ACTA AGRICULTURAE BOREALI-SINICA ›› 2006, Vol. 21 ›› Issue (6): 89-94. doi: 10.3321/j.issn:1000-7091.2006.06.022

Special Issue: Rice

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Influences of Low Potash on K Absorption and Use Efficiency of Different Panicle Rice Variety

SONG Gui-yun1,2, XU Zheng-jin2, CHEN Wen-fu2, ZHANG Wen-zhong2, HE Mei2, ZHANG Xi-juan2   

  1. 1. Agricultural College, Innermongolia University for Nationalities, Tongliao 028042, China;
    2. Shenyang Agricultural University, Shenyang 110161, China
  • Received:2006-04-26 Published:2006-12-28

Abstract: The typical erect panicle rice variety Shennong 265,and semi-erect panicle rice variety Liaojing 294 were used to compare dry matter accumulation,absorption and use efficiency of potassium.The results showed that the grain yield and biomass of two varieties similarly decreased under low potassium condition;however the decrease of Liaojing 294 was more than that of Shennong 265.The summit of potassium accumulation of two varieties was from tiller stage to heading stage,and up to 2/3 of total potassium accumulation of whole growth period.Liaojing 294 accumulated more potassium before heading than after heading and Shennong 265 was contray.This showed that the erect panicle rice variety had more vigorous root,absorbed more nutrient,beared low potassium,and had higher efficiency of potassium utilization.

Key words: Erect panicle rice variety, K utilization efficiency, K efficiency, Ability of bearing low potassium

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Cite this article

SONG Gui-yun, XU Zheng-jin, CHEN Wen-fu, ZHANG Wen-zhong, HE Mei, ZHANG Xi-juan. Influences of Low Potash on K Absorption and Use Efficiency of Different Panicle Rice Variety[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(6): 89-94. doi: 10.3321/j.issn:1000-7091.2006.06.022.

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