降水情况 meaning in Chinese

precipitation regime

Introduce the climate and precipitation in hei long jiang
简介黑龙江省气温及降水情况？
The study was primarily conducted to investigate the effects of various irrigation managements on the yield , quality and wue of alfalfa and the sustainable utilization of soil - water in north china plain . five treatments were applied : 0mm , 30mm , 50mm , 75mm and 100mm irrigating at the beginning of the second growth cycle in 2001
本研究通过两年的灌溉实验，根据对降水情况、土壤水分的蒸发量、蒸散量与苜蓿各生物学指标的分析，初步探讨了在华北平原地区不同灌溉处理对于苜蓿产量、品质、水分利用率以及苜蓿地土壤水资源利用可持续性的关系。