中国水稻科学 ›› 2018, Vol. 32 ›› Issue (3): 247-256.DOI: 10.16819/j.1001-7216.2018.7103
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,*()
收稿日期:
2017-08-29
修回日期:
2017-11-22
出版日期:
2018-05-10
发布日期:
2018-05-10
通讯作者:
李刚华
基金资助:
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
摘要:
【目的】本研究旨在探明水卷苗机插高产适宜的播种量。【方法】以长江中下游地区代表性品种武运粳24号(常规粳稻)和6两优9368(杂交籼稻)为供试材料,研究不同播种量对水卷苗秧苗素质、机插质量、大田生长特性及产量的影响。【结果】移栽前秧苗地上部和根系干物质量、发根力、根系活性、成苗率、苗基宽、重高比及光合速率均随着播种量的降低而显著增强,叶面积指数显著下降。小播量处理秧苗返青活棵快、分蘖发生力强、每穗粒数多,但播量过小导致基本苗和穗数不足,当武运粳24号播种量从180g/盘降低到120g/盘(738.9g/m2)、6两优9368播种量从110g/盘降低到70g/盘(431.0g/m2)时,产量没有显著变化;但播种量继续降低,产量均显著下降。【结论】水卷苗育秧方法适宜播种量,常规粳稻为2.03粒/cm2,杂交籼稻为1.14粒/cm2。
中图分类号:
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.
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.
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 |
表1 播种量设置
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 |
图1 播种量对机插水卷苗成苗率及单位面积成苗数的影响
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).
图2 播种量对机插水卷苗秧苗形态指标的影响柱上不同小写字母表示同一品种下在5%水平上差异显著(n=3,最小显著差数法)。下同。
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.
图3 苗床单位面积成苗数和叶面积及比叶重相关性分析
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 |
表2 播种量对机插水卷苗秧苗物质积累的影响
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 |
图4 播种量对机插水卷苗移栽前净光合速率(Pn)的影响
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 |
表3 播种量对水卷苗机插质量的影响
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 |
图5 播种量和机插空穴率及基本苗数相关性分析
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).
图6 播种量对机插水卷苗群体茎蘖动态(A, B)及单株分蘖发生动态(C, D)的影响
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).
图7 播种量对机插水卷苗分蘖发生力的影响
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).
图8 播种量对机插水卷苗关键生育期干物质积累的影响 TS–移栽期; PI–穗分化期; HS–抽穗期; MS–成熟期。
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 |
表4 播种量对机插水卷苗育秧方法产量及产量构成的影响
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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