河南农业科学2025，Vol.54Issue(5)：10-22,13.DOI:10.15933/j.cnki.1004-3268.2025.05.002
保水剂施用深度和施用量对玉米光合特性、产量和水分利用效率的影响
Effects of Different Application Depth and Application Amount of Water Retaining Agent on Photosynthetic Characteristics,Yield and Water Use Efficiency of Maize
摘要
Abstract
In order to screen the suitable application depth and application amount of water retaining agent for maize cultivation,with maize as material and the treatment without water retaining agent as control(CK),the effects of water retaining agent application depth[20 cm(D1)and 10 cm(D2)]and application amount[150 kg/ha(T1),210 kg/ha(T2),270 kg/ha(T3)and 330 kg/ha(T4)]on maize growth,photosynthetic characteristics,yield and water use efficiency were studied.The results showed that,for different water retaining agent application depth treatments,the plant height,leaf SPAD value,net photosynthetic rate(Pn),stomatal conductance(Gs),transpiration rate(Tr),ear length,ear diameter,row number per ear,grain number per row,1 000-grain weight,yield,water use efficiency(WUE)and irrigation water use efficiency(IWUE)of D2 treatment were significantly higher than those of D1 treatment and CK,among which yield,WUE and IWUE increased by 31.64%,31.20%and 31.58%compared with CK,respectively.Under D1 condition,the plant height,stem diameter,leaf length,leaf width,number of leaves,SPAD value,Pn,Gs,Tr,yield,WUE and IWUE all increased with the increase of application amount of water retaining agent,T4 treatment was the highest,and Ci gradually decreased;Under D2 condition,the plant height,stem diameter,leaf length,leaf width,number of leaves,SPAD value,Pn,Gs,Tr,yield,WUE and IWUE all increased firstly and then decreased with the increase of application amount of water retaining agent,T3 treatment was the highest,and Ci decreased firstly and then increased.For different treatment combinations,D2T3 treatment had the highest Pn,Gs,Tr,yield,WUE,IWUE and the lowest Ci,among which yield,WUE and IWUE significantly increased by 42.37%,41.88%and 42.46%compared with CK,followed by D2T4 treatment.By comprehensive consideration,the suitable application depth of water retaining agent for maize was 10 cm,and the suitable application amount was 270 kg/ha.关键词
玉米/保水剂/施用深度/施用量/光合特性/产量/水分利用效率Key words
Maize/Water retaining agent/Application depth/Application amount/Photosynthetic characteristics/yield/Water use efficiency分类
农业科技引用本文复制引用
李华,陈亮,杜雷超,刘斌,张生银,张景辉..保水剂施用深度和施用量对玉米光合特性、产量和水分利用效率的影响[J].河南农业科学,2025,54(5):10-22,13.基金项目
甘肃省青年科技基金项目(23JRRD0001) （23JRRD0001）
甘肃省水利科学试验研究与推广计划项目(23GSLK040) （23GSLK040）
甘肃省科技计划项目(18JR2TA008) （18JR2TA008）
