渗灌条件下保护地黄瓜不同生育期适宜灌水定额  

Optimal subirrigation quota for cucumber at different growth stages in protected field

作　　者：宋文[1] 张玉龙[1] 党秀丽[1] 王娇[1] 韩巍[1] 

机构地区：[1]沈阳农业大学土地与环境学院国家农业部东北土壤与环境重点开放实验室,辽宁沈阳110161

出　　处：《浙江农业学报》2010年第2期188-192,共5页Acta Agriculturae Zhejiangensis

基　　金：辽宁省重大农业攻关项目(2006215005)

摘　　要：采用保护地黄瓜栽培小区试验的方法,将黄瓜全生育期分为前期、后期两个阶段,按生育阶段控制上、下限对黄瓜进行组合灌溉,通过比较黄瓜产量和水分生产效率,探讨了用节点式渗灌灌溉温室栽培黄瓜灌水定额(灌溉湿润比)的适宜取值范围。结果表明:在砂质粘壤土上,当节点式渗灌管埋深为25cm、计划湿润层深15～40cm(厚度25cm)、灌水控制上限和下限分别定为土壤水吸力6kPa(田间持水量)和30kPa时,将计划湿润层湿润比设定为前期0.37～0.38(灌水定额54～56m3/hm2)、后期0.34～0.37(灌水定额50～55m3/hm2),并依此进行灌溉,具有较好的高产、优质、节水效果。The optimal irrigation quota of sectional subirrigation for cucumber in protected field was studied by measuring the yield and water use efficiency under different soil moisture ratios. The cucumber growth period was divided into,two stages as earlier stage and later stage, and the irrigation was based on the upper irrigation control limit and lower control limit for each growth period. The results showed as follows ： when the buried depth of subirrigation pipe was 25 cm, the planned wetting soil zone is 15 -40 cm（25 cm in depth）, the upper irrigation control limit and lower control limit were 6 kPa （soil water suction）and 30 kPa respectively, the optimal soil moisture ratio of planned wetting soil zone for earlier stage of cucumber was 0. 37 -0. 38 （irrigation quota was 54 -56 m^3· hm^-2） and later stage was 0. 34 -0. 37 （irrigation quota was 50 -55 m^3· hm^-2）for sandy clay loam, and at these wet ratios the yield and water use efficiency were optimalizing.

关 键 词：节点式渗灌 灌水定额 日光温室 黄瓜 

分 类 号：S642.2[农业科学—蔬菜学] S607[农业科学—园艺学]