Effect of Different Ratios of N，P and K Fertilizers on Yield of Asparagus Lettuce in Hexi Corridor High-altitude Cold Areas(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Different Ratios of N，P and K Fertilizers on Yield of Asparagus Lettuce in Hexi Corridor High-altitude Cold Areas

Author(s):: ZHANG Yu-xin; WANG Zhi-wei; WANG Xiao-wei; ZHANG Jun-feng; Institute of Vegetable Science，Gansu Academy of Agricultural Sciences，Lanzhou,Gansu 730070)

Keywords:: asparagus lettuce; fertilizer; yield; profit; high-altitude cold area

Abstract:: Taking Lactuca sativa‘Taiyuansun’ in Gansu Hexi corridor high-altitude cold area as material,‘311-A’ regression design was used to study the effect of different ratios of N，P，K fertilizers on yield of asparagus lettuce.The results showed that with maximum production 5 698.0 kg/667m² as the goal，the optimal combination of N，P and K were respectively 20.0 kg/667m²，4.7 kg/667m² and 7.3 kg/667m².The optimum economy fertilizing amount of N，P and K were respectively 20.0 kg/667m²，7.09 kg/667m² and 7.13 kg/667m²，and the optimal profit was 4 358.3 yuan/667m².

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Last Update: 2014-08-25