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棉花学报 ›› 2017, Vol. 29 ›› Issue (6): 513-524.doi: 10.11963/1002-7807.zxcdh.20171016

• 研究与进展 • 上一篇    下一篇

长江流域大麦后直播棉集中成铃与高产协同表达群体株型特征

张祥1,4,胡大鹏1,李亚兵2,田巧凤1,王国平2,卢俊3,花明明1,3,陈源1,陈德华1*   

  1. 1. 扬州大学农学院江苏省作物遗传生理国家重点实验室培育点,江苏 扬州 225009;2. 中国农业科学院棉花研究所,河南 安阳 455000;3. 江苏金色农业科技发展有限公司,江苏 盐城 224000;4. Plant Genome Mapping Laboratory,University of Georgia,Athens,GA 30605,USA
  • 收稿日期:2017-12-29 出版日期:2017-11-15 发布日期:2017-11-15
  • 通讯作者: cdh@yzu.edu.cn
  • 作者简介:张祥(1981―),男,副教授,yzzhangxiang@163.com
  • 基金资助:
    国家现代农业产业技术体系(CARS-18-18),国家重点研发计划(2017YFD0201306),国家自然科学基金(31671613、31471435),江苏省农业三新工程[SXGC(2016)320],中国农业科学院科技创新工程(植棉技术标准化团队,2016PCTS-1),国家博士后基金(2016M591934),江苏省博士后基金(1601116C),江苏省高校优势学科建设工程,江苏高校品牌专业建设工程,江苏省高等学校自然科学研究重大项目(17KJA210003)

The Plant Architecture of Direct-Sowing Cotton Planted after Barley Harvested with High Yield and Centralized Boll-Setting

Zhang Xiang1,4, Hu Dapeng1, Li Yabing2, Tian Xiaofeng1, Wang Guoping2, Lu Jun3, Hua Mingming1,3, Chen Yuan1, Chen Dehua1*   

  1. 1. Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, College of Agriculture, Yangzhou University, Yangzhou, Jiangsu 225009, China; 2. Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, Henan 455000, China; 3. Jiangsu Golden Agriculture Co., LTD, Yanchen, Jiangsu 224000, China; 4. Plant Genome Mapping Laboratory, University of Georgia, Athens, GA 30605, US
  • Received:2017-12-29 Online:2017-11-15 Published:2017-11-15

摘要: 【目的】研究品种和氮肥运筹对麦后直播棉成铃、产量和株型影响,明确长江流域棉花集中成铃与高产协同表达群体株型特征。【方法】采用大田试验,2014年和2015年前茬均为大麦,2014年以国欣12-1、宜机棉、鲁棉研36为供试品种,设计2种氮肥用量水平(45 kg·hm-2、150 kg·hm-2);2015年进一步以国欣12-1为材料,设置2个缓释肥纯氮用量(150 kg·hm-2、225 kg·hm-2)和2种运筹(苗肥和花肥质量比分别为70%∶30%和100%∶0)处理,并以常规施肥(纯氮150 kg·hm-2)和不施肥为对照。【结果】2014年施纯氮150 kg·hm-2时,国欣12-1籽棉产量达4 014.72 kg·hm-2且显著高于其它处理;2015年苗期一次性施入缓释肥氮素用量150 kg·hm-2的处理比常规施肥处理增产30.96%;前述2个处理下,国欣12-1成铃也较为集中, 8月15日至8月30日成铃数占总成铃数比率(成铃率)分别达31.8%,26.1%,均高于其它处理。相关分析表明同期成铃率与籽棉产量极显著正相关(r2014=0.948**、r2015=0.976**)。进一步分析株型指标与8月15日至8月30日成铃率、籽棉产量的关系,提出了长江流域大麦后直播棉群体优化指标。【结论】大麦后直播棉群体优化指标可以实现高产和集中成铃的协同表达。

关键词: 大麦后直播棉; 氮肥; 株型; 集中成铃; 高产

Abstract: [Object] The study was conducted to investigate the plant architecture characteristic of direct sowing cotton planted after barely harvested with high yield and centralized boll-setting in the Yangtze River basin. [Method] In 2014, the cultivars Guoxin 12-1, Yijimian and Lumianyan 36  were used and the two conventional fertilizer (CF) application rates (namely pure nitrogen 45 kg·hm-2, 150 kg·hm-2) and Guoxin 12-1 was used in 2015. Two slow release fertilizer (SR) utilization rates (namely pure nitrogen 150 kg·hm-2 and 225 kg·hm-2) and two SR topdressing at different growth stages (namely 100% topdressing at seedling stage, 70% topdressing at seedling stage + 30% at flowing stage) were set with CF (pure nitrogen 150 kg·hm-2) and no fertilizer treatment as the controls. [Result] While the pure nitrogen (CF) amount was 150 kg·hm-2, the seed cotton yield of Guoxin 12-1 were 4 014.72 kg·hm-2. In 2015, the seed cotton yield for the treatment, application SR (pure nitrogen 150 kg·hm-2) and application ratios of seedling stage and flowering stage of 100% and 0, respectively, increased by 30.96%. The ratios of bolls setting from 08-15 to 08-30 to total bolls (RBT) for the two treatments were 31.8% and 26.1%, respectively. Then a significantly positive correlation between the seed cotton yield and RBT was found(r2014=0.948**, r2015=0.976**). Based on the analysis of relationship between the plant architecture indexes and RBT, plant architecture characteristics of cotton population with high yield and centralized boll-setting was proposed. [Conclusion] These indexes would be used to supervise the cotton culture management to achieve high yield and centralized boll-setting for the direct sowing cotton planted after barely harvested.

Key words: direct sowing cotton planted after barley harvested; nitrogen; plant type; centralized boll-setting; high-yield

中图分类号: 
  • S562.04