The percentage of root biomass allocated to cluster roots increased in the soil layer supplemented with P in a split-root system.
在分根系统中，白羽扇豆的排根占根系干重的比例在局部供磷（羟基磷灰石）的土层中大量增加。
The soil moisture refers to the soil water status in the main root system activity layer of crops.
土壤墒情是指农作物主要根系活动层内的土壤水分状况。
Through analysing the yield, grass-layer structure, root system of the plant, many suitable characteristics were identified for its use in grazing pasture.
通过对草地早熟禾的产量、草层结构及根系结构进行分析，表明了几乎在所有观测宜牧性状中，草地早熟禾均表现为良好的适宜特征。
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