Journal of Nuclear Agricultural Sciences ›› 2021, Vol. 35 ›› Issue (10): 2431-2439.DOI: 10.11869/j.issn.100-8551.2021.10.2431

• Isotope Tracer Technique·Ecology and Environment·Physiology • Previous Articles    

Research on the Effects of Water and Fertilizer Coupling on the Yield and Quality of Drip Irrigation Grapes in Extremely Arid Regions

WEN Yue(), WANG Zhenhua*(), LI Wenhao, DING Hongwei   

  1. College of Water Resources and Architectural Engineering, Shihezi University/Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production & Construction Group, Shihezi, Xinjiang 832000
  • Received:2020-08-19 Accepted:2020-10-27 Online:2021-10-10 Published:2021-08-04
  • Contact: WANG Zhenhua

极端干旱区水肥耦合对滴灌葡萄产量和品质的影响研究

温越(), 王振华*(), 李文昊, 丁宏伟   

  1. 石河子大学水利建筑工程学院/现代节水灌溉兵团重点实验室,新疆 石河子 832000
  • 通讯作者: 王振华
  • 作者简介:温越,男,主要从事节水灌溉理论研究。E-mail: 17699534686@163.com
  • 基金资助:
    兵团重大科技项目(2021AA003);兵团节水灌溉试验计划项目(BTJSSY-201905);兵团科技创新团队项目(2019CB004)

Abstract:

In order to establish a coupling evaluation model of physiology-yield-quality effects to drip irrigation grapes in extremely arid regions, four irrigation treatments of Regulated Deficit Irrigation (RDI) of shoot growth stage, flowering stage, berry growth stage and mature stage, one full irrigation (denoted W1, W2, W3, W4 and CK respectively), and 3 fertilization treatments of N:P2O5:K2O=1:1:1, 2:2:3, 2:1:2 (denoted as F1, F2 and F3 respectively) were carried out in a complete combination design. And then, the physiology, yield and quality indicators of grapes were analyzed, and the membership function and cluster analysis were used to select the best water and fertilizer treatment. The results showed that water and fertilizer treatments had significant effects on the relative moisture content of leaves in different growth periods of drip irrigation grapes. W1F2 could maintain a high level during the main period of fruit growth; improper use of water and fertilizer would seriously reduce the yield and quality of grapes. The yield of CKF2 was the highest, with a value of 28 003 kg·hm-2, and W4F2 had no significant difference with CKF2, while W3F3 was 34.29% lower than CKF2; W4F2 had the highest content of reducing sugars, soluble solids and vitamin C, and W3F3 had the highest titratable acid content. Correlation analysis showed that there was a significant correlation among the physiology, yield and quality indexes of drip irrigation grapes. Through the combination of membership function and cluster analysis, fifteen water and fertilizer treatments could be divided into five levels, of which two optimal water and fertilizer treatments were regulated deficit irrigation in the shoot growth period and the berry mature period, and used the fertilization ratio of N-P2O5-K2O=235.7 kg·hm-2-235.7 kg·hm-2-353.6 kg·hm-2. This study can provide theoretical guidance for the coupling evaluation of water and fertilizer effects of drip irrigation on grapes in extremely arid regions.

Key words: drip irrigation grape, yield and quality, membership function, cluster analysis

摘要:

为建立极端干旱区滴灌葡萄生理-产量-品质效应的耦合评价模型,本试验设置新梢生长期、花期、浆果生长期、浆果成熟期4个生育期调亏灌溉和1个充分灌溉(分别记为W1、W2、W3、W4、CK),并与N:P2O5:K2O=1:1:1、2:2:3、2:1:2(分别记为F1、F2、F3)3个施肥配比进行完全组合设计,对葡萄生理、产量和品质指标进行分析,然后采用隶属函数和聚类分析法择优水肥处理。结果表明,水肥处理对滴灌葡萄不同生育期叶片的相对含水率影响显著,W1F2可以在果实生长的主要时期保持较高水平;水肥使用不当会严重降低葡萄产量和品质,CKF2的产量最高,为28 003 kg·hm-2,W4F2与之无显著差异,而W3F3较其降低34.29%;W4F2的还原性糖、可溶性固形物和维生素C含量最高,W3F3的可滴定酸含量最高。相关性分析表明,滴灌葡萄生理、产量和品质指标间均呈显著性相关关系。经隶属函数和聚类分析法结合得出,15个水肥处理可分为5个等级,其中2个最优水肥处理分别为在新梢生长期和浆果成熟期进行调亏灌溉,并采用N-P2O5-K2O=235.7 kg·hm-2-235.7 kg·hm-2-353.6 kg·hm-2的施肥配比。本研究为极端干旱区滴灌葡萄水肥效应耦合评价提供了理论指导。

关键词: 滴灌葡萄, 产量品质, 隶属函数, 聚类分析