中文摘要：

为了分析不同矿化度微咸水滴灌对土壤水盐分布及西葫芦生长的影响,进行了西葫芦不同灌溉水矿化度条件下微咸水膜下滴灌温室种植试验,试验设3个矿化度水平,分别为1.7、3.5和5.1 g/L。试验结果表明：采用不同矿化度微咸水滴灌后土壤水分分布区域不同,在二维空间内大致呈半椭圆状,且矿化度越高,区域越窄深,矿化度越低,区域越宽浅;生育期结束后,各处理0~20 cm土层土壤电导率均低于土壤初始电导率,1.7 g/L处理的积盐区主要集中在20~30 cm土层,3.5 g/L处理和5.1 g/L的积盐区主要集中在30~40 cm土层,说明盐分被淋洗至湿润锋附近,且灌溉水矿化度越高,该土层土壤的电导率越大;随着灌溉水矿化度的增大,西葫芦的出苗率降低,出苗时间延长,西葫芦的叶面积指数和产量也会受到一定程度的抑制作用。

英文摘要：

In order to reveal the effect of brackish water with different salinity on the distribution of moisture content and salinity in the soil and the growth characteristics of summer squash, the greenhouse cultivation experiment was conducted. The moisture content and salinity in soil, the emergence rate, the leaf area index, and the yield were observed regularly. The results showed that： the distribution of moisture content and salinity were significant under different salinity treatment; a high salinity equated to a narrow distribution on radial direction and a deep distribution on vertical direction ; the three treatments showed a similar result that the salinity would accumulate in the depth of 0 ~ 20 cm and desalinize in the depth of 20-40 cm; the main area of salinity accumulation was 20-30 cm under the treatment of 1.7 g/L, while the result was 30-40 cm under the other two treatments. The soil electrical conductivity under different treatments followed a descending order of 1.7, 3.5, 5.1 g/L; the increase of salinity would devote the decrease of emergence rate and the extension of emergence time, it would also had an inhibiting effect on the leaf area index and yield.