浙江农业学报2025，Vol.37Issue(9)：1849-1859,11.DOI:10.3969/j.issn.1004-1524.20250037
水肥耦合对景电灌区膜下滴灌玉米产量及水肥利用效率的影响
Effects of water-fertilizer coupling regimes on maize yield and water and fertilizer use effi-ciency under mulched drip irrigation in Jingdian irrigation district of China
摘要
Abstract
The development of modern agricultural water-saving technology is an effective way to solve the water shortage and improve the efficiency of water resources in the arid regions of northwest China.In order to study the effect of water-fertilizer coupling of drip irrigation under sub-membrane drip irrigation on the growth and yield of maize in Jingdian irrigation area and to find out a suitable regime,a plot experiment was conducted.The local drip irrigation amount and fertilizer application rate were used as control(CK),and 3 soil water matric potentials[-10 kPa(W1),-20 kPa(W2),-30 kPa(W3)]and 3 fertilizer applicatin rates[85％(F1),75％(F2)and 65％(F3)of the control]were set.It was shown that W2F2 treatment exhibited the best performance under the ex-periment conditions.Under this treatment,the weight of aboveground dry matter of maize was significantly(p＜0.05)increased by 13.7％,9.0％than that of CK at the booting,filling period,respectively,the yield was 18.23 t·hm-2,and the economic income was 42 548 yuan·hm-2,which was 4.9％higher than that of CK.Besides,the water use efficiency and partial factor productivity of fertilizers under W2F2 treatment were increased by 12.5％and 36.3％,respectively,as compared with the CK,and W2F2 treatment had no significant adverse effect on soil salt content.Compared with the CK,W2F2 treatment could save water and fertilizer usage by 24.7％and 25.0％,re-spectively.Specifically,the water-fertilizer coupling regime of W2F2 treatment was as follows:8 times of irrigation during the whole growth period,irrigation quota of 2 880 m3·hm-2,and input of N 157.5 kg·hm-2,P2O5 82.5 kg·hm-2 and K2O 82.5 kg·hm-2 with a ratio of 20％,30％,30％,20％at seedling,jointing,booting and filling peri-od,respectively.关键词
膜下滴灌/水肥耦合/玉米/水分利用效率/肥料偏生产力Key words
mulched drip irrigation/water-fertilizer coupling/maize/water use efficiency/partial factor productivi-ty of fertilizer分类
农业科技引用本文复制引用
闫沛中,陈亮,张生银,刘斌..水肥耦合对景电灌区膜下滴灌玉米产量及水肥利用效率的影响[J].浙江农业学报,2025,37(9):1849-1859,11.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及技术推广计划项目(22GSLK023) （22GSLK023）
