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Main Quality Index Model of Nitrate Content in Hydroponic Lettuce Basing on NPK Concentration(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年06
Page:
6-9
Research Field:
Publishing date:

Info

Title:
Main Quality Index Model of Nitrate Content in Hydroponic Lettuce Basing on NPK Concentration
Author(s):
ZHANG Dong; HU Xiaotao; WANG Wen’e; SU Yuanjun; QIAO Yuan; WANG Rui
(Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas，Ministry of Education，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100)
Keywords:
lettuce; nitrate; N; P; K; regression model
PACS:
-
DOI:
10.11937/bfyy.201606002
Abstract:
Lettuce was used as test material，two indexes regression mathematical model on nitrates as established using a pot experiment with three factors in five levels，in order to reveal the relationship between nitrates and main nutrient elements (N，P，K) in hydroponics.The results showed that under the condition of this experiment，the influence of three factors on nitrate was N>P>K；N、P、K had negative effects on the nitrate content.N had a bigger effect on the concentration of nitrate；improving the concentration of NK appropriately was conducive to suppress the accumulation of nitrate content.

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Last Update: 2016-04-28