Quantitative observation on the root system of various crops growing in the field
Quantitative observation on the root system of various crops growing in the field
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DOI：
10.1080/00380768.1990.10416917
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发表时间：
1990-07
影响因子：
2
通讯作者：
J. Yamaguchi;A. Tanaka
中科院分区：
文献类型：
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作者：
J. Yamaguchi;A. Tanaka
摘要1.水稻（淹水），小麦，玉米，大豆，马铃薯和甜菜种植在有和没有氮的领域，和根系的各种性状进行了定量测定的生长阶段时，根系已经完全发展。2.单位面积根系总长度为21（马铃薯）~ 86（小麦）km-m-2。马铃薯的总表面积仅为22 m2·m−2，水稻、小麦和玉米的总表面积约为90 m2·m−2。总体积在1.8（马铃薯）至13（玉米）升-m-2的范围内。玉米的平均直径为0.56 mm，其他作物的平均直径为0.33-0.39 mm。当施氮时，这些值通常增加。3.水稻根系较浅，玉米根系较深。90%根系分布的土层深度水稻为23 cm，马铃薯和大豆为35-38 cm，甜菜和小麦为48-51 cm，玉米为59 cm。4.根系密度（单位土壤体积中各种根系性状的值）在上层土壤中最大。
Abstract 1. Rice (flooded), wheat, maize, soybean, potato, and sugarbeet were grown in fields with and without nitrogen application, and various traits of the root system were quantitatively measured at the growth stage when the root system had fully developed. 2. The total length of the whole root system per unit field area ranged from 21 (potato) to 86 (wheat) km-m−2. The total surface area was only 22 m2-m−2 in potato and about 90 m2-m−2 in rice, wheat, and maize. The total volume was in the range of 1.8 (potato) to 13 (maize) liters -m−2. The mean diameter was 0.56 mm in maize and 0.33-0.39 mm in the other crops. These values generally increased when nitrogen was applied. 3. The root system was shallower in rice, and deeper in maize than in the other crops. Soil depth where 90% of the roots were distributed was 23 cm in rice, 35-38 cm in potato and soybean, 48-51 cm in sugarbeet and wheat, and 59 cm in maize. 4. The root density (value of various root traits per unit soil volume) in the upper soil lay...