|Table of Contents|

Construction and Analysis of Hydroponic Lettuce Production Model Basing on NPK Concentration(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年14
Page:
11-16
Research Field:
Publishing date:

Info

Title:
Construction and Analysis of Hydroponic Lettuce Production Model Basing on NPK Concentration
Author(s):
ZHANG Dong1; 2; HU Xiaotao1; WANG Wen’e1; SU Yuanjun1; QIAO Yuan1; WANG Rui1
(1.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100；2.China Electric Power Construction Guiyang Survey and Design Research Institute Co.Ltd.，Guiyang，Guizhou 550000)
Keywords:
hydroponic lettuce; N; P; K; yield; mathematical model
PACS:
-
DOI:
10.11937/bfyy.201614003
Abstract:
For quantitative reveal the relationship between hydroponic lettuce yield and major nutrient elements(N，P，K) in nutrient solution，leaf lettuce of Hong Kong‘Bolicui’was used as test materials，hydroponic formula of different N，P，K were set，the three factors (N，P，K) five levels quadratic general rotary unitized experiment was adopted to analysis the affect to hydroponic lettuce yield.Lettuce yield regression mathematical model of three factors was established.The results showed that under the test conditions，in the early,the sequence of three factors on the yield was N>K> P;in the late，the sequence of three factors on the yield was N>P>K.The interaction between various factors，there was a positive correlation between the nitrogen ion concentration and potassium ion concentration，there was a negative correlation between the phosphorus ion concentration and potassium ion concentration.At the early stage of the growth，when the concentration of NPK for 8.46 mmol?L-1，0.62 mmol?L-1，2.57 mmol?L-1 respectively，the highest yield per plant was〖JP4〗 12.26 g.At the late stage of the growth，when the concentration of N，P，K for 4.65 mmol?L-1，0.69 mmol?L-1，2.43 mmol?L-1 respectively，the highest yield per plant was 88.27 g.

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Last Update: 2016-08-15