砾石地 meaning in Chinese

boulder pavement

( 2 ) experiment analysis of swr soil moisture sensor because of cropland information excessive , ca n ' t experiment everyone , penman process soil containing water or moisture data experiment to vegetable terras cropland and gravel , prevailed experiment data , and draw experiment curve drawing of differ soil
( 2 ) swr型土壤水分传感器的试验分析由于农田信息繁多，不能一一研究，故笔者只对菜地、田间、砾石地分别进行了土壤含水量试验，获取了试验数据，并绘出了不同土质的试验曲线图。