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Acta Agron Sin ›› 2017, Vol. 43 ›› Issue (04): 581-595.doi: 10.3724/SP.J.1006.2017.00581


Effect of Mechanical Transplanting with Pothole Seedlings on Grain Quality of Different Types of Rice in Rice-Wheat Rotation System

XING Zhi-Peng,ZHU Ming, WU Pei,QIAN Hai-Jun,CAO Wei-Wei,HU Ya-Jie,GUO Bao-Wei,WEI Hai-Yan,XU Ke,HUO Zhong-Yang,DAI Qi-Gen,ZHANG Hong-Cheng*   

  1. Key Laboratory of Crop Genetics & Physiology of Jiangsu Province, Yangzhou University / Innovation Center of Rice Technology in Yangtze Rice Valley, Ministry of Agriculture, Yangzhou University, Yangzhou 225009, China
  • Received:2016-10-24 Revised:2016-11-21 Online:2017-04-12 Published:2017-02-10
  • Contact: Zhang Hongcheng, E-mail: hczhang@yzu.edu.cn, Tel: 0514-87979220 E-mail:xing_pengpeng@126.com
  • Supported by:

    This study was supported by the National Key Technology Support Program of China (2011BAD16B03), the Agricultural Technology Innovation Program of Jiangsu Province (CX[15]1002), the Jiangsu Provincial Technology Support Program (BE2015340), and the Research Innovation Program for College Graduates of Jiangsu Province (KYLX15_1369).


In rice-wheat rotation system, the mechanical transplanting with pothole seedlings (MT) is a new developed high yield and high efficiency rice planting method with increased promotion area year by year. Understanding the rice quality traits under MT method is of great importance to study and develop high yield and high quality cultivation techniques under mechanical conditions in rice-wheat rotation system. The comparison experiments were carried out to investigate the difference in processing, appearance, nutrition, cooking and eating, and taste quality, and starch RVA profile of conventional japonica, indica hybrid and japonica-indica hybrid rice, by using MT, mechanical transplanting with carpet seedlings (MC) and mechanical direct seeding (MD) in high-yield cultivation condition, which would provide theoretical reference and practice data for high yield and high quality rice production. The head rice rate and head rice yield under MT were 1.6% and 7.8% larger than those under MC, and 4.9% and 25.9% larger than those under MD (P<0.05), respectively, indicating a better processing quality under MT method. Compared with MC and MD, MT decreased appearance quality with increased chalky grain rate, chalkiness size and chalkiness degree (P<0.05), and increased protein content and nutrition quality with the increase of 8.7% and 28.0% in protein yield, respectively. The effects on amylose content, setback and pasting temperature were MTMC>MD, which indicated that the cooking and eating quality under MT method might be meliorated. The taste quality was no significant difference among planting methods, showing a tendency of MTMT>MD for indica hybrid rice. Therefore the MT method is recommended as one of promising mechanized planting methods to simultaneously realize high yield, high efficiency and high quality in rice production of rice-wheat rotation system.

Key words: Rice, Rice-wheat rotation system, Mode of mechanized planting, Pothole seedling of mechanical transplanting, Grain yield, Grain quality

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