Scientia Agricultura Sinica ›› 2008, Vol. 41 ›› Issue (6): 1611-1621 .doi: 10.3864/j.issn.0578-1752.2008.06.006

• TILLAGE & CULTIVATION·PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Cultivation Approaches and Techniques for Annual Super-high-yielding of Rice and Wheat in the Lower Reaches of Yangtze River

Yong DU LIU Hui   

  1. 扬州大学江苏省作物遗传生理重点实验室
  • Received:2007-05-28 Revised:2007-09-03 Online:2008-06-10 Published:2008-06-10

Abstract: Rice and wheat are most important food crops in China. The realization of their super-high-yielding has great significance in ensuring food security in this country. Based on our researches and practices in super-high-yielding, this paper introduced the cultivation approaches and key techniques for obtaining super-high-yielding of rice and wheat (annual grain yield > 21 t•ha-1). The main approaches included enlarging sink size through stabling panicle/spike number and increasing spikelets/grains per panicle/spike, improving population quality through increasing the percentage of productive tillers and grain-leaf ratio, enhancing sink (grain) strength through increasing sugar-spikelet ratio or sugar-grain ratio, increasing matter production capacity through fostering a healthy and strong root system during the grain filling period, and increasing harvest index through enhancing remobilization of assimilates from vegetative tissues to grains. The key techniques were nursing strong-seedlings/ precise-sowing, site-specific nutrient management, precise and quantitative water-saving irrigation, and chemical control. Key points for the super-high- yielding research in rice and wheat at present and in near future were suggested.

Key words: Rice, Wheat, Annual super-high-yielding, Cultivation approaches, Key techniques

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