Analysis of Dry MatterAccumulation and Lodging Resistance of Machine-Transplanted Indica Rice

doi:10.3969/j.issn.1006-8082.2021.05.021

China Rice ›› 2021, Vol. 27 ›› Issue (5): 97-101.DOI: 10.3969/j.issn.1006-8082.2021.05.021

• Special Thesis & Basic Research • Previous Articles Next Articles

Analysis of Dry MatterAccumulation and Lodging Resistance of Machine-Transplanted Indica Rice

Guiyong LI¹(), Meifeng SHI², Qinglan HE³, Haiping ZHU¹, Qiongmei XIA¹, Ruiping LONG¹, Anfeng DENG¹, Congdang YANG^1,^*()

¹Food Crops Research Institute, Yunnan Academy of Agricultural Sciences, Kunming 650205, China
²Comprehensive Agricultural Service Center of Sanchuan Town, Yongsheng County, Yongsheng, Yunnan 674208, China
³Yongsheng Agricultural Technology Extension Center, Yongsheng, Yunnan 674200, China

Received:2021-06-18 Online:2021-09-20 Published:2021-09-20
Contact: Congdang YANG
About author:
1st author: liguiy980200@163.com

机插籼稻干物质积累和抗倒伏能力分析

李贵勇¹(), 石美凤², 何清兰³, 朱海平¹, 夏琼梅¹, 龙瑞平¹, 邓安凤¹, 杨从党^1,^*()

¹云南省农业科学院粮食作物研究所,昆明650205
²永胜县三川镇农业综合服务中心,云南永胜674207
³永胜县农业技术推广中心,云南永胜674200

通讯作者: 杨从党
作者简介:
第一作者：liguiy980200@163.com
基金资助:
云南省重大科技专项计划项目（202102AE 090004）;云南省财政部门预算项目重大专项（530000210000000013809）;云南省芒市优质米产业科技特派团（202104BI090025）;国家重点研发计划项目（2016YFD0300506,2017YFD030010203）

Abstract

Abstract:

In order to explore the relationship between dry matter accumulation, lodging resistance and yield of machine-transplanted indica rice varieties, the dry matter accumulation, lodging index, yield and other agronomic characteristics of 19 machine-transplanted indica rice varieties planted in a large area in Yunnan Province were investigated and analyzed. The results showed that the average yield of 19 machine-transplanted indica rice was 11 457.46 kg/hm²; the dry matter accumulation from tillering to jointing, jointing to heading, and heading to maturity accounted for 23.14%, 30.22%, and 83.71% of the yield, respectively; the export percentage and translocation percentage of stem-sheaths were 29.68% and 22.38%, respectively. Lodging risk from high to small is N5 internode>N4 internode>N3 internode. There was no significant correlation between lodging index of N3 internode, N4 internode and N5 internode. The correlation coefficient between dry matter accumulation after heading and yield was the highest, at 0.92, reaching a very significant level. The results could provide a theoretical basis for the selection of high-yield varieties of machine-transplanted indica rice.

Key words: machine-transplanted, rice, dry matter accumulation, lodging resistance, yield

摘要：

为探讨机插籼稻品种的干物质积累、抗倒伏能力与产量的关系,对云南省大面积种植的19个机插籼稻品种的干物质量、倒伏指标、产量等农艺性状进行了调查分析。结果表明,机插籼稻平均产量为11 457.46 kg/hm²,分蘖至拔节期、拔节至抽穗期、抽穗至成熟期的干物质积累量分别占产量的23.14%、30.22%、83.71%,茎鞘物质输出率、转化率分别为29.68%、22.38%;倒伏风险由大到小为N5节间> N4节间> N3节间;N5、N4、N3节间的倒伏指数与产量相关性不显著,抽穗后的干物质积累与产量相关系数最大,为0.92,达极显著水平。结果可为机插籼稻高产品种筛选提供依据。

关键词: 机插, 水稻, 干物质积累, 抗倒伏能力, 产量

CLC Number:

S511

Guiyong LI, Meifeng SHI, Qinglan HE, Haiping ZHU, Qiongmei XIA, Ruiping LONG, Anfeng DENG, Congdang YANG. Analysis of Dry MatterAccumulation and Lodging Resistance of Machine-Transplanted Indica Rice[J]. China Rice, 2021, 27(5): 97-101.

李贵勇, 石美凤, 何清兰, 朱海平, 夏琼梅, 龙瑞平, 邓安凤, 杨从党. 机插籼稻干物质积累和抗倒伏能力分析[J]. 中国稻米, 2021, 27(5): 97-101.

Figures/Tables 5

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Analysis of Dry MatterAccumulation and Lodging Resistance of Machine-Transplanted Indica Rice

机插籼稻干物质积累和抗倒伏能力分析

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