景电灌区保水剂施用量对甜瓜产量及水分利用效率的影响  

Effects of Different Water-holding Agent Application Rates on the Yield and Water Use Efficiency of Melons in Jingdian Irrigation Area

作　　者：高秋燕 陈亮 刘斌 GAO Qiuyan;CHEN Liang;LIU Bin(Gansu Jingtaichuang Irrigation Water Resources Utilization Centre,Jingtai Gansu 730400,China;Gansu Provincial Institute of Agricultural Engineering and Technology,Wuwei Gansu 733006,China;College of Horticultural,Gansu Agricultural University,Lanzhou Gansu 730070,China)

机构地区：[1]甘肃省景泰川电力提灌水资源利用中心,甘肃景泰730400 [2]甘肃省农业工程技术研究院,甘肃武威733006 [3]甘肃农业大学园艺学院,甘肃兰州730070

出　　处：《寒旱农业科学》2025年第4期326-330,共5页Journal of Cold-Arid Agricultural Sciences

基　　金：甘肃省青年科技基金(23JRRD0001);甘肃省水利科学试验研究及技术推广计划项目(24GSLK025)。

摘　　要：探究保水剂对甜瓜生长发育和水分利用效率的调控效应,为科学施用和推广应用保水剂提供理论依据。在大田条件下,以甜瓜为试材、不施用保水剂为对照,研究了保水剂施用量60、75、90 kg/hm^(2)3个处理对甜瓜生长发育、产量和水分利用效率的影响。结果表明,施用保水剂较对照不施用保水剂显著促进了甜瓜各生育期蔓的伸长、茎的加粗和叶面积指数的增加。施用保水剂90 kg/hm^(2)处理的甜瓜各生育期的蔓长、茎粗均最高,叶面积指数显著高于其他处理,甜瓜产量、水分利用效率均最高,较不施用保水剂分别显著提高了11.1%、22.8%。综合考虑甜瓜植株生长发育、产量和水分利用效率,推广应用保水剂可以作为景电灌区抗旱节水的一种技术方案,以施用量为90 kg/hm^(2)时效果最佳。To investigate the regulatory effects of water-holding agents on the growth and development and water-use efficiency in melons so as to provide a theoretical basis for the scientific application and promotion of water-holding agents,the effect of 3 different water-holding agent application rates(60 kg/ha,75 kg/ha,and 90 kg/ha)on the growth,development,yield and water-use efficiency in melons were investigated under field conditions with melon as the test material and no water-holding agent as the control(CK).Results showed that the application of water-holding agent significantly promoted the elongation of vines,thickening of stems and the increase of leaf area index of melons at all fertility stages.The melon treated with 90 kg/ha of water conservator had the highest vine elongation,stem thickening and leaf area index at all fertility stages,and the highest melon yield and water utilization efficiency,which were 11.0%and 22.8%significantly higher than that of CK,respectively.Considering the growth and development of melon plants,yield and water utilization efficiency,promoting the application of water retaining agent can be a technical solution for drought and water conservation in Jingdian Irrigation District,and the optimum application rate of water retaining agent is 90 kg/ha.

关 键 词：景电灌区 保水剂 甜瓜 产量 水分利用效率 

分 类 号：S652[农业科学—果树学]