干旱地区农业研究2016，Vol.34Issue(6)：123-129,155,8.DOI:10.7606/j.issn.1000-7601.2016.06.19
基于Jensen模型的压砂地西瓜灌溉制度优化研究
Research on the optimal irrigation schedule of watermelon in gravel mulch field based on Jensen model
摘要
Abstract
The paper aimed at the problem of rational irrigation schedules and high efficiency utilization of water resources for watermelon in gravel mulch field,adopted the test pits contrast method in 2008 and 2009,using the water production function as Jensen model,analyzed the water consumption rule,key water requirement period and optimized the irrigation schedules by using Jensen model for watermelon in gravel mulch field.The results showed that:(1) The water consumtion in whole growth period of watermelon in gravel mulch field was 79.6 to 409.9 mm.(2) The order of key water demand period for watermelon was' seedling stage ＞ flowering and fruit setting stage ＞ expand initial stage ＞ expand middle stage ＞ stretch tendril stage ＞ expand late stage'.(3) The water sensitive index for each growth stage were:λ1 =0.6171,λ2=0.2707,λ3=0.0355,λ4=0.1097,λ5=0.1390 and λ6=0.1106.(4)Through the optimal irrigation schedule fotnd:the yield increasing effect was the most obvious when the irrigation supply was 80 to 240 rmm;The high yield can be obtained when the irrigation supply reached 320 mm.The optimal irrigation schedule were:20 to 30 mm in seedling stage,50 to 55 mm in vine-extending stage,40 to 45 mm in flowering and fruit setting stage,70 mm in expand initial stage,60 to 70 mm in expand interim stage,60 to 65 mm in expand late stage.关键词
西瓜/压砂地/灌溉制度/Jensen模型Key words
watermelon/gravel mulch field/irrigation schedules/Jensen model分类
农业科技引用本文复制引用
马波,田军仓..基于Jensen模型的压砂地西瓜灌溉制度优化研究[J].干旱地区农业研究,2016,34(6):123-129,155,8.基金项目
教育部2010年度“长江学者和创新团队发展计划”创新团队(IRT1067) （IRT1067）
