|Table of Contents|

Optimization of Automatic Fertigation Parameters for Tomato in Greenhouse

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年10
Page:
56-62
Research Field:
Publishing date:

Info

Title:
Optimization of Automatic Fertigation Parameters for Tomato in Greenhouse
Author(s):
LIANG XinshuLIAN XiaojuanWANG YanWANG Zhengxiang
(Institute of Agricultural Resources and Environment,Tianjin Academy of Agricultural Sciences,Tianjin 300192)
Keywords:
tomatoirrigation parametersintegration of water and fertilizerautomatic irrigation
PACS:
-
DOI:
10.11937/bfyy.20215292
Abstract:
Taking tomatoes in the solar greenhouse autumn-winter season and winter-spring season as test materials,an experiment set five irrigation lower limits during the fruiting period of tomato,and the corresponding soil relative water contents were respectively 95%FC (field water holding capacity),90%FC,80%FC,70%FC and 60%FC,systematically studying the effects of different water treatments on the yield and fruit quality of tomato,water and fertilizer use efficiency and soil physical and chemical properties,in order to provide reference for the eutomatic water and fortilizer integration mode.The results showed that when the lower irrigation limit of soil water content was 95%FC,the frequencies and amounts of irrigation and fertilization were raised.But the yield was not improved,leading to decreasing the irrigation water use efficiency and fertilizer partial productivity and increasing nutrients and salt in soil.When the lower irrigation limit of soil water content was 60%FC,although the application frequencies and inputs and water and fertilizer and the yield of tomato were reduced,the fruit quality of tomato and efficiencies of irrigation water and fertilizer were significantly increased.In addition,the insufficient amount of fertilizer was not conducive to the maintenance of soil fertility.Due to the reasonable inputs of water and fertilizer,the 80%FC and 70%FC treatments could ensure higher tomato yield and fruit quality,irrigation water utilization and fertilizer partial productivity,but the 70%FC treatment could cause a certain degree reduction in yield under the winter-spring season.Generally,when the lower irrigation limit of soil water content was 80%FC,the total amount of irrigation water during the whole growth period of tomatoes was 147 mm in autumn-winter season and respectively was 291 mm in winter-spring season,which was a reasonable irrigation parameter for automatic water and fertilizer management of tomato in a solar greenhouse.

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Last Update: 2022-07-04