摘要
【目的】探究灌溉水质、蔬菜产量及土壤盐分离子间的相互关系。【方法】设置E1(3.6 dS/m井水)、E2(1.96 dS/m井水)、E3(0.31 dS/m雨水)共3个处理,研究不同处理对蔬菜产量、土壤电导率(EC)、土壤盐分离子的影响。【结果】E3处理番茄和上海青产量最高,比E2、E1处理番茄产量显著高30.9%、138.8%,比E2、E1处理上海青产量著高431.4%、2100%。0~60cm土层内,土壤EC值随灌溉水电导率的增加而增加,其中E3处理0~20 cm土层土壤EC值为833μS/cm,E2、E1处理较E3处理分别增加40.9%和211.2%。土壤EC值与盐分离子Na^(+)、K^(+)、Ca^(2+)、Mg^(2+)、Cl^(-)、SO_(4)^(2-)均极显著正相关(P<0.01),与HCO3-极显著负相关,其中Ca^(2+)、Mg^(2+)、Cl^(-)、SO_(4)^(2-)对土壤EC值的影响最大。【结论】在设施栽培下,1.96~3.6dS/m灌溉水降低了番茄和上海青产量,提高了土壤EC值和盐分离子(Na^(+)、K^(+)、Ca^(2+)、Mg^(2+)、Cl^(-)、SO_(4)^(2-))量,3.6 dS/m灌溉水严重降低了蔬菜产量。
【Background】The shortage of water resources has become a restrictive factor in agricultural production,especially in arid and semi-arid areas.The rational utilization of brackish water can alleviate the shortage of water resources.【Objective】In order to explore the relationship among irrigation water quality,vegetable yield and soil salt ions,【Method】Tomato and chinese cabbage were irrigated with E1(3.6 dS/m well water),E2(1.96 dS/m well water)and E3(0.31 dS/m rain water)in 2018 and 2019,the effects of different treatments on vegetable yield,soil electrical conductivity and soil salt ions were studied.【Result】The results showed that the yield of tomato and chinese cabbage in E3 treatment was the highest,which was 30.9%and 138.8%higher than that of E2 and E1 treatment,and 431.4%and 2100%higher than that of E2 and E1 treatment,respectively.In the 0~60 cm soil layer,the soil conductivity increased with the increase of irrigation water conductivity.Among them,the soil conductivity of 0~20 cm in E3 treatment was 833μS/cm.The E2 and E1 treatment increased by 40.9%and 211.2%respectively compared with E3 treatment,and the E1 treatment reached a significant level.The EC Value of soil conductivity showed a very significant positive correlation with soil salt ions Na^(+),K^(+),Ca^(2+),Mg^(2+),Cl^(-)and SO_(4)^(2-)(P<0.01),and a very significant negative correlation with HCO3-,among which Ca^(2+),Mg^(2+),Cl^(-),SO_(4)^(2-)had the greatest impact on the EC Value of soil.【Conclusion】Under protected cultivation,the irrigation water with conductivity of 1.96~3.6 dS/m reduces the yield of tomato and chinese cabbage compared with rainwater,and improves the content of soil conductivity and salt ions(Na^(+),K^(+),Ca^(2+),Mg^(2+),Cl^(-)and SO_(4)^(2-)).The irrigation water with conductivity of 3.6 dS/m seriously reduces the yield of vegetables.Therefore,we should pay attention to the quality of irrigation water when planting vegetables.
作者
蒋丽媛
赵伟
杨圆圆
陈金丽
杨兆森
刘刚
陈志杰
JIANG Liyuan;ZHAO Wei;YANG Yuanyuan;CHEN Jinli;YANG Zhaosen;LIU Gang;CHEN Zhijie(Weinan City Agricultural Technology Promotion Center,Weinan 714000,China;Bio-Agriculture Institute of Shaanxi,Xi’an 710043,China)
出处
《灌溉排水学报》
CAS
CSCD
北大核心
2022年第S02期17-21,共5页
Journal of Irrigation and Drainage
基金
陕西省科技厅创新人才推进计划-青年科技新星项目(2020KJXX-014)
渭南市首批“特支计划”人才培育工程项目
关键词
灌溉水质
微咸水
产量
土壤电导率
土壤盐分离子
irrigation water quality
brackish water
yield
soil conductivity
soil salt ions
作者简介
蒋丽媛(1992-),女,陕西渭南人。农艺师,主要从事蔬菜栽培研究。E-mail:759246338@qq.com;通信作者:赵伟(1984-),女,河北晋州人。高级农艺师,博士,主要从事植物营养与调控及水肥一体化研究。E-mail:wei123278@163.com
