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| Investigation and Analysis of Fertilization Status of Typical Protected Vegetables in Yinan County |
| ZHONG Ziwen1，SHAO Peng2，JING Yongping1，XU Jianling2，LIU Zhaodong1，CAO Xuedong2，LI Yan1，ZHANG Yingpeng1* |
| 1State Key Laboratory of Nutrient Use and Management，Key Laboratory of Agro-Environment of Huang-Huai-Hai Plain，Ministry of Agriculture and Rural Affairs，Shandong Provincial Key Laboratory of Agricultural Non-Point Source Pollution Control and Prevention，Shandong Prvovincial Engineering Research Center of Environmental Protection Fertilizers，Institute of Agricultural Resources and Environment，Shandong Academy of Agricultural Sciences，Jinan 250100，Shandong，China；2Agricultural Technology Extension Center of Yinan County，Linyi 276300，Shandong，China |
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Abstract In order to clarify the current situation and existing problems of fertilization of typical protected vegetables in Yinan County，Xinji Town，Dazhuang Town，Zhangzhuang Town，Yiwen Town，Jiehu Street，Sucun Town and Zhuangbu Town were taken as the survey areas，and the yield and fertilization of protected tomatoes and cucumbers were investigated and analyzed by questionnaire and field sampling. The results showed that the average yield of solar greenhouse cucumber was 1.58 times that of archedgreenhouse cucumber，and the yield of greenhouse cucumber was significantly higher than that of greenhouse tomato；The average inputs of N，P2O5，and K2O in plastic greenhouse cucumber，solar greenhouse cucumber，and solar greenhouse tomato were 2.85-4.68，5.10-8.54，and 5.90-10.02 times that of corn，respectively；And the N，P2O5，and K2O inputs of plastic greenhouse cucumber，solar greenhouse cucumber，and solar greenhouse tomato were 1.46 to 2.41，3.36 to 7.03，and 0.92 to 1.35 times the demand，respectively. The proportion of nitrogen，phosphorus，and potassium nutrient supply does not match the proportion of vegetable demand，and potassium is relatively balanced，while the proportion of nitrogen and phosphorus is significantly too high；Under the same planting method，there is a significant difference in nitrogen，phosphorus，and potassium nutrient input between different regions for the same type of vegetable；The proportion of nutrients of base fertilizer and top dressing is unreasonable，and the proportion of base fertilizer is too high，especially the proportion of nutrients of base Manure exceeds 60%.Therefore，it is recommended that farmers reduce the input of nitrogen and phosphorus fertilizer，appropriately reduce the proportion of manure in the base fertilizer，
appropriately increase the proportion of chemical fertilizer topdressing，and select the appropriate chemical fertilizer according to the type and growth period of vegetables.
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Received: 11 April 2023
Published: 16 June 2023
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