| 1. | Laboratory experiment study on the effects of water quality and emitter discharge on wetted soil geometry and volume
水质及流量对盐碱土滴灌湿润锋运移影响的室内试验研究 |
| 2. | Based on the approximate estimation of wetted front edge of one dimension soil column , the design parameters of sdi were determined primarily
粘壤土湿润锋运移速度明显慢于沙土，特别是容重较大时更为明显。 |
| 3. | The results indicated that the higher the salinity of infiltration water was , the faster cumulative infiltration and wetting front increased , and more salt accumulated at the wetting front
入渗水的矿化度越高，土壤剖面含盐量越高，且湿润锋附近积聚的盐分越多。 |
| 4. | The wetting front moved nearly parallel to the soil surface , and its length could be described by a power function of time , when the distribution of initial soil water was uniform
当初始含水量分布均匀时，降雨入渗过程中湿润锋面几乎平行坡面运移，湿润锋深度与时间的关系可用幂函数描述。 |
| 5. | And compared to the vertical wetting front , the rate of horizontal wetting front was 1 . 22 times higher . different models were used to fit the movement of wetting front , it is found that the polynomial function was a good model
粘质(土娄)土，由于质地细小，在滴灌速率为2 . 67l h时，湿润锋径向移动速率远大于垂向移动速率，前者是后者的1 . 22倍。 |
| 6. | According to the basic equation for water flow in subgrade soil , based on the basic soil properties of compacted loess , the redistribution of soil moisture and the soil water - migrate parameters are studied
摘要基于黄土路基压实后土体的基本性质，根据路基土中水分运动的基本方程，通过室内一维土柱入渗试验，得到不同压实度的黄土湿润锋湿度与平均湿度、水分入渗速率的关系曲线。 |
| 7. | The results showed that the lower initial soil moisture content was , the less infiltration occurred and wetting front moved slowly , and soil salt were leached more efficiently . at the same time , salt reduced in the top soil and salt accumulated at the wetting front
通过对土壤初始含水量下土壤水盐运移规律室内模拟试验研究，发现随着土壤初始含水量的增加，相同入渗历时内的累积入渗量和湿润锋都在增加。 |
| 8. | The experimental device of soil moisture movement of multi water storage pit is developed , which can measure the infiltration of moisture and the movement of moisture frontal directly . distribution of soil water content in all soil section are measured with y ray apparatus . 3
利用该装置进行室内的蓄水多坑灌水试验，直接对水分的入渗过程和湿润锋变化进行观测，并通过y射线仪装置测量整个土体剖面上含水率的分布状况。 |
| 9. | Under subsurface drip irrigation , soil wetted front movement when higher soil initial moisture content was quicker than that of when it is lower , so did the supplied water pressure and soil bulk density . the wetted front movement of clay loam was clearly slow than that of sandy soil , especially in the larger soil bulk density
地下滴灌条件下，初始含水量较高的土柱，湿润锋运移速度快于含水量较低的；在较高的供水压力条件下，各个方向的湿润锋运移都比低水头情况下的快；容重越大的土柱湿润锋运移速度越缓慢。 |
| 10. | We also use polynomial function to model the soil moisture under drip irrigation ; and the function will be useful for design the drip irrigation system and fertigation system . ( 2 ) the amount water added and the way of supplying water and fertilizer were two key important factors to affect the movement , transformation , and leach of urea - n in soil
比较了不同模型拟合的滴灌条件下土壤湿润锋的动态变化，认为多项式模型的拟合程度较好；同时建立了土壤湿润体水分含量( y )与径向距离( l ) 、垂向距离( h ) 、实验时间( t )之间的经验关系式。 |
