生活污水再生水灌溉对生菜生长发育的影响  

Effect of Domestic Reclaimed Water Irrigation on Lettuce Growth

作　　者：荣嘉欣 范春辉 沈建辛 潘思祺 Rong Jiaxin;Fan Chunhui;Shen Jianxin;Pan Siqi(Shenyang Normal University,Shenyang 110034,China)

机构地区：[1]沈阳师范大学,辽宁沈阳110034

出　　处：《廊坊师范学院学报（自然科学版）》2024年第4期63-67,共5页Journal of Langfang Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(21407103)。

摘　　要：以生活污水再生水为灌溉水源,对比其与地表水(单独或混合)灌溉对生菜生长的影响,初步讨论生活污水再生水农灌回用的可行性。结果表明:再生水与地表水混灌(1∶1)对生菜叶片数量、株高具有积极作用,但差异不显著;混灌过程显著提高生菜地上与地下部的鲜重和干重,其中地上部鲜重较再生水、地表水单独灌溉分别增加了23.23%和59.43%。此外,混灌显著增加了生菜可溶性糖和可溶性蛋白质含量;再生水灌溉(单独或混灌)虽会增加生菜硝酸盐含量,但均符合国家规定的叶菜类蔬菜中硝酸盐含量限值。总体来看,再生水与地表水混灌对生菜增产效果最为显著,初步证实了灌溉过程的有效性和可行性。Reclaimed water is an effective measure to alleviate the contradiction between supply and demand of water resources,and has become an important water source of agricultural irrigation.Taking domestic reclaimed water as the irrigation water source,the paper compares the effects of its irrigation on the growth of lettuce with those of surface water(single or two kinds of water mixed),and discusses the feasibility of agricultural irrigation reuse of domestic reclaimed water.The results show that the mixed irrigation(1:1)of reclaimed water and surface water has a positive effect on the leave number and plant height of lettuce,but the discrepancy is not remarkable.The mixed irrigation process significantly increases the fresh and dry weights of the above-ground and underground parts of lettuce,and the fresh and dry weights of the above-ground part increases by 23.23%and 59.43%respectively compared with the irrigation with reclaimed water or surface water.In addition,the mixed irrigation may greatly increase the contents of soluble sugar and soluble protein in lettuce.Irrigation with reclaimed water(single or mixed)can increase the nitrate content in lettuce,but it still meets the nitrate content limits stipulated by the State in leafy vegetables.Overall,the mixed irrigation of reclaimed water and surface water has the most significant effect on increasing the yield of lettuce,basically confirming the effectiveness and feasibility of the irrigation process.

关 键 词：生活污水再生水 生菜 农业灌溉 生长发育 

分 类 号：X171.5[环境科学与工程—环境科学]