Arid Zone Research ›› 2020, Vol. 37 ›› Issue (1): 126-133.

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Effect of Irrigation Water Optimization on Greenhouse Grape Yield and Soil Biological Properties

LIN Bao-jun1, ZHANG Rui1, DONG Bo2, WANG Yin-di1, ZHANG Xiao-yan1   

  1. 1. College of Water Resources and Hydropower Engineering,Gansu Agricultural University,Lanzhou 730070,Gansu,China;
    2. Gansu Province Academy of Agricultural Sciences,Lanzhou 730070,Gansu,China

  • Received:2019-04-09 Revised:2019-06-24 Online:2020-01-15 Published:2020-01-15

Abstract: In order to reveal the response relationship between grape production and soil properties under drip irrigation with different irrigation water control levels, a field experiment on irrigation water regulation at different growth stages of grape was carried out at the grape experimental base in Yongdeng County, Gansu Province. The purpose of the study was to analyze the effect of irrigation water regulation on soil properties and grape yield. The parameters including the soil accumulation temperature, invertase and amylase activity, organic carbon content (TOC), microbial biomass carbon (MBC) and microbial entropy (qMB) were used in the study. The results showed that the soil accumulated temperature, soil enzymes, TOC, MBC and qMB under drought stress in the new shoot period were significantly higher than those under irrigation water control (P<0.05). The drought stress in the new shoot period was increased by 44.6% compared with that under irrigation water control. The fruit expansion period was the key stage of grape growth, so during this period, the effect of drought stress on soil amylase was not significant, but there was a certain inhibition on other soil indicators, and the grape yield could be reduced by 9.7%. The comprehensive analysis on the membership function showed that the soil biological index and the comprehensive subordinates of grape yield were ranked as PS > FS > CS > CK > ES.

Key words: water stress, grape; yield, soil biological property, Yongdeng County, Gansu Province