| Cite this article: | 李洋,陈真真,张大龙,等.日光温室不同栽培季节番茄的需水特性研究[J].灌溉排水学报,2019,(增刊2):-. |
| LI Yang,CHEN Zhenzhen,ZHANG Dalong,et al.日光温室不同栽培季节番茄的需水特性研究[J].灌溉排水学报,2019,(增刊2):-. |
|
| |
|
|
| This article has been：Browse 2458Times Download 0Times |
|
|
|
| DOI： |
|
| Study on Water Requirement Characteristics of Tomato in Different Cultivation Seasons in Solar Greenhouse |
|
LI Yang, CHEN Zhenzhen, ZHANG Dalong, WEI Min
|
|
College of Horticultural Science and Engineering of Shandong Agricultural University,Tai’an
|
| Abstract: |
| 【Objective】The water requirement characteristics of tomato (Lycopersiconesculentum Mill.) in different cultivation seasons in solar greenhouse are studied to explore the relationship between water demand and environmental conditions, plant growth and development, and establish a water demand model to provide a basis for precision irrigation.【Method】Based on the physiological demand of tomato for soil water content, the water requirement at different growth stages was calculated by weighing method and water balance method. At the same time, the changes of plant growth and environmental factors were observed, the water demand and its influencing factors were analyzed, and the water demand model was constructed.【Result】The daily water requirement of tomato plants in winter-spring season and autumn-winter season first increased and then decreased. The peak period of water demand in autumn-winter crop was earlier than that in winter-spring crop, but the water requirement in the whole growth period was lower than that in winter-spring crop, ridged tomato decreased by 40.70%, potted tomato decreased by 33.85%. The change of daily water requirement of tomato in winter-spring season was mainly related to plant growth factors, including leaf area and fresh biomass, while the daily water requirement of tomato in autumn-winter season was more closely related to environmental conditions, mainly daily cumulative light intensity and air relative humidity. In the construction of water demand model, it was necessary to consider the comprehensive influence of various factors.And the daily water demand models of winter-spring crop and autumn-winter crop were established respectively, and the fitting effects of both models were good.【Conclusion】There are differences in water requirement characteristics between winter-spring crop and autumn-winter crop, and the change of water requirement was mainly related to plant growth and environmental conditions. The comprehensive influence of various factors should be considered in the construction of daily water demand model. |
| Key words: solar greenhouse; tomato; water requirement; environmental conditions; growth stage; cultivation stubble |
|
|
|
|
|
|
