soil water suction

Regardless of preventing evaporation or not , soil water suction decreased firstly and then increased with the increase of soil depth , and soil water suction at the same depth increased with time .

无论在隔绝蒸发还是在自然蒸发条件下，短期内土壤水吸力有随土层深度的增加呈先下降后升高的趋势，而同一深度土层水吸力则随时间的推移而升高；

The results show that the uniformity of irrigation with PVC tube can meet the designed standard , using 15 kPa as irrigation pressure and 30 kPa soil water suction as the lower limit of irrigation .

结果表明，灌水时供水压力大于15kPa、控制灌水下限土壤水吸力设定为30kPa，该PVC管滴灌系统出水均匀度可达到既定标准。

The results of study demonstrated that : ( 1 ) In range of tensiometer measurement , there was a kind of obvious linear relationship between soil water suction and content of the yellow white soil ;

结果表明：（1）在张力计测定范围内，黄白土土壤水吸力与含水量之间表现出显著的线性相关。

The results indicated that the fertilizer application rate and the soil water suction related to the lower limit of irrigation affected the yield of tomato and fruit quality significantly , and the interaction of these two factors reached 1 % significant level .

结果表明，肥料施用数量和灌溉控制下限土壤水吸力值的大小对番茄的产量及其果实的品质影响显著，且两因素的交互作用也达到了1%的显著水平；

Soil water curve of C. intermedia grasslands of different density and its parameters inosculation : relation between soil water content and suction is power .

不同密度柠条草地土壤水分特征曲线和水分参数研究：土壤含水量和土壤吸力之间存在着幂函数关系。