Double-root-grafting enhances irrigation water efficiency and reduces the adverse effects of saline water on tomato yields under alternate partial root-zone irrigation

被引：7
|
作者：
Li, Wenjia [1 ]
Gao, Yanming [2 ]
Tian, Yongqiang [2 ,3 ]
Li, Jianshe [2 ,4 ,5 ]
机构：
[1] Ningxia Univ, Sch Civil & Hydraul Engn, Helanshan Xilu 489, Yinchuan 750021, Ningxia, Peoples R China
[2] Ningxia Univ, Coll Agr, Helanshan Xilu 489, Yinchuan 750021, Ningxia, Peoples R China
[3] China Agr Univ, Coll Hort, Yuanmingyuan West Rd 2, Beijing 100193, Peoples R China
[4] Ningxia Univ, Ningxia Engn Technol Res Ctr Modern Protected Hor, Yinchuan 750021, Ningxia, Peoples R China
[5] Ningxia Univ, Engn Res Ctr Efficient Utilizat Modern Agr Water, Minist Educ, Yinchuan 750021, Ningxia, Peoples R China
来源：
AGRICULTURAL WATER MANAGEMENT | 2022年 / 264卷
关键词：
Freshwater shortage; Water-saving irrigation; Low-quality water; Grafted plants; Tomato yields; SALT TOLERANCE; NUTRIENT-UPTAKE; RESPONSES; DEFICIT; GROWTH; NA+; CUCUMBER; COMPOST; QUALITY; STRESS;
D O I：
10.1016/j.agwat.2022.107488
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Since most world regions face freshwater (FW) shortages, water-saving irrigation and irrigation with saline water (SW) are currently two inevitable agricultural practices for crop production. However, these two practices generally have adverse effects on crop yields. In this study, we investigated the effects of double-root-grafting (DRG) on plant growth, crop yields, tomato quality and root-zone properties under alternate partial root-zone irrigation (APRI) with FW or SW. Self-rooting (SR), DRG, conventional irrigation (CI), APRI, FW and SW were considered in the experimental design to create treatments that included (i) SR-CI-FW, (ii) SR-APRI-FW, (iii) DRG-APRI-FW, (iv) SR-APRI-SW and (v) DRG-APRI-SW. The DRG used here is a 'tongue approach grafting' method in which grafted plants retain both rootstock (eggplant) root and scion (tomato) root in order to maximize the effectiveness of grafting under abiotic stress. The tested salinity level was 3.51 mS cm(-1) which had exceeded the threshold salinity of tomato (2.50 mS cm(-1)). In general, APRI application increased water pro-ductivity by 22.2-35.6%, but decreased fruit yields by 9.1-18.8% in SR plants (SR-APRI-FW vs. SR-CI-FW). However, under APRI conditions, DRG plants showed higher rate of plant growth and less salinity damage as compared to SR plants. Application of DRG significantly (P < 0.05) increased tomato fruit yields by 7.9-17.2% under standard conditions (DRG-APRI-FW vs. SR-APRI-FW) and by 14.2-27.4% under salinity conditions (DRG-APRI-SW vs. SR-APRI-SW). Taken together, double-root-grafting enhanced irrigation water efficiency and reduced the adverse effects of saline water on tomato yields under alternate partial root-zone irrigation.
引用
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页数：11
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