Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (2): 188-198. doi: 10.7668/hbnxb.20193466

Special Issue: Soil fertilizer Hot Article Vegetables

• Resources & Environment · Plant Protection • Previous Articles     Next Articles

Effects of Chemical Fertilizer Reduction and Organic Fertilizer Application on Soil Quality,Eggplant Yield and Quality in Solar Greenhouse

XIAO Rang1, ZHANG Yongling1, ZHAO Yunchen2, GUO Shiqian3, CUI Zengtuan3, SHI Weijie4   

  1. 1. College of Civil Engineering,Hexi University,Research Institute of Water Resources Protection and Utilization in Hexi Corridor,Zhangye 734000, China
    2. College of Agriculture and Ecological Engineering,Hexi University,Zhangye 734000, China
    3. Cultivated Land Quality and Construction Protection Station of Gansu,Lanzhou 730020, China
    4. Zhangye Ganzhou District Agricultural Technology Promotion Center,Zhangye 734000, China
  • Received:2022-12-16 Published:2023-04-28

Abstract:

In order to investigate the effects of chemical fertilizer reduction and combined application of organic fertilizer on soil microbial quantity,nutrient content,eggplant yield,quality and water use efficiency in Hexi oasis,the field experiments of seven different treatments were carried out in 2019 and 2020 with purple long eggplant Tianlong 8 as the test material.Seven treatments were set up,including 100% common chemical fertilizer(FH),80% common chemical fertilizer+20% organic fertilizer(FE),60% common chemical fertilizer+40% organic fertilizer(FS),40% common chemical fertilizer+60% organic fertilizer(FF),20% common chemical fertilizer+80% organic fertilizer(FT),100% organic fertilizer(FZ)and no fertilizer control(CK).The changes of soil microbial quantity,nutrient content and yield in 0-20 cm after eggplant harvest were analyzed.The results showed that chemical fertilizer reduction combined with organic fertilizer could increase the number of bacteria,fungi,actinomycetes and the contents of total nitrogen,total phosphorus,total potassium and organic matter in soil.Among them,60% chemical fertilizer+40% organic fertilizer had the best improvement effect,followed by 80% chemical fertilizer+20% organic fertilizer.The combined application of pure chemical fertilizer had little effect on the growth dynamics of eggplant,but the combined application of organic fertilizer could significantly promote the nutrient absorption of eggplant,increase plant height,stem diameter and leaf area index,and regulate the yield components,laying the foundation for high yield of eggplant.Chemical fertilizer reduction combined with organic fertilizer can promote the distribution of eggplant photosynthetic products to fruit and improve eggplant yield.The economic yield of 60% chemical fertilizer+40% organic fertilizer treatment was the highest(42 716.15 kg/ha),followed by 40% ordinary chemical fertilizer+60% organic fertilizer(41 922.06 kg/ha)and 80% ordinary chemical fertilizer+20% organic fertilizer(40 302.74 kg/ha),which were 53.64%,50.78% and 44.96% higher than CK.Chemical fertilizer reduction combined with organic fertilizer can improve the water and heat status of soil tillage layer and improve the water use efficiency of eggplant.The water use efficiency of FS was the highest(10.46 kg/m3),followed by FF(10.37 kg/hm3)and FT(9.79 kg/hm3),which was 47.53%,46.19% and 38.08% higher than that of CK.Therefore,considering the soil environment,yield and water use efficiency,the best recommended treatment is chemical fertilizer and organic fertilizer is 60%+40% organic fertilizer.

Key words: Eggplant, Organic fertilizer, Soil quality, Yield, Water use efficiency

Cite this article

XIAO Rang, ZHANG Yongling, ZHAO Yunchen, GUO Shiqian, CUI Zengtuan, SHI Weijie. Effects of Chemical Fertilizer Reduction and Organic Fertilizer Application on Soil Quality,Eggplant Yield and Quality in Solar Greenhouse[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(2): 188-198. doi: 10.7668/hbnxb.20193466.

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