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| Studies on Application Effects of Fertilizer Recommended by Nutrient Expert on Chinese Cabbage |
| SHAN Nan1，2，CHUAN Limin1*，LIU Jipei3，ZHENG Huaiguo1，WANG Ailing1，ZHAO Jingjuan1 |
| 1Institute of Agricultural Information and Economics，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097，China；2Department of Environmental and Chemical Engineering，Tangshan University，Tangshan 063000，Hebei，China；3Daxing District Soil and Fertilizer Workstation，Beijing 102600，China |
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Abstract Rational fertilization is an important way to ensure crop yield and increase farmers’income．In the process of vegetable production，there is a common phenomenon of excessive or blind fertilization，especially under the conditions of complex planting system and shorter time window of crop fertilization．So it is urgent to establish a more convenient and efficient scientific nutrient management method suitable for different scale fields．Taking Chinese cabbage cultivar‘Beijingxin No.3’as test material，this experiment studied the application effect of fertilization method on Chinese cabbage recommended by nutrient expert based on yield response and agronomic efficiency．The results showed that the recommended application rates of nitrogen（N），phosphorus（P2O5）and potassium fertilizer（K2O）for Chinese cabbage in autumn open field production at outskirts of Beijing were 278，111 and 314 kg · hm-2，respectively．The yield of Chinese cabbage could reach 162.0 t · hm-2，which was significantly higher than that by farmers’conventional fertilization treatmen（t FP）and soil testing and formula fertilization（OPTS）．The plant absorptive amount of N，P and K was all higher than that of farmer conventional fertilization treatment．The partial factor productivity and agronomic efficiency of N and P were significantly higher than that of farmer conventional fertilization treatment and soil testing and formulated fertilization treatment．All recovery rate of N，P and K was the highest，among which the recovery rates of N，P were significantly higher than that of farme conventional fertilization treatment．The fertilization treatment recommended by nutrient expert could significantly increase the yield of Chinese cabbage，improve fertilizer use efficiency，thus improve the productivity effect．It could be a serviceable measure for managing Chinese cabbage fertilization．
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Received: 15 July 2020
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