Chinese Journal OF Rice Science ›› 2018, Vol. 32 ›› Issue (3): 247-256.DOI: 10.16819/j.1001-7216.2018.7103
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Yuxiang LI1,2, Zhizhou HE1, Yanfeng DING1, Shaohua WANG1, Zhenghui LIU1, She TANG1, Chengqiang DING1, Lin CHEN1, Ganghua LI1,*()
Received:
2017-08-29
Revised:
2017-11-22
Online:
2018-05-10
Published:
2018-05-10
Contact:
Ganghua LI
李玉祥1,2, 何知舟1, 丁艳锋1, 王绍华1, 刘正辉1, 唐设1, 丁承强1, 陈琳1, 李刚华1,*()
通讯作者:
李刚华
基金资助:
CLC Number:
Yuxiang LI, Zhizhou HE, Yanfeng DING, Shaohua WANG, Zhenghui LIU, She TANG, Chengqiang DING, Lin CHEN, Ganghua LI. Effects of Sowing Densities on Quality and YieldFormation of Hydroponically Grown Long-mat Rice Seedlings Under Mechanical Transplanting[J]. Chinese Journal OF Rice Science, 2018, 32(3): 247-256.
李玉祥, 何知舟, 丁艳锋, 王绍华, 刘正辉, 唐设, 丁承强, 陈琳, 李刚华. 播种量对机插水卷苗秧苗素质及产量形成的影响[J]. 中国水稻科学, 2018, 32(3): 247-256.
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URL: http://www.ricesci.cn/EN/10.16819/j.1001-7216.2018.7103
品种 Cultivar | 播种量(常规秧盘) Sowing density/(g·nursery-1) (0.58 m×0.28 m×0.03 m) | 播种量(水卷苗苗床) Sowing density/(g·nursery-1) (4 m×0.28 m×0.05 m) | 播种量 Sowing density /(g·m-2) | 单位面积种子数 Number of seeds per cm2 |
---|---|---|---|---|
武运粳24号 Wuyunjing 24 | 90 | 620.7 | 554.2 | 1.52 |
120 | 827.6 | 738.9 | 2.03 | |
150 | 1034.5 | 923.6 | 2.54 | |
180 | 1241.4 | 1108.4 | 3.05 | |
6两优9368 6 liangyou 9368 | 50 | 344.8 | 307.9 | 0.82 |
70 | 482.8 | 431.0 | 1.14 | |
90 | 620.7 | 554.2 | 1.47 | |
110 | 758.6 | 677.3 | 1.80 |
Table 1 Design of experimental treatments (sowing density).
品种 Cultivar | 播种量(常规秧盘) Sowing density/(g·nursery-1) (0.58 m×0.28 m×0.03 m) | 播种量(水卷苗苗床) Sowing density/(g·nursery-1) (4 m×0.28 m×0.05 m) | 播种量 Sowing density /(g·m-2) | 单位面积种子数 Number of seeds per cm2 |
---|---|---|---|---|
武运粳24号 Wuyunjing 24 | 90 | 620.7 | 554.2 | 1.52 |
120 | 827.6 | 738.9 | 2.03 | |
150 | 1034.5 | 923.6 | 2.54 | |
180 | 1241.4 | 1108.4 | 3.05 | |
6两优9368 6 liangyou 9368 | 50 | 344.8 | 307.9 | 0.82 |
70 | 482.8 | 431.0 | 1.14 | |
90 | 620.7 | 554.2 | 1.47 | |
110 | 758.6 | 677.3 | 1.80 |
Fig. 1. Seedling emergence rate and seedling numberper cm2 of two cultivars under different sowing densities before transplanting for hydroponically grown long-mat rice seedlings(HLMS).
Fig. 2. Leaf area index and specific leaf weight of two rice cultivars under different sowing densities before transplanted for hydroponically grown long-mat rice seedlings(HLMS). Different letters above the bars are significantly different at P<0.05 (n =3, LSD). The same as below.
Fig. 3. Relationship among seedlings per square centimetre and leaf area index and specific leaf weight of both cultivars before transplanting for hydroponically grown long-mat rice seedlings(HLMS).
播种量 Sowing density /(g·nursery-1) | 叶龄 NAL | 株高 SH/cm | 根数 NR | 根长 LR/cm | 地上部干质量 DWS/g | 根质量 DWR/g | 质量高度比 DW/H/(mg·cm-1) | 根冠比 R/S | 苗基宽 SD/mm | 根系活性 RA/(ug-1·g-1) | 发根力 RDA |
---|---|---|---|---|---|---|---|---|---|---|---|
武运粳24号Wuyunjing 24 | |||||||||||
90 | 3.9±0.2 a | 10.8±0.2 a | 10.7±0.6 a | 8.2±1.4 a | 4.51±0.49 a | 2.29±0.10 a | 4.16±0.36 a | 0.51±0.08 a | 2.9±0.131 a | 105.1±7.0 a | 8.4±0.7 a |
120 | 3.8±0.1 a | 10.0±0.9 a | 10.1±1.5 a | 7.3±0.8 a | 4.34±0.37 a | 2.22±0.05 a | 4.32±0.69 a | 0.51±0.03 a | 2.6±0.06 b | 98.6±9.1 ab | 7.6±0.2 a |
150 | 3.9±0.6 a | 11.2±0.3 a | 10.3±2.1 a | 8.6±0.6 a | 3.14±0.71 b | 2.00±0.14 ab | 2.81±0.62 b | 0.66±0.14 a | 2.6±0.09 b | 93.3±6.3 ab | 6.3±0.4 b |
180 | 3.9±0.1 a | 10.8±0.2 a | 10.8±1.2 a | 8.8±0.5 a | 2.38±0.55 c | 1.50±0.11 c | 2.21±0.54 c | 0.65±0.16 a | 2.7±0.14 b | 79.4±6.5 b | 4.5±0.1 c |
6两优9368 6 liangyou 9368 | |||||||||||
50 | 2.9±0.2 a | 10.3±0.4 c | 6.8±0.9 a | 9.7±2.7 a | 4.40±0.53 a | 2.47±0.30 a | 4.26±0.41 a | 0.57±0.14 a | 2.9±0.12 a | 34.2±1.8 a | 7.9±0.7 a |
70 | 3.0±0.2 a | 12.0±0.8 ab | 6.5±0.2 a | 9.4±0.9 a | 3.95±0.27 ab | 2.29±0.10 a | 3.31±0.37 b | 0.58±0.04 a | 2.8±0.10 a | 35.7±2.0 a | 7.2±1.0 a |
90 | 2.9±0.1 a | 10.3±0.5 c | 7.2±0.8 a | 7.9±0.7 a | 3.47±0.15 c | 2.06±0.17 ab | 3.35±0.06 b | 0.59±0.07 a | 2.5±0.11 b | 33.9±1.7 a | 6.7±0.6 ab |
110 | 3.1±0.2 a | 11.2±0.9 a | 6.8±0.7 a | 9.3±1.2 a | 2.82±0.17 d | 1.85±0.28 c | 2.52±0.25 c | 0.65±0.07 a | 2.5±0.11 b | 29.4±0.5 b | 5.1±1.2 b |
Table 2 Seedling biomass accumulation of two cultivars under different sowing densities before transplanting for hydroponically grown long-mat rice seedlings(HLMS).
播种量 Sowing density /(g·nursery-1) | 叶龄 NAL | 株高 SH/cm | 根数 NR | 根长 LR/cm | 地上部干质量 DWS/g | 根质量 DWR/g | 质量高度比 DW/H/(mg·cm-1) | 根冠比 R/S | 苗基宽 SD/mm | 根系活性 RA/(ug-1·g-1) | 发根力 RDA |
---|---|---|---|---|---|---|---|---|---|---|---|
武运粳24号Wuyunjing 24 | |||||||||||
90 | 3.9±0.2 a | 10.8±0.2 a | 10.7±0.6 a | 8.2±1.4 a | 4.51±0.49 a | 2.29±0.10 a | 4.16±0.36 a | 0.51±0.08 a | 2.9±0.131 a | 105.1±7.0 a | 8.4±0.7 a |
120 | 3.8±0.1 a | 10.0±0.9 a | 10.1±1.5 a | 7.3±0.8 a | 4.34±0.37 a | 2.22±0.05 a | 4.32±0.69 a | 0.51±0.03 a | 2.6±0.06 b | 98.6±9.1 ab | 7.6±0.2 a |
150 | 3.9±0.6 a | 11.2±0.3 a | 10.3±2.1 a | 8.6±0.6 a | 3.14±0.71 b | 2.00±0.14 ab | 2.81±0.62 b | 0.66±0.14 a | 2.6±0.09 b | 93.3±6.3 ab | 6.3±0.4 b |
180 | 3.9±0.1 a | 10.8±0.2 a | 10.8±1.2 a | 8.8±0.5 a | 2.38±0.55 c | 1.50±0.11 c | 2.21±0.54 c | 0.65±0.16 a | 2.7±0.14 b | 79.4±6.5 b | 4.5±0.1 c |
6两优9368 6 liangyou 9368 | |||||||||||
50 | 2.9±0.2 a | 10.3±0.4 c | 6.8±0.9 a | 9.7±2.7 a | 4.40±0.53 a | 2.47±0.30 a | 4.26±0.41 a | 0.57±0.14 a | 2.9±0.12 a | 34.2±1.8 a | 7.9±0.7 a |
70 | 3.0±0.2 a | 12.0±0.8 ab | 6.5±0.2 a | 9.4±0.9 a | 3.95±0.27 ab | 2.29±0.10 a | 3.31±0.37 b | 0.58±0.04 a | 2.8±0.10 a | 35.7±2.0 a | 7.2±1.0 a |
90 | 2.9±0.1 a | 10.3±0.5 c | 7.2±0.8 a | 7.9±0.7 a | 3.47±0.15 c | 2.06±0.17 ab | 3.35±0.06 b | 0.59±0.07 a | 2.5±0.11 b | 33.9±1.7 a | 6.7±0.6 ab |
110 | 3.1±0.2 a | 11.2±0.9 a | 6.8±0.7 a | 9.3±1.2 a | 2.82±0.17 d | 1.85±0.28 c | 2.52±0.25 c | 0.65±0.07 a | 2.5±0.11 b | 29.4±0.5 b | 5.1±1.2 b |
Fig. 4. Photosynthetic rate (Pn) of two rice cultivars under different sowing densities before transplanted for hydroponically grown long-mat rice seedlings(HLMS).
播种量 Sowing density /(g·nursery-1) | 空穴率 Missing hill rate/% | 漂秧率 Floating seedling rate/% | 伤秧率 Damaged seedling rate/% | 勾秧率 Folded seedling rate/% | 翻倒率 Overturned seedling rate/% | 每穴苗数 Seedlings per hill |
---|---|---|---|---|---|---|
武运粳24号Wuyunjing 24 | ||||||
90 | 12.1±8.3 a | 2.11±1.35 b | 0.44±0.51 a | 0.44±0.39 a | 0.89±0.38 a | 3.2±0.6 b |
120 | 8.6±1.5 b | 3.04±2.31 ab | 1.00±0.33 a | 0.44±0.77 a | 0.66±0.34 a | 3.5±0.7 b |
150 | 5.5±3.9 b | 6.44±0.39 a | 0.33±0.34 a | 0.77±0.50 a | 0.44±0.51 a | 4.1±0.3 b |
180 | 4.6±2.5 c | 4.89±1.68 a | 0.33±0.34 a | 1.22±0.51 a | 0.33±0.01 a | 5.5±0.8 a |
6两优9368 6 Liangyou 9368 | ||||||
50 | 18.8±4.7 a | 3.33±1.76 b | 0.44±1.96 a | 0.66±0.34 a | 0.33±0.34 a | 3.0±0.5 b |
70 | 11.9±2.7 b | 2.66±1.20 b | 0.66±0.34 a | 0.56±0.39 a | 0.44±0.20 a | 3.3±0.1 b |
90 | 8.5±1.3 bc | 4.18±2.14 ab | 0.89±0.38 a | 0.23±0.19 a | 0.22±0.19 a | 3.4±0.2 b |
110 | 5.1±3.7 d | 5.33±2.01 a | 1.55±0.96 a | 0.33±0.34 a | 0.11±0.19 a | 4.3±0.4 a |
Table 3 Mechanical transplanting quality in paddy field of two cultivars under different sowing densities for hydroponically grown long-mat rice seedlings(HLMS).
播种量 Sowing density /(g·nursery-1) | 空穴率 Missing hill rate/% | 漂秧率 Floating seedling rate/% | 伤秧率 Damaged seedling rate/% | 勾秧率 Folded seedling rate/% | 翻倒率 Overturned seedling rate/% | 每穴苗数 Seedlings per hill |
---|---|---|---|---|---|---|
武运粳24号Wuyunjing 24 | ||||||
90 | 12.1±8.3 a | 2.11±1.35 b | 0.44±0.51 a | 0.44±0.39 a | 0.89±0.38 a | 3.2±0.6 b |
120 | 8.6±1.5 b | 3.04±2.31 ab | 1.00±0.33 a | 0.44±0.77 a | 0.66±0.34 a | 3.5±0.7 b |
150 | 5.5±3.9 b | 6.44±0.39 a | 0.33±0.34 a | 0.77±0.50 a | 0.44±0.51 a | 4.1±0.3 b |
180 | 4.6±2.5 c | 4.89±1.68 a | 0.33±0.34 a | 1.22±0.51 a | 0.33±0.01 a | 5.5±0.8 a |
6两优9368 6 Liangyou 9368 | ||||||
50 | 18.8±4.7 a | 3.33±1.76 b | 0.44±1.96 a | 0.66±0.34 a | 0.33±0.34 a | 3.0±0.5 b |
70 | 11.9±2.7 b | 2.66±1.20 b | 0.66±0.34 a | 0.56±0.39 a | 0.44±0.20 a | 3.3±0.1 b |
90 | 8.5±1.3 bc | 4.18±2.14 ab | 0.89±0.38 a | 0.23±0.19 a | 0.22±0.19 a | 3.4±0.2 b |
110 | 5.1±3.7 d | 5.33±2.01 a | 1.55±0.96 a | 0.33±0.34 a | 0.11±0.19 a | 4.3±0.4 a |
Fig. 5. Regression analysis of sowing density on missing hill rate and basic seedlings of two cultivars for hydroponically grown long-mat rice seedlings(HLMS).
Fig. 6. Tiller dynamics of population (A, B) and tiller number per plant (C, D) of two cultivars under different sowing densities in paddy field for hydroponically grown long-mat rice seedlings(HLMS).
Fig. 7. Tillering rate per plant of two cultivars under different sowing densities from sowing to max-tilleringfor hydroponically grown long-mat rice seedlings(HLMS).
Fig. 8. Biomass accumulation of two cultivars at different growth stages under different sowing densities for hydroponically grown long-mat rice seedlings(HLMS). TS, Transplanting stage; PI, Panicle initiation stage; HS, Heading stage; MS, Maturity stage.
播种量 Sowing density /(g·nursery-1) | 穗数 Effective panicles /(×104·hm-2) | 每穗粒数 Spikelet number per panicle | 颖花量 Spikelets per square meter/(×103m-2) | 结实率 Seed setting rate/% | 千粒重 1000-grain weight/g | 产量 Yield /(t·hm-2) |
---|---|---|---|---|---|---|
武运粳24号Wuyunjing 24 | ||||||
90 | 201.6±13.5 c | 150.8±13.1 a | 31.4±1.5 b | 92.7±0.7 a | 27.27±0.05 a | 7.96±0.33 b |
120 | 248.7±10.4 ab | 152.1±10.8 a | 37.8±2.8 a | 93.2±1.3 a | 27.83±0.20 a | 9.82±0.63 a |
150 | 241.2±7.6 b | 151.2±5.5 a | 36.4±1.6 a | 92.2±2.4 a | 27.31±0.39 a | 9.20±0.33 ab |
180 | 258.3±7.9 a | 145.9±9.7 a | 36.8±3.3 a | 91.7±3.1 a | 27.06±0.96 a | 9.36±1.08 a |
6两优9368 6 liangyou 9368 | ||||||
50 | 192.2±6.6 b | 207.5±13.5 a | 39.9±2.0 b | 85.9±1.4 b | 28.17±1.09 a | 10.04±0.90 b |
70 | 249.3±5.6 a | 196.8±25.2 ab | 49.1±5.6 a | 87.5±1.7 ab | 28.32±0.35 a | 11.93±1.19 a |
90 | 260.9±3.3 a | 190.7±15.5 b | 49.7±3.9 a | 88.6±1.0 ab | 28.74±0.81 a | 12.67±0.79 a |
110 | 271.3±20.1 a | 184.9±3.6 b | 50.1±4.0 a | 89.6±2.5 a | 28.31±0.27 a | 12.71±1.13 a |
Table 4 Grain yield and its components under different sowing densities for hydroponically grown long-mat rice seedlings(HLMS).
播种量 Sowing density /(g·nursery-1) | 穗数 Effective panicles /(×104·hm-2) | 每穗粒数 Spikelet number per panicle | 颖花量 Spikelets per square meter/(×103m-2) | 结实率 Seed setting rate/% | 千粒重 1000-grain weight/g | 产量 Yield /(t·hm-2) |
---|---|---|---|---|---|---|
武运粳24号Wuyunjing 24 | ||||||
90 | 201.6±13.5 c | 150.8±13.1 a | 31.4±1.5 b | 92.7±0.7 a | 27.27±0.05 a | 7.96±0.33 b |
120 | 248.7±10.4 ab | 152.1±10.8 a | 37.8±2.8 a | 93.2±1.3 a | 27.83±0.20 a | 9.82±0.63 a |
150 | 241.2±7.6 b | 151.2±5.5 a | 36.4±1.6 a | 92.2±2.4 a | 27.31±0.39 a | 9.20±0.33 ab |
180 | 258.3±7.9 a | 145.9±9.7 a | 36.8±3.3 a | 91.7±3.1 a | 27.06±0.96 a | 9.36±1.08 a |
6两优9368 6 liangyou 9368 | ||||||
50 | 192.2±6.6 b | 207.5±13.5 a | 39.9±2.0 b | 85.9±1.4 b | 28.17±1.09 a | 10.04±0.90 b |
70 | 249.3±5.6 a | 196.8±25.2 ab | 49.1±5.6 a | 87.5±1.7 ab | 28.32±0.35 a | 11.93±1.19 a |
90 | 260.9±3.3 a | 190.7±15.5 b | 49.7±3.9 a | 88.6±1.0 ab | 28.74±0.81 a | 12.67±0.79 a |
110 | 271.3±20.1 a | 184.9±3.6 b | 50.1±4.0 a | 89.6±2.5 a | 28.31±0.27 a | 12.71±1.13 a |
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