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| DOI：10.13522/j.cnki.ggps.2023091 |
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| Effect of Organic Fertilizer Replacing Chemical Fertilizer on Growth and Development of Pepper |
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LI Peiling, SUN Xincheng, GUO Zhijun, JIANG Wan, ZUO Lifen, LEI Huilan,
YANG Dan, LI Qi, XIAO Xin, YANG Yuanyi, LE Xizi, ZHANG Zhongwu
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1. Agriculture and Forestry Science and Technology College of Hunan Applied Technology University, Changde 415000, China;
2. Changde Agriculture and Forestry Science Academy, Changde 415000, China; 3. Agricultural and Rural Bureau of Lixian County, Changde 415000, China; 4. Agricultural and Rural Bureau of Dingcheng District, Changde 415000, China;
5. Agricultural and Rural Bureau of Hanshou County, Changde 415000, China
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| Abstract: |
| 【Objective】The optimum proportion of organic fertilizer instead of chemical fertilizer was screened out to provide scientific basis for fertilization in pepper production. 【Method】According to the level of chemical fertilizer reduction, seven fertilization gradients, such as pure chemical fertilizer, 1/6,1/3,1/2,2/3,5/6 and pure organic fertilizer, were designed to study the effect of organic fertilizer instead of chemical fertilizer on the growth and development of pepper. Taking pepper “Liushizao” as test material, the agronomic traits, yield and partial productivity of pepper under different fertilizer treatments were investigated, and the mathematical models of fertilizer application amount, yield and partial productivity were established. 【Result】There were significant differences in agronomic traits and yield per plant of pepper under different organic fertilizer substitution treatments. Under the condition of soil fertility in this study, the fertilizer effect equation between pepper yield (Y1), PFP (Y2) and compound fertilizer application rate (X) was obtained (Y1=-0.032 4X 2+33.936X+65 657, Y2=-0.000 002X 2+0.001 8X+2.668 2). 【Conclusion】The optimum application amount of compound fertilizer and organic fertilizer was 523.70 kg/hm2 and 31 907.41 kg/hm2, respectively, when the maximum yield of pepper was obtained. The optimum application rate of compound fertilizer and organic fertilizer were 450 kg/hm2 and 33 750 kg/hm2 respectively when the maximum fertilizer use efficiency (PFP) was obtained. |
| Key words: organic fertilizer; pepper; growth and development; partial factor productivity; yield |
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