Effects of Different Irrigation Amounts on Water Consumption and Water Use Efficiency of Dripirrigated Celery  

滴灌条件下不同灌溉量对芹菜耗水量和水分利用效率的影响（英文）

作　　者：杨军[1] 廉晓娟[1] 王艳[1] 张余良[1] 王正祥[1] 

机构地区：[1]天津市农业资源与环境研究所,天津300192

出　　处：《Agricultural Science & Technology》2016年第9期2090-2095,共6页农业科学与技术（英文版）

基　　金：Supported by Special Fund for Agro-scientific Research in the Public Interest of China(201303133-3);Tianjin Science and Technology Plan Project(14ZCDGNC00108);Agricultural Science and Technology Achievements Transformation and Extension Project of Tianjin City(201203030)~~

摘　　要：This study aimed to investigate the effects of different irrigation amounts on water consumption and water use efficiency of celery under the condition of drip irrigation, so as to provide a scientific basis for high-yielding, high-quality and highefficiency cultivation and water-saving irrigation of greenhouse celery. Total five irrigation amounts were designed, 117.5 （T1）, 160.0 （T2）, 202.5 （T3）, 245.0 （T4） and 287.5 （CK） mm/hm2, and the effects of different irrigation amounts on yield, water consumption and water use efficiency of celery were studied by plot experiment. The results showed that at the soil depth of 0-40 cm, the soil water storages of different treatments ranked as T3＇s〉T4＇s〉CK＇s〉T2＇s〉T1＇s, and the celery water consumptions ranked as CK＇s〉T4＇s〉T3＇s〉T2＇s〉T1＇s. At the same time, the soil water storage in different treatment group declined with the growth of celery, and finally increased at the harvest period. Among different irrigation amounts, the water use effi- ciency and irrigation water use efficiency all ranked as T1＇s〉T2＇s〉T3＇s〉T4＇s〉CK＇s. The water consumption of celery was positively related to irrigation amount （P〈 0.01）, and was negatively related to water use efficiency （P〈0.01） and irrigation water use efficiency （P〈0.05）. When the irrigation amount was below 253 mm/hm2, the celery yield was positively related to irrigation amount （P〈0.01）. There was also a positive correlation between celery output and irrigation amount. Compared with those of CK, the benefit of the T4 treatment group was equal, and the water consumption was reduced by 14.78%. In high-efficiency solar greenhouse, the irrigation amount of drip-irrigated celery is recommended as 245 mm/hm2.为揭示滴灌条件下不同灌溉量对芹菜耗水量和水分利用效率的影响,以期为温室芹菜高产、优质、高效栽培及节水灌溉提供科学依据,设置5个灌溉量处理(T_1:117.5 mm/hm^2 ;T_2:160.0 mm/hm^2 ;T_3:302.5 mm/hm^2 ;T_4:245.0mm/hm^2 ;Control(CK):287.5 mm/hm^2),进行温室内小区试验,分析不同灌溉量对芹菜产量、耗水量和水分利用效率的影响。结果表明,不同灌溉量处理0-40 cm深土壤贮水量和芹菜耗水量分别呈T_3>T_4>CK>T_2>T_1和CK>T_4>T_3>T_2>T_1的趋势;同时各处理土壤贮水量变化呈随芹菜栽培时间延长而下降、收获期又回升的趋势。不同灌溉量处理水分利用效率和灌溉水利用效率均呈T_1>T_2>T_3>T_4>CK的趋势。耗水量与灌溉量间达到0.01显著正相关水平,与水分利用效率、灌溉水利用效率间分别达到0.01和0.05显著负相关水平。灌水量小于253 mm/hm^2 时,芹菜产量与灌溉量间呈极显著正相关关系。芹菜产值与灌水量也成正比关系,T_4处理收益与对照持平,同时还可节水14.78%。建议高效日光温室芹菜滴灌栽培灌溉水定额为245mm/hm^2 。

关 键 词：Drip irrigation CELERY Irrigation amount Water consumption Water use efficiency 

分 类 号：S636.3[农业科学—蔬菜学]