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Volume 10 Issue 1
Apr.  2012
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Li Yithen, Huang Yumin, Zhuang Zhanlong, Huang Yachang, Yu Ruiyuan. Studies on Key Components for Obtaining High Grain Yield of Hybrid Rice[J]. Fujian Journal of Agricultural Sciences, 1995, 10(1): 1-6.
Citation: Li Yithen, Huang Yumin, Zhuang Zhanlong, Huang Yachang, Yu Ruiyuan. Studies on Key Components for Obtaining High Grain Yield of Hybrid Rice[J]. Fujian Journal of Agricultural Sciences, 1995, 10(1): 1-6.

Studies on Key Components for Obtaining High Grain Yield of Hybrid Rice

  • Received Date: 1994-11-16
  • Publish Date: 1995-03-15
  • The results indicated that, the annual averaged yield of hybrid rice with double cropping in Longhai was 15.6~17.6t/hm2. Among the components, the total grain number per unit area was the most important to the yield of high yielding field,and the panicle number was the most im-portant to total grain number per unit area. In high yielding condition, the modle of heading num-ber appeared “1+3+7”,i.e. under the condition of planting 25 hills in 1 m2 and one hill with one seedling, each hill will produce one main stem head, 3 tillering heads emerged during seedling peri-od and 7 tillering heads during early tillering period. More than 95% tillers emerged during seedling period was able to grow to heading. The effective tillers emerged in field-growing period were the ones emerged with the growth of first 4 leaves after transplanting, The end of effective tillering in field was found at the period when 2.0~3.5 leaves emerged before maximum tiller-ing. The remainder of leaf age after maximum tillering was 2.0~2.5 leaves, which was equal to the duration from secondary branch differentiation to spikelet differentiation.
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  • [4] 颜振德. 1980. 杂交水稻产量构成因素的研究. 水稻杂种优势的利用研究, 63-82. 农业出版社, 北京
    [9] Yoshida, s. 1981. Fundamentals of rice crop Science. IRRI
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