Soil microbial biomass carbon in the tea plant root layer increased significantly with the age of tea plants.
茶树根层土壤微生物生物量碳随树龄增长而增加，但与茶树根层土壤可培养微生物总量无显著相关。
In order to absorb water, the speed of root elongation in plants must surpass the speed of the humid soil layer moving down.
为了能够有效地从沙层中获得水分，植物的根系的伸长的速度必须大于湿沙层下降的速度。
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。
应用推荐