供水吸力、保水材料对番茄生长和产量的影响  

Effects of Water Supply Tension and Water Conservation Materials on Yield and Water Use Efficiency of Greenhouse Potted Tomato

作　　者：张伟娟[1,2] 薛绪掌[1] 胡跃高[2] 李邵[1] 张敏[1] 陈菲[1] 

机构地区：[1]国家农业信息化工程技术研究中心,北京100097 [2]中国农业大学农学与生物技术学院,北京100193

出　　处：《灌溉排水学报》2010年第6期105-108,共4页Journal of Irrigation and Drainage

基　　金：国家863项目(2010AA10A301)

摘　　要：在温室条件下,采用负水头供水控水装置来持续稳定的控制土壤水分条件,采用裂区设计,研究了在供水吸力分别为4、7、10 kPa三种水分梯度下,2种保水材料(硅藻土、保水剂)对番茄产量与水分利用效率的影响。结果表明,随着供水吸力的增加,土壤质量含水率、光合速率、蒸腾速率、番茄的产量、干物质质量、植株耗水量均呈现出逐渐减小的趋势;在高土壤水分W1(4 kPa)条件下,保水剂(B3)的各项测定指标与其他处理的差异不大,但是在低土壤水分W2(7 kPa)、W3(10 kPa)或干旱的条件下,保水剂(B3)的土壤含水率、植株生长速率、光合速率、蒸腾速率、地上和地下部干物质质量、产量、耗水量、水分利用效率均显著低于CK(B1)和硅藻土(B2)。Under greenhouse conditions,a negative pressure water supplying and controlling pot devices was used in the experiment to control different soil water content by setting the water supply tension（WST） of the device at different value.A split plot experiment with three WST（3 kPa,7 kPa,10 kPa）and two water conservation materials（SAP,Diatomite）was carried out to study yield and water use efficiency（WUE） of tomato.The results indicated that soil water content and yield declined gradually with the increase in water supply tension.In higher soil water content（4 kPa） condition,index of every treatment had no significant difference between every treatment.However,in lower soil water content（7 kPa and 10 kPa） condition,the yield,plant growth rate,Pn,Tr,total water use,dry weight of aboveground and underground,WUE of B3（SAP） treatment were lower than other treatment.

关 键 词：番茄 负水头控水 产量 水分利用效率 保水剂 

分 类 号：S641.2[农业科学—蔬菜学]