accumulation/(t·hm-2) | 茎鞘物质输出率 EPMSS/% | 茎鞘物质转换率 TPMSS/% | 经济系数 Economic coefficient | ||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | |||||
2016 | NS | 10.32 a | 17.88 a | 20.56 a | 22.21 a | 14.23 a | 0.474 a |
LS | 10.22 a | 17.65 a | 18.29 b | 21.88 a | 13.78 a | 0.470 a | |
2017 | S1 | 9.88 a | 15.63 a | 22.38 a | 19.99 a | 8.91 a | 0.456 a |
S2 | 9.65 a | 14.66 b | 22.23 a | 19.87 a | 8.87 a | 0.451 a | |
S3 | 9.28 b | 13.86 c | 21.33 b | 19.06 b | 8.82 a | 0.439 b |
密度 Planting density treatment | 穗肥 Panicle fertilizer level | 干物质积累Dry matter accumulation/(t·hm-2) | 茎鞘物质输出率 EPMSS/% | 茎鞘物质转换率 TPMSS/% | 经济系数 Economic coefficient | ||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | |||||
LD | CK | 6.54 d | 11.54 b | 15.81 c | 17.22 a | 7.60 a | 0.398 b |
P0 | 7.16 bc | 11.72 ab | 18.54 ab | 18.39 a | 8.88 a | 0.402 b | |
P1 | 7.55 ab | 12.05 ab | 18.93 a | 18.86 a | 8.95 a | 0.409 b | |
P2 | 7.72 a | 12.48 a | 18.88 a | 19.36 a | 9.09 a | 0.441 a | |
P3 | 6.90 cd | 11.60 b | 17.26 b | 16.60 a | 7.08 a | 0.415 b | |
MD | CK | 7.61 b | 11.84 c | 18.81 c | 16.78 a | 7.13 a | 0.405 a |
P0 | 7.78 b | 12.30 c | 20.12 bc | 17.47 a | 7.49 a | 0.422 a | |
P1 | 8.39 ab | 13.41 ab | 21.05 ab | 18.04 a | 7.94 a | 0.439 a | |
P2 | 9.28 a | 13.86 a | 22.19 a | 19.06 a | 8.82 a | 0.439 a | |
P3 | 7.55 b | 12.60 bc | 19.99 bc | 18.12 a | 7.39 a | 0.430 a | |
HD | CK | 9.22 cd | 13.23 d | 21.41 b | 17.48 bc | 8.68 b | 0.415 b |
P0 | 10.47 b | 15.22 c | 22.65 a | 18.82 ab | 10.56 a | 0.415 b | |
P1 | 10.97 a | 16.90 a | 22.72 a | 18.99 a | 10.99 a | 0.439 a | |
P2 | 9.45 c | 17.39 a | 22.37 ab | 15.77 bc | 8.76 b | 0.447 a | |
P3 | 8.75 d | 16.06 b | 21.94 ab | 14.40 c | 7.37 b | 0.422 b |
表7 密肥处理对晚播机插水稻地上部器官干物质积累与转运的影响(2017年)
Table7 Effects of planting density and nitrogen level on dry matter accumulation and translocation ofabove-ground part of mechanically transplanted rice in late seeding and late planting conditions.
密度 Planting density treatment | 穗肥 Panicle fertilizer level | 干物质积累Dry matter accumulation/(t·hm-2) | 茎鞘物质输出率 EPMSS/% | 茎鞘物质转换率 TPMSS/% | 经济系数 Economic coefficient | ||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | |||||
LD | CK | 6.54 d | 11.54 b | 15.81 c | 17.22 a | 7.60 a | 0.398 b |
P0 | 7.16 bc | 11.72 ab | 18.54 ab | 18.39 a | 8.88 a | 0.402 b | |
P1 | 7.55 ab | 12.05 ab | 18.93 a | 18.86 a | 8.95 a | 0.409 b | |
P2 | 7.72 a | 12.48 a | 18.88 a | 19.36 a | 9.09 a | 0.441 a | |
P3 | 6.90 cd | 11.60 b | 17.26 b | 16.60 a | 7.08 a | 0.415 b | |
MD | CK | 7.61 b | 11.84 c | 18.81 c | 16.78 a | 7.13 a | 0.405 a |
P0 | 7.78 b | 12.30 c | 20.12 bc | 17.47 a | 7.49 a | 0.422 a | |
P1 | 8.39 ab | 13.41 ab | 21.05 ab | 18.04 a | 7.94 a | 0.439 a | |
P2 | 9.28 a | 13.86 a | 22.19 a | 19.06 a | 8.82 a | 0.439 a | |
P3 | 7.55 b | 12.60 bc | 19.99 bc | 18.12 a | 7.39 a | 0.430 a | |
HD | CK | 9.22 cd | 13.23 d | 21.41 b | 17.48 bc | 8.68 b | 0.415 b |
P0 | 10.47 b | 15.22 c | 22.65 a | 18.82 ab | 10.56 a | 0.415 b | |
P1 | 10.97 a | 16.90 a | 22.72 a | 18.99 a | 10.99 a | 0.439 a | |
P2 | 9.45 c | 17.39 a | 22.37 ab | 15.77 bc | 8.76 b | 0.447 a | |
P3 | 8.75 d | 16.06 b | 21.94 ab | 14.40 c | 7.37 b | 0.422 b |
年份 Year | 播期处理 Seeding treatment | NSC浓度 Concentration of NSC/(mg·g-1) | NSC表观转运量 Apparent transferred mass of NSC/(kg·hm-2) | ||||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | 抽穗-抽穗后20d Heading-20d after heading | 抽穗-成熟 Heading-ripening | |||
2016 | NS | 158.33 a | 71.44 a | 101.93 a | 383.34 a | 403.55 a | |
LS | 136.90 b | 67.02 b | 84.69 b | 347.51 b | 392.56 b | ||
2017 | S1 | 144.81 a | 91.46 a | 97.02 a | 336.72 a | 377.78 a | |
S2 | 139.31 b | 85.44 b | 92.86 a | 333.16 a | 369.71 a | ||
S2 | 132.88 c | 71.79 c | 82.23 b | 311.91 b | 326.37 b |
Table 8 Effects of seeding date on accumulation and translocation of non-structualcarbohydrates(NSC) of mechanically transplanted rice.
年份 Year | 播期处理 Seeding treatment | NSC浓度 Concentration of NSC/(mg·g-1) | NSC表观转运量 Apparent transferred mass of NSC/(kg·hm-2) | ||||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | 抽穗-抽穗后20d Heading-20d after heading | 抽穗-成熟 Heading-ripening | |||
2016 | NS | 158.33 a | 71.44 a | 101.93 a | 383.34 a | 403.55 a | |
LS | 136.90 b | 67.02 b | 84.69 b | 347.51 b | 392.56 b | ||
2017 | S1 | 144.81 a | 91.46 a | 97.02 a | 336.72 a | 377.78 a | |
S2 | 139.31 b | 85.44 b | 92.86 a | 333.16 a | 369.71 a | ||
S2 | 132.88 c | 71.79 c | 82.23 b | 311.91 b | 326.37 b |
密度 Planting density | 穗肥 Panicle fertilizer level | NSC浓度 Concentration of NSC/(mg·g-1) | NSC表观转运量 Apparent transferred mass of NSC/(kg·hm-2) | ||||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | 抽穗-抽穗后20d Heading-20d after heading | 抽穗-成熟 Heading-ripening | |||
LD | CK | 161.27 a | 105.70 a | 108.70 a | 165.16 c | 263.17 cd | |
P0 | 153.39 a | 99.67 ab | 102.11 ab | 201.69 b | 280.42 bc | ||
P1 | 152.00 a | 96.00 b | 98.46 b | 214.99 b | 299.31 ab | ||
P2 | 135.00 b | 72.47 c | 76.01 c | 238.04 a | 309.98 a | ||
P3 | 108.74 c | 50.91 d | 56.24 d | 208.28 b | 236.48 d | ||
MD | CK | 160.38 a | 103.12 a | 113.74 a | 191.29 b | 257.01 a | |
P0 | 157.08 a | 100.14 a | 104.72 ab | 198.08 ab | 284.49 a | ||
P1 | 154.37 a | 89.73 b | 100.58 b | 222.15 ab | 295.54 a | ||
P2 | 132.88 b | 71.79 c | 82.23 c | 311.91 a | 326.37 a | ||
P3 | 114.91 c | 57.37 d | 63.27 d | 216.86 ab | 246.68 a | ||
HD | CK | 154.54 a | 121.95 a | 118.16 a | 222.73 b | 281.17 c | |
P0 | 144.40 ab | 108.35 a | 99.09 a | 281.52 ab | 365.95 a | ||
P1 | 142.23 ab | 82.28 b | 92.01 ab | 345.43 a | 393.78 a | ||
P2 | 122.07 bc | 68.59 bc | 69.41 b | 195.78 b | 320.71 b | ||
P3 | 107.96 c | 62.36 c | 67.52 b | 177.66 b | 237.61 d |
Table 9 Effects of density and nitrogen treatments on accumulation and translocation of non-structualcarbohydrates(NSC) of mechanically transplanted rice in late seeding and late planting conditions.
密度 Planting density | 穗肥 Panicle fertilizer level | NSC浓度 Concentration of NSC/(mg·g-1) | NSC表观转运量 Apparent transferred mass of NSC/(kg·hm-2) | ||||
---|---|---|---|---|---|---|---|
抽穗 Heading | 抽穗后20d 20d after heading | 成熟 Ripening | 抽穗-抽穗后20d Heading-20d after heading | 抽穗-成熟 Heading-ripening | |||
LD | CK | 161.27 a | 105.70 a | 108.70 a | 165.16 c | 263.17 cd | |
P0 | 153.39 a | 99.67 ab | 102.11 ab | 201.69 b | 280.42 bc | ||
P1 | 152.00 a | 96.00 b | 98.46 b | 214.99 b | 299.31 ab | ||
P2 | 135.00 b | 72.47 c | 76.01 c | 238.04 a | 309.98 a | ||
P3 | 108.74 c | 50.91 d | 56.24 d | 208.28 b | 236.48 d | ||
MD | CK | 160.38 a | 103.12 a | 113.74 a | 191.29 b | 257.01 a | |
P0 | 157.08 a | 100.14 a | 104.72 ab | 198.08 ab | 284.49 a | ||
P1 | 154.37 a | 89.73 b | 100.58 b | 222.15 ab | 295.54 a | ||
P2 | 132.88 b | 71.79 c | 82.23 c | 311.91 a | 326.37 a | ||
P3 | 114.91 c | 57.37 d | 63.27 d | 216.86 ab | 246.68 a | ||
HD | CK | 154.54 a | 121.95 a | 118.16 a | 222.73 b | 281.17 c | |
P0 | 144.40 ab | 108.35 a | 99.09 a | 281.52 ab | 365.95 a | ||
P1 | 142.23 ab | 82.28 b | 92.01 ab | 345.43 a | 393.78 a | ||
P2 | 122.07 bc | 68.59 bc | 69.41 b | 195.78 b | 320.71 b | ||
P3 | 107.96 c | 62.36 c | 67.52 b | 177.66 b | 237.61 d |
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