白刺根系的研究

A Study on Root System of Nitraria Tangutorum

白刺是荒漠、半荒漠地区建群植物种之一,是骆驼和绵羊、山羊较重要的饲草。根系研究表明,白刺根系入土较浅,侧根发达。根系分布与土壤水分、紧实度有密切的关系。平均冠幅为0.87m^2的白刺单株,根系干重72.1g,体积233cm^3,根系总长536.1m,根系表面积1.06m^2,且都以0—40cm土层占的比例较大。

Nitraria tangutorum, a forage grass, is one of the constructive plants in desert and sernidesert areas. Study on its root system shows that main root of Nitraria tangutorum is distributed in the shallow soil layer and the distribution of root system is closely correlated with the soil moisture. Average dry weight of single plant root system is 72. 1g, the volume 233cm3, the length 536. 1m, the surface area 1. 06m2. Most of them is distributed in the soil layer of 0-40cm.