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| Effects of Different Biochars on Growth，Yield and Quality of Greenhouse Pepper under Chemical Fertilizer Reduction |
| （1Institute of Horticulture，Academy of Anhui Agricultural Science，Hefei 230031，Anhui，China；2Agr cultural Comprehensive Service Station of Caoan Town，Huainan City，Huainan 232000，Anhui，China；3Agricultural Technology Service Center of Liucheng Town，Huaiyuan County，Bengbu 233000，Anhui，China；4Agricultural Technology Promotion
Center of Yongqiao District，Suzhou City，Suzhou 234000，Anhui，China） |
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Abstract Abstract：The application effects of two kinds of wheat straw biochar on pepper production under thecondition of chemical fertilizer reduction were investigated through field experiments．The results showed thatunder the condition of reducing the total nutrient content of nitrogen，phosphorus and potassium by more than30%，biochar NO.1（T1）and biochar NO.2（T2）could significantly improve the physical and chemicalproperties of soil and improve the yield and quality of greenhouse pepper．Compared with the control（CK）without biochar application，the soil organic matter content of T1 and T2 treatments increased by 15.57%and 30.54%，and the yield of pepper increased by 16.28% and 12.66%，respectively，all with significantdifferences．The pepper fruits of T1 treatment had the highest dry matter and VC content，and the pepper fruits of T2 treatment had the highest soluble sugar and protein content．Comprehensively comparing the fertilization effects of the two biochars，it was found that T1 treatment had a better effect on increasing pepper yield，and T2 treatment had a better effect on improving pepper quality．
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Received: 14 September 2023
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