灌溉水质及土壤初始含盐量对作物出苗的影响

Effects of Saline Water and Soil Salinity on Crop Emergence

为了研究灌溉水及土壤中含盐量对作物出苗情况的影响,采用盆栽的方式,选取了几种耐盐性不同的作物和牧草,对微咸水灌溉与土壤初始含盐量对作物的出苗率及出苗时间的影响展开研究。结果表明:随着灌溉水矿化度和土壤初始含盐量的增大,作物的出苗率逐渐减小,出苗时间逐渐变长;土壤初始含盐量和由灌溉水带入土壤中的盐分数量相当时,灌溉水矿化度对作物出苗率和出苗时间的影响都大于土壤初始含盐量对其的影响,且作物耐盐性越强,这种差别越明显。灌溉水中的含盐量对作物的影响要大于土壤中的含盐量,因此,对于矿化度较高的微咸水资源,不可以用于灌溉,但可以用于盐碱地淋洗盐分。

In order to study the effect of saline water irrigation and soil salinity on crop emergence cases, potted way has been used, and several different salt tolerance of crops and pasture has been selected in this paper. The results show that： with the increase of irrigation water salinity and initial soil salinity, crop emergence rate decreased, emergence time gradually became longer; quite the amount of salt in the soil and irrigation water, irrigation water effects on crop emergence rate and emergence times greater than the impact of initial soil salinity, and the stronger the salt tolerance of crops, this difference is more obvious. Therefore, higher salinity water resources, can not be used for irrigation, but can be used for salt leaching of saline soil.