不同矿化度微咸水灌溉对大白菜生长和土壤盐分累积的影响

Effect of Saline Water Irrigation on Chinese Cabbage Growth and Soil Salt Accumulation

为了合理开发和安全利用海河流域环渤海低平原区浅层地下微咸水,以秋茬大白菜为研究对象,2010、2011年在河北临西灌溉试验站用0.72g/L(深层淡水)、2g/L(咸淡混合水)、3g/L(咸淡混合水)、4.3g/L(浅层微咸水)的微咸水进行田间灌溉试验,探求其对大白菜的产量和品质以及土壤盐分动态的影响。试验结果表明:不同矿化度微咸水灌溉的大白菜的品质之间没有差异。2、3g/L微咸水与0.72g/L淡水灌溉的大白菜的产量没有差异,但4.3g/L浅层微咸水直接灌溉比淡水灌溉产量降低,2年平均减产率9.0%。土壤含盐量随着灌溉水矿化度的提高总体出现增加趋势。

For the sake of rational exploitation and safe utilization of the shallow layer underground saline water in the low plain around Bohai sea of Haihe River basin, a field experiment was conducted to investigate the effects of the different salinity water （0.72, 2, 3, 4. 3 g/L） irrigation on autumn Chinese cabbage yield and quality and soil salt accumulation in Hebei Linxi irrigation Ex- perimental station in 2010 and 2011. The results showed that there were no significant difference among the effects of all the treat- ments on Chinese cabbage quality, and the effects among the treatments with 0.72, 2, 3 g/L on Chinese cabbage yield. The yields of the 4. 3 g/L treatment were lower than that of 0. 72 g/L, and the 2-year average yield decreases by 9%. The soil salt content in- creased with the increase of the mineral content of saline water.