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作物学报 ›› 2013, Vol. 39 ›› Issue (06): 1089-1095.doi: 10.3724/SP.J.1006.2013.01089

• 耕作栽培·生理生化 • 上一篇    下一篇

30%矮•烯微乳剂对水稻茎秆理化特性的调控

张倩1,张明才1,张海燕2,谭伟明1,李召虎1,段留生1,*   

  1. 1 植物生长调节剂教育部工程研究中心 / 中国农业大学农学与生物技术学院, 北京100193;2 黑龙江农垦八五零农场, 黑龙江虎林158422
  • 收稿日期:2012-05-16 修回日期:2012-12-06 出版日期:2013-06-12 网络出版日期:2013-03-22
  • 基金资助:

    本研究由国家“十一五”科技支撑计划项目(2006BAD02A00)和国家高技术研究发展计划(863计划)项目(2006AA10A213)资助。

Effects of Clomequat-Uniconazole 30% Micro-Emulsion on Stem Physical and Chemical Characteristics of Rice

ZHANG Qian1,ZHANG Ming-Cai1,ZHANG Hai-Yan2,TAN Wei-Ming1,LI Zhao-Hu1,DUAN Liu-Sheng1,*   

  1. 1 Engineering Research Center of Plant Growth Regulator, Ministry of Education / College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China; 2 Heilongjiang 850 Farm, Hulin 158422, China
  • Received:2012-05-16 Revised:2012-12-06 Published:2013-06-12 Published online:2013-03-22

摘要:

寒倒伏是限制地水稻高产潜力充分发挥的因素之一。试验以垦稻12为材料,于水稻拔节初期叶面喷施30%·烯微乳剂,研究其对水稻茎秆形态建成、物质积累及产量构成因素的调控作用。结果表明,30%·烯微乳剂1.2 L hm-2处理,能够显著缩短茎秆基部第1、第2节间的长度,增加基部节间粗度;显著缩小茎秆细胞宽度,增强细胞排列紧实度;改善茎秆的抗折性,茎秆弯曲折断强度和径向压缩强度比对照分别提高152.4%82.5%;显著提高水稻齐穗期茎秆基部节间的碳氮比和灌浆后期茎秆中纤维素、半纤维素和木质素含量,显著降低处于固定伸长期的第2节间GA3含量;改善水稻产量构成因素,提高了产量。综上所述,30%·烯微乳剂有利于提高水稻茎秆的抗倒伏能力,增加水稻产量。

关键词: 30%矮•烯微乳剂, 水稻, 茎秆, 理化特性, 细胞解剖结构;产量

Abstract:

Lodging is one of the most restrictive factors of cold ground rice to achieve higher yield. Using a cultivars Kendao 12 at the early jointing sprayed with a new plant growth regulator 30% chlormequat-uniconazole ME, we studied the effect of it on morphological and physiological characteristics, yield and yield components. The results indicated that 1.2 L ha-1 treatment of 30% chlormequat-uniconazole ME on rice leaves could markedly shorten the length of basal internodes and increase the diameter of them. In addition, cell microscopy showed that tight degree of cell in 1.2 L ha-1 treatment was enhanced, and the cells got shorten. Through the improvement of stem morphological characteristics, the bend breaking strength and radial compressive strength were respectively increased by 152.4% and 82.5% as compared with CK. The plant growth regulation could significantly increase the C/N value in the basal internode of stem at full-heading stage; increase contents of hemicellulose, cellulose and lignin of stem at later grain filling stage; significantly reduce GA3 content in the 2nd internodes; and improve rice yield and its components. Generally speaking, 30% chlormequat-uniconazole ME can enhance the quality of stem to improve lodging-resistance of rice.

Key words: 30% chlormequat-uniconazole ME, Rice, Stem, Physical and chemical characteristics, Cell anatomic structure, yield

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