中国农业科学 ›› 2022, Vol. 55 ›› Issue (4): 666-679.doi: 10.3864/j.issn.0578-1752.2022.04.004
王亚梁1(),朱德峰1(
),陈若霞2,方文英3,王晶卿1,向镜1,陈惠哲1,张玉屏1,谌江华2
收稿日期:
2021-04-06
接受日期:
2021-07-05
出版日期:
2022-02-16
发布日期:
2022-02-23
通讯作者:
朱德峰
作者简介:
王亚梁,E-mail: 基金资助:
WANG YaLiang1(),ZHU DeFeng1(
),CHEN RuoXia2,FANG WenYing3,WANG JingQing1,XIANG Jing1,CHEN HuiZhe1,ZHANG YuPing1,CHEN JiangHua2
Received:
2021-04-06
Accepted:
2021-07-05
Online:
2022-02-16
Published:
2022-02-23
Contact:
DeFeng ZHU
摘要:
【目的】明确杂交稻低播种量下精准条播(precision drill sowing,PS)育秧提高机插群体均匀度和产量的效应,创建杂交稻毯苗稀播少本机插理论与技术。【方法】选用籼粳杂交稻甬优1540为供试品种,在余杭区崇化村和富阳区中国水稻研究所试验基地开展试验。以传统撒播(broadcast sowing,BS)育秧机插为对照,设计标准9寸秧盘横向取秧18穴,纵向取秧40穴的精准条播育秧机插方式,机插每穴播种量为2.5粒(T1,43.2 g/盘),3.5粒(T2,60.5 g/盘),4.0粒(T3,69.1 g/盘),考察种子分布均匀度、秧苗素质、机插质量、机插群体干物质生产、有效穗数均匀度及产量结构的变化。【结果】(1)与BS相比,PS提高了种子分布均匀度。(2)PS显著提高了秧苗素质,增加了秧苗的干物质积累和秧苗均匀度。与BS相比,不同播量下PS的秧苗均匀度平均提高47.5%,播量越低,PS对秧苗均匀度的提高作用越明显。(3)与BS相比,PS的机插漏秧率平均降低了8.9个百分点。同时PS使机插苗数均匀度平均提高了87.8%,其中T2处理PS机插每穴2—3苗比例最高,机插苗数均匀度最好。(4)PS通过提高机插群体的分蘖高峰苗数进而提高有效穗数,在不同播种量下,PS机插群体的有效穗数平均增加6.7%,同时使有效穗数均匀度提高40.2%,其中T2处理下PS机插群体的有效穗数和有效穗数均匀度最高,同时PS提高了机插群体的叶面积指数和干物质积累。(5)不同播量下PS通过增加机插群体的有效穗数使产量平均增加9.0%,其中T2处理产量最高,随着播量的增加,PS机插相对于BS机插的产量增加幅度下降,同时机插苗单株对产量的贡献率降低。(6)相关性分析表明,机插群体有效穗数均匀度和叶面积指数、干物质积累及水稻产量呈显著正相关。【结论】精准条播育秧机插通过提高种子分布均匀度,降低机插漏秧率,提高机插苗数均匀度,进而提升了杂交稻机插群体均匀度和产量,是在毯苗条件下实现杂交稻低播量丰产种植的有效方式。
王亚梁,朱德峰,陈若霞,方文英,王晶卿,向镜,陈惠哲,张玉屏,谌江华. 杂交稻低播量精准条播育秧机插提高群体均匀度和产量的效应分析[J]. 中国农业科学, 2022, 55(4): 666-679.
WANG YaLiang,ZHU DeFeng,CHEN RuoXia,FANG WenYing,WANG JingQing,XIANG Jing,CHEN HuiZhe,ZHANG YuPing,CHEN JiangHua. Beneficial Effects of Precision Drill Sowing with Low Seeding Rates in Machine Transplanting for Hybrid Rice to Improve Population Uniformity and Yield[J]. Scientia Agricultura Sinica, 2022, 55(4): 666-679.
表2
不同播种量下播种方式对秧苗素质的影响"
试验点 Site | 播种量 Seeding rate | 播种方法 Sowing method | 成苗率 Seedling rate (%) | 苗高 Seedling height (cm) | 叶龄 Leaf age | 茎叶干重 Biomass of stem and leaves (mg) | 根干重 Root biomass (mg) | 茎基宽度 Basal stem width (cm) | 秧苗均匀度 Seedling evenness (%) |
---|---|---|---|---|---|---|---|---|---|
余杭 Yuhang | T1 | 传统撒播 BS | 73.0±6.2 | 16.2±0.1 | 3.4±0.1 | 59.8±0.8 | 16.5±1.0 | 0.40±0.03 | 48.0±4.4 |
精准条播 PS | 72.7±2.5 | 15.5±0.4** | 3.3±0.1 | 63.0±1.1** | 16.3±0.6 | 0.41±0.03 | 84.0±3.6** | ||
T2 | 传统撒播 BS | 69.0±2.2 | 16.1±0.1 | 3.3±0.1 | 55.7±2.2 | 12.0±0.9 | 0.36±0.03 | 58.7±4.0 | |
精准条播 PS | 67.6±4.4 | 15.5±0.4** | 3.3±0.1 | 64.4±1.2** | 16.1±0.2** | 0.39±0.03 | 81.3±2.1** | ||
T3 | 传统撒播 BS | 77.3±4.8 | 16.8±0.1 | 3.3±0.1 | 52.9±1.6 | 12.4±0.9 | 0.33±0.03 | 64.0±5.6 | |
精准条播 PS | 74.6±4.0 | 16.2±0.3 | 3.4±0.1 | 62.7±1.6** | 16.1±0.5** | 0.34±0.02 | 81.7±2.3** | ||
富阳 Fuyang | T1 | 传统撒播 BS | 78.7±4.6 | 16.1±0.1 | 3.3±0.1 | 58.6±2.5 | 15.5±1.1 | 0.40±0.03 | 46.0±3.6 |
精准条播 PS | 74.1±5.8 | 15.7±0.4 | 3.3±0.0 | 64.2±0.5** | 16.3±0.5 | 0.42±0.03 | 84.3±4.0** | ||
T2 | 传统撒播 BS | 72.9±3.8 | 16.4±0.4 | 3.3±0.1 | 55.6±1.8 | 12.4±0.7 | 0.37±0.05 | 57.7±6.4 | |
精准条播 PS | 74.2±5.7 | 15.8±0.8 | 3.3±0.1 | 66.4±1.9** | 16.3±0.5** | 0.39±0.02 | 80.3±5.0** | ||
T3 | 传统撒播 BS | 71.7±8.8 | 16.9±0.4 | 3.3±0.1 | 52.9±1.0 | 12.2±0.5 | 0.30±0.03 | 60.7±8.6 | |
精准条播 PS | 72.1±3.8 | 16.5±0.2 | 3.4±0.1 | 62.9±1.0** | 16.1±0.5** | 0.34±0.02 | 73.3±1.5** | ||
试验点 Site | 0.64 | 2.05 | 0.13 | 0.42 | 0.53 | 0.07 | 0.20 | ||
播种量 Seeding rate | 1.30 | 15.44** | 0.17 | 14.69** | 39.25** | 28.12** | 1.12 | ||
播种方法 Sowing method | 0.37 | 21.33** | 0.84 | 211.20** | 155.05** | 7.23* | 175.25** | ||
试验点×播种量 Site × Seeding rate | 2.11 | 0.37 | 0.16 | 0.29 | 1.43 | 0.78 | 0.40 | ||
试验点×播种方法 Site × Sowing method | 0.02 | 0.41 | 0.01 | 2.01 | 1.08 | 0.41 | 0.20 | ||
播种量×播种方法 Seeding rate × Sowing method | 0.13 | 0.19 | 1.76 | 10.79** | 34.56** | 0.08 | 18.24** | ||
试验点×播种量×播种方法 Site × Seeding rate × Sowing method | 0.37 | 0.18 | 0.33 | 0.43 | 1.08 | 0.27 | 0.31 |
表3
不同播种量下播种方式对机插质量的影响"
试验点 Site | 播种量 Seeding rate | 播种方法 Sowing method | 漏秧率 Missing hill percent (%) | 机插苗数 Seedling number transplanted per hill | 机插苗数分布 Range of seedling number transplanted per hill | 机插苗数均匀度 The evenness of seedling number transplanted per hill | 机插2—3苗比例 The ratio of 2-3 seedling transplanted per hill (%) |
---|---|---|---|---|---|---|---|
余杭 Yuhang | T1 | 传统撒播 BS | 11.7±1.4 | 1.8±0.2 | 0-6 | 33.3±4.0 | 35.8±2.9 |
精准条播 PS | 6.7±1.4** | 1.8±0.1 | 0-4 | 56.5±2.9** | 61.7±7.6** | ||
T2 | 传统撒播 BS | 15.0±2.5 | 2.4±0.1 | 0-8 | 25.7±1.7 | 39.0±7.7 | |
精准条播 PS | 3.3±1.4** | 2.4±0.2 | 0-4 | 54.7±4.5** | 73.3±7.2** | ||
T3 | 传统撒播 BS | 10.8±2.9 | 3.1±0.5 | 0-11 | 42.3±2.1 | 35.8±2.9 | |
精准条播 PS | 1.7±1.4** | 3.1±0.1 | 0-6 | 59.5±4.1** | 42.3±2.1** | ||
富阳 Fuyang | T1 | 传统撒播 BS | 12.7±1.7 | 2.0±0.2 | 0-7 | 19.7±10.2 | 34.3±5.1 |
精准条播 PS | 3.2±0.5** | 2.0±0.0 | 0-4 | 58.1±5.0** | 66.7±5.8** | ||
T2 | 传统撒播 BS | 12.0±1.1 | 2.6±0.1 | 0-8 | 30.4±10.1 | 40.0±5.0 | |
精准条播 PS | 1.2±1.0** | 2.4±0.2 | 0-4 | 62.3±5.1** | 76.7±2.9** | ||
T3 | 传统撒播 BS | 7.5±0.7 | 2.9±0.4 | 0-11 | 39.4±1.1 | 36.0±3.6 | |
精准条播 PS | 0.2±0.3** | 3.1±0.1 | 0-6 | 67.0±2.8** | 45.0±5.0 | ||
试验点 Site | 16.2** | 0.6 | — | 0.2 | 10.70** | ||
播种量 Seeding rate | 17.3** | 98.8** | — | 15.6** | 7.01** | ||
播种方法 Sowing method | 296.3** | 0.1 | — | 249.9** | 324.31** | ||
试验点×播种量 Site × Seeding rate | 0.7 | 1.5 | — | 0.7 | 30.67** | ||
试验点×播种方法 Site × Sowing method | 0.3 | 0.3 | — | 7.3* | 1.11 | ||
播种量×播种方法 Seeding rate × Sowing method | 5.4** | 1.2 | — | 4.1 | 17.95** | ||
试验点×播种量×播种方法 Site × Seeding rate × Sowing method | 3.6 | 0.7 | — | 0.1 | 6.21** |
表4
不同播种量下播种方式对水稻产量及产量结构的影响"
试验点 Site | 播种量 Seeding rate | 播种方式 Sowing method | 有效穗数 Productive panicle number (×105·hm-2) | 每穗粒数 The number of spikelets per panicle | 结实率 Spikelet fertility rate (%) | 千粒重 1000-grain weight (g) | 产量 Yield (t·hm-2) |
---|---|---|---|---|---|---|---|
余杭 Yuhang | T1 | 传统撒播 BS | 22.5±0.3 | 270.2±4.0 | 82.4±0.9 | 23.5±0.1 | 11.8±0.3 |
精准条播 PS | 24.9±0.8** | 275.2±8.2 | 81.9±1.1 | 23.6±0.2 | 13.2±0.3** | ||
T2 | 传统撒播 BS | 23.7±1.0 | 272.9±7.2 | 82.2±1.0 | 23.7±0.1 | 12.6±0.4 | |
精准条播 PS | 25.8±0.4** | 273.7±3.0 | 83.4±2.0 | 23.6±0.2 | 13.9±0.3** | ||
T3 | 传统撒播 BS | 23.3±0.1 | 268.0±7.7 | 82.5±0.9 | 23.5±0.1 | 12.1±0.5 | |
精准条播 PS | 25.2±1.4** | 261.9±7.4 | 82.5±0.9 | 23.5±0.1 | 12.8±0.2 | ||
富阳 Fuyang | T1 | 传统撒播 BS | 17.9±0.3 | 249.7±9.8 | 82.5±0.9 | 23.7±0.1 | 8.7±0.1 |
精准条播 PS | 18.7±0.2** | 250.2±12.5 | 82.5±0.9 | 23.7±0.1 | 9.1±0.5** | ||
T2 | 传统撒播 BS | 18.1±0.5 | 248.7±6.4 | 81.9±0.3 | 23.5±0.1 | 8.9±0.2 | |
精准条播 PS | 20.6±0.4** | 255.2±2.8 | 81.3±0.6 | 23.6±0.1 | 10.1±0.2** | ||
T3 | 传统撒播 BS | 17.9±0.5 | 256.4±3.0 | 83.2±2.2 | 23.4±0.0 | 8.9±0.2 | |
精准条播 PS | 19.1±0.4** | 250.2±7.8 | 82.1±1.2 | 23.7±0.1 | 9.5±0.5 | ||
试验点 Site | 515.07** | 53.12** | 0.4 | 0.08 | 951.96** | ||
播种量 Seeding rate | 5.98** | 0.24 | 0.26 | 2.3 | 9.18** | ||
播种方法 Sowing method | 55.78** | 0.2 | 0.16 | 2.7 | 66.48** | ||
试验点×播种量 Site × Sowing rate | 0.48 | 3.4 | 1.45 | 1.61 | 0.16 | ||
试验点×播种方法 Site × Sowing method | 0.85 | 0.23 | 0.89 | 2.61 | 0.2 | ||
播种量×播种方法 Seeding rate × Sowing method | 1.03 | 0.79 | 0.37 | 1.9 | 3.83* | ||
试验点×播种量×播种方法 Site × Seeding rate × Sowing method | 0.99 | 0.51 | 0.67 | 2.61 | 0.12 |
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