Acta Agriculturae Boreali-Sinica ›› 2022, Vol. 37 ›› Issue (2): 104-111. doi: 10.7668/hbnxb.20192345

Special Issue: Soil fertilizer

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

Effects of Controlled Release Blended Fertilizer with Application Rate Reduction on Head Lettuce

CAO Bing1,2, WANG Xuexia1,2, NI Xiaohui1,2, CHEN Yanhua1,2, WEN Fangfang3, LIU Zifei3, ZHANG Mengjia3, ZUO Qiang1,2, ZOU Guoyuan1,2, ZHANG Xuelian3   

  1. 1.Institute of Plant Nutrition,Resources and Environment,Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097,China
    2.Beijing Engineering Technology Research Center for Slow,Controlled-Release Fertilizer, Beijing 100097,China
    3.Beijing Soil and Fertilizer Extension Service Station,Beijing 100029,China
  • Received:2021-12-20 Published:2022-04-28

Abstract:

In order to explore a simple and efficient nutrient management method for open field head lettuce production,a field experiment was carried out in lettuce planting park of Beijing suburb.No nitrogen(CK),conventional fertilization(CF),conventional fertilization with 20% rate reduction of N,P and K(-20%CF),as well as controlled release blended fertilizer with 20% rate reduction of N,P and K(-20%CU)were included in this experiment.The effects of single basal application of controlled-release blended fertilizer on yield,quality,nutrient absorption,physiological characteristics of leaves,and soil nitrate nitrogen residue were investigated.The results showed that compared to CF,the total yield and economic yield of lettuce of-20%CU were increased by 2.32% and 3.28%,respectively;nitrate content of lettuce was significantly decreased by 29.98%.During the growth period of heading lettuce,the chlorophyll content and nitrogen metabolism enzyme activities(glutamate synthase,nitrate reductase,nitrite reductase,glutamate synthase,glutamate dehydrogenase and glutamine synthase)of the leaves of heading lettuce treated with controlled release blended fertilizer at different growth stages(seedling stage,rosette stage,middle heading stage and harvest stage)were not different from those of conventional fertilization.At harvest,the residual nitrate content in 0-100 cm soil of all treatments was generally not high,but the treatment of controlled-release blended fertilizer had a certain risk of nitrate leaching.In conclusion,single basal application of controlled release blended fertilizer with application rate reduction can significantly improve the quality of lettuce,the premise of stabilizing the yield of head lettuce.It has great prospective in large-scale production of head lettuce.

Key words: Head lettuce, Controlled release blended fertilizer, Nitrogen utility efficiency, Physiological characteristics

Cite this article

CAO Bing, WANG Xuexia, NI Xiaohui, CHEN Yanhua, WEN Fangfang, LIU Zifei, ZHANG Mengjia, ZUO Qiang, ZOU Guoyuan, ZHANG Xuelian. Effects of Controlled Release Blended Fertilizer with Application Rate Reduction on Head Lettuce[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(2): 104-111. doi: 10.7668/hbnxb.20192345.

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