Optimizing drip fertigation management based on yield, quality, water and fertilizer use efficiency of wine grape in North China

• DOI: 10.1016/j.agwat.2023.108188
• Publication Date: 2023-02-10T15:32:01Z
• Authors: Weihua Han; Jiaxing Sun; Kui Zhang; Lili Mao; Lili Gao; Xuemin Hou; Ningbo Cui; Wenhuai Kang; Daozhi Gong
• Keywords: Fertigation; Titratable acid; Water Use Efficiency; Irrigation scheduling; Wine grape; Vineyard

Drip fertigation is an advanced technology combining micro-irrigation with fertilization, which conducive to deliver water and nutrients crops or fruit trees synchronously. To optimize drip scheduling for wine grape in North China, a three-year field experiment was conducted study the effects of irrigation fertilization quota on yield, berry quality, use efficiency (WUE) partial factor productivity fertilizer (PFPF). Nine treatments were set up based combinations three levels rates. The 100 % (IH), 80 (IM) 60 (IL) designed quota, i.e., 25, 20 15 mm per event. rates (FH), (FM) (FL) compound water-soluble amount locally recommended, 630, 504 378 kg ha−1 yr−1. Both had significant effect yield. Irrigation also significantly affected titratable acid sugar-acid ratio. Averaged across years rates, compared IH treatment, IM treatment decreased by 3.3 increased ratio 12.2 %; IL 10.7 20.0 %. FM presented richest anthocyanins condensed tannins among IWUE decrease amounts; WUE PFPF reached maximum treatment. but not beneficial WUE. Interaction between only PFPF. Assessed gray relational analysis (GRA), technique order preference similarity ideal solution (TOPSIS) combinational evaluation method (CEM), value (Qi) IMFM (moderate fertilizer, event combined yr−1 fertilizer) highest whole, indicating that optimal could balance quality water-fertilizer efficiency. These results may provide benchmark cultivation under China other regions similar environmental conditions.