ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (S1): 81-88. doi: 10.7668/hbnxb.20191996

Special Issue: Corn Tomato

• Tillage & Cultivation·Physiology & Biochemistry • Previous Articles     Next Articles

Effects of Organic Compound Substrate from Corn Stalkon Tomato Growth and Fruit Quality under Brackish and Fresh Water Irrigation

YNAG Guankai, WU Yufang, CAO Hanghang, WANG Xiaodong, ZHANG Xueyan   

  1. School of Agriculture, Ningxia University, Yinchuan 750021, China
  • Received:2021-01-04 Published:2021-12-28

Abstract: To investigate the effects of corn straw as the main component of the cultivation substrate on crop growth and fruit quality under brackish water and fresh water irrigation. Four treatments were designed, including the pure corn stalk(S-control), biochar(SB), S added with earthworm compost(SE), biochar and earthworm compost(SBE).Brackish water and fresh water irrigation were applied with each of the four substrate treatments, respectively, leading to a total of eight available treatments. The results showed that with same cultivation substrates, irrigational water had insignificant effect on the relative growth rates of plant height and stem volume at seedling stage. Compared with fresh water irrigation, brackish water irrigation had more positive effect on increasing the relative growth rate of plant height at later stage in SE treatment groups, with a 79.49% more increase in the relative growth rate. However, there were no significant differences in total biomass and root shoot ratio between SE-treated plants irrigated by fresh water and those irrigated by brackish water Brackish water irrigation promoted photosynthetic rate and transpiration rate compared to the fresh water irrigation in the S and SB treatments. Moreover, transpiration rate was reduced in SE, WUE was increased in SBE and SB. SB had the best effect of alleviating brackish water stress. Under the same culture substrate, brackish water significantly increased the soluble solid content compared to fresh water irrigation, and the highest soluble solid content was detected in SB, which was increased by 5.56%. SE and SB treatments significantly increased soluble sugar content in brackish water compared with fresh water irrigation by 53.84% and 50.15%, respectively, but there was no significant difference in yield. Compared with S treatment, SE increased transpiration rate under fresh water irrigation and had the highest Fv/Fm. SBE decreased the root-shoot ratio and SB increased the water use efficiency under fresh and brackish water irrigation. Compared with S treatment, SB treatment had the most significant effect on increasing soluble solid under brackish water irrigation, while SE treatment had the most significant effect on decreasing organic acid content and increasing soluble sugar content. Therefore, adding biochar and organic matter under different water irrigation can promote tomato growth, alleviate salt stress and improve fruit quality.

Key words: Tomato, Corn straw culture substrate, Brackish water, Biochar, Earthworm compost, Growth

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Cite this article

YNAG Guankai, WU Yufang, CAO Hanghang, WANG Xiaodong, ZHANG Xueyan. Effects of Organic Compound Substrate from Corn Stalkon Tomato Growth and Fruit Quality under Brackish and Fresh Water Irrigation[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(S1): 81-88. doi: 10.7668/hbnxb.20191996.

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