Root growth in rice and its response to soil density

Abstract

Abstract: Studies on root growth and vertical distribution at tillering(TL),panicle initiation(PI),flowering(FL) and mature(MT) stages and effects of soil compaction on root growth were carried out with hybrid rice of Shanyou 63 and 65002 in root box.The results indicated that root weight reached maximum at flowering stage and then decreased.With the advance of growth stage,percentage of deep roots(20～45cm in soil) increased.Root weight increased at highest rate and deep roots formed during the period of TLto PI.With increased soil weight density below 20 cm,root weight and percentage of deep roots markedly decreased.

Key words: Riec, Roots, Growth and distribution, Root box, Soil compaction, wetland plant combination, total nitrogen, total phosphorus, chemical oxygen demand, pH, removal efficiency

CLC Number:

S314

ZHU Defeng, LIN Xianqing, CAO Weixing . Root growth in rice and its response to soil density[J]. Chinese Journal of Applied Ecology, 2002, (1): 60-62.

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Root growth in rice and its response to soil density

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