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[1]韦叶娜 赵 祥 杨国涛,王学春 彭友林 胡 瑶 胡运高**.栽培密度对不同穗型水稻群体小气候及产量构成的影响*[J].应用与环境生物学报,2018,24(05):1-17.[doi:10.3724/SP.J.1145.2017.12049]
 WEI Yena,ZHAO Xiang,YANG Guotao,et al.Effects of planting density on microclimate of rice population and its yield components with different panicle-type*[J].Chinese Journal of Applied & Environmental Biology,2018,24(05):1-17.[doi:10.3724/SP.J.1145.2017.12049]
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栽培密度对不同穗型水稻群体小气候及产量构成的影响*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
24卷
期数:
2018年05期
页码:
1-17
栏目:
研究论文
出版日期:
2018-10-25

文章信息/Info

Title:
Effects of planting density on microclimate of rice population and its yield components with different panicle-type*
文章编号:
201712049
作者:
韦叶娜1 赵 祥1 杨国涛1 2 王学春1 彭友林1 胡 瑶1 胡运高1**
1西南科技大学水稻研究所 绵阳 6210102四川农业大学 温江 611130
Author(s):
WEI Yena1 ZHAO Xiang1YANG Guotao12WANG Xuechun1PENG Youlin1HU Yao1&HU Yungao1**
1Rice Research Institute, Southwest University of Science and Technology, Mianyang 621010, China?
2Sichuan Agricultural University, Wenjiang 611130, China
关键词:
水稻穗型密度小气候产量群体特征
Keywords:
Rice Panicle-type Planting density Microclimate Yield Population characteristics
DOI:
10.3724/SP.J.1145.2017.12049
摘要:
通过裂区试验(品种为主因素)分析R498(弯曲穗)及R499(直立穗)在0.23 m(行距)×0.12 m(穴距)、0.27 m×0.14 m、0.33 m×0.17 m、0.38 m×0.20 m、0.40 m×0.21 m栽培密度条件下齐穗期和齐穗后20 d群体小气候及群体特征的响应情况。本试验结果表明,在各栽培密度条件下,R499齐穗期群体最高温度平均值均较R498高1.52 ,齐穗后20 d,R499群体最高温度平均值较R498低0.66 ;齐穗期,R498、R499在稀植(0.38 m×0.20 m、0.40 m×0.21 m)时日平均光照强度较强,其中较最低光照分别高43.56%、16.22%,而齐穗后20 d,R498在密植(0.23 m×0.12 m、0.27 m×0.14 m)时日平均光照受抑制,R499在稀植时受抑制;R498、R499垂直光照在稀植时降低程度最大,在齐穗期分别降低97.96%、92.56%,齐穗后20 d分别降低94.81%、91.10%;随栽培密度的减小,R499株高、分蘖、穗弯曲度变化程度较R498更大;R498、R499在0.38 m×0.20 m处理下纹枯病发病率最严重,分别为66.67%、68.89%;两个材料产量均在0.27 m×0.14 m处理下有最大值,且增产是通过有效穗数、穗重来实现的,而当密度过度减小时,R499产量性状将不再增长。综上,弯曲穗型水稻(R498)不适宜过度密植及稀植,直立穗型水稻(R499)可适当密植。(图8表3参41)
Abstract:
Split-plot field experiment, with variety as main plot, designed to analyze microclimate and character of R498 (curved panicle) and R499 (erect panicle) during the full heading day and the 20th day after full heading. Planting density as the subplot designed as 0.23 m (line spacing)×0.12 m (hole spacing), 0.27 m×0.14 m, 0.33 m×0.17 m, 0.38 m×0.20 m, 0.40 m×0.21 m. Results showed, in comparison of R498, the maximum temperature of R499 increased 1.52 ℃ during full heading stage on average; but deceased 0.66 ℃ at 20th day after full heading for all planting density treatments. The daily mean light intensity of R498 and R499 in sparse planting (0.38 m×0.20 m, 0.40 m×0.21 m) were higher than other planting density treatments during full heading stage, and it was 43.56% and 16.22% higher than the daily lowest light intensity respectively. The daily light intensity of R498 hindered by close planting while R499 inhibited by sparse planting at the 20th day after full heading. The decreasing rate of vertical light intensity of R498 and R499 in sparse planting was the highest among all the planting density treatments, and their decreasing rate were 97.96% and 92.56% respectively during full heading stage, with the decreasing rate of 94.81% and 91.10% respectively at 20th day after full heading. With the decreasing of planting density, the variability of plant height, tiller number and panicle curvature of R499 was greater than that of R498. Incidence rate of sheath blight in the planting specification of 0.38 m×0.20 m were 66.67% and 68.89% for R498 and R499 respectively, which was the most serious than other planting density treatments. By increasing effective tiller and panicle weight, R498 and R499 both got highest yield in the planting specification of 0.27 m×0.14 m among all planting density treatments. The value of yield components would not increase any more when the density was excessive decrease. It is better to plant curved panicle rice (R498) in a reasonable planting density (neither too closed nor too sparse), and to plant erect panicle rice in a reasonable compact planting density.

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备注/Memo

备注/Memo:
收稿日期: 2017-12-26 接受日期: 2018-01-22?
*国家重点研发计划项目(2017YFD0100206,2016YFD0300210)、国家自然基金项目(31401347)、国家现代农业产业技术体系四川水稻创新团队岗位专家项目(川农业函[2014]91号)、四川省育种攻关项目(2016NYZ0028)和四川省科技厅国际合作项目(18GJHZ0204)资助?
**通讯作者(E-mail: swust.rri@163.com)
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更新日期/Last Update: 2018-02-07