Study on Root Space Distribution in Soil and Nutrient Uptake in Elephant Grass and Imperial Grass

doi:10.11733/j.issn.1007-0435.1999.01.004

›› 1999, Vol. 7 ›› Issue (1): 22-27.DOI: 10.11733/j.issn.1007-0435.1999.01.004

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Study on Root Space Distribution in Soil and Nutrient Uptake in Elephant Grass and Imperial Grass

Qi Zhiping¹, I. M. Rao², J. Ricaurte²

1. Tropical Field Crops and Animal Husbandry Research Institute, Chinese Academy of Tropical Agriculture Science, Hainan 571737;
2. International Center for Tropical Agriculture Cali, Colombia A. A. 6713

Online:1999-02-15 Published:1999-02-15

象草和壮丽草根系空间分布及养分吸收研究

漆智平¹, I. M. Rao², J. Ricaurte²

1. 中国热带农业科学院农牧研究所, 海南, 571737;
2. 哥伦比亚国际热带农业中心, 卡利, A.A6713

基金资助:
国家外专局资助

Abstract

Abstract: Elephant grass and Imperial grass were selected to study the properties of root space distribution and nutrient uptake. The results indicated that there were 85% roots to distribute in the layer of 0～40 cm in soil for the two grasses. The root biomass of elephant grass was two-fold greater than that of the imperial grass. The leaf/stem ratio of elephant grass and imperial grass were 2.76 and 1.24,respectively. The mineral nutrient in shoot of elephant grass was higher than that of the imperial grass.

Key words: Elephant grass, Imperial grass, Root space distribution in soil, Nutrient uptake

摘要： 研究两种禾本科牧草根系空间变异及养分吸收特性。结果表明:象草和壮丽草的根系有85％以上分布在0～40cm的土层中。象草根系生物量比壮丽草高2倍。象草和壮丽草根重与茎叶重的比值分别为2.76和1.24。象草茎叶中矿物质养分的含量高于壮丽草。

关键词: 象草, 壮丽草, 根系空间分布, 养分吸收

Qi Zhiping, I. M. Rao, J. Ricaurte. Study on Root Space Distribution in Soil and Nutrient Uptake in Elephant Grass and Imperial Grass[J]. , 1999, 7(1): 22-27.

漆智平, I. M. Rao, J. Ricaurte. 象草和壮丽草根系空间分布及养分吸收研究[J]. , 1999, 7(1): 22-27.

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Study on Root Space Distribution in Soil and Nutrient Uptake in Elephant Grass and Imperial Grass

象草和壮丽草根系空间分布及养分吸收研究

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