| 引用本文: | 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):-. |
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| 摘要: |
| 【目的】研究日光温室不同栽培季节番茄(Lycopersiconesculentum Mill.)的需水特性,探明水分需求与环境条件、植株生长发育的关系,建立水分需求模型,为精准灌溉提供依据。【方法】基于番茄对土壤含水量的生理需求,用称重法和水量平衡法计算不同生育阶段的需水量,同时观测植株生长及环境因子变化,分析水分需求及其影响因素,构建水分需求模型。【结果】冬春茬和秋冬茬番茄植株日需水量均呈先升高后降低变化趋势,秋冬茬需水高峰期出现时间早于冬春茬,但全生育期需水量低于冬春茬,畦栽番茄降低40.70%,盆栽番茄降低33.85%；冬春茬番茄日需水量变化主要与植株生长因素有关,包括叶面积和鲜生物量,而秋冬茬番茄日需水量与环境条件相关更密切,主要是日累积光强和空气相对湿度；需水量模型构建时需要考虑各种因素的综合影响,分别建立冬春茬和秋冬茬番茄的日需水量模型,两者拟合效果均较好。【结论】冬春茬和秋冬茬番茄需水特性存在差异,需水量的变化主要与植株生长和环境条件相关。日需水量模型构建时需要考虑各种因素的综合影响。 |
| 关键词: 日光温室；番茄；需水规律；环境条件；生育阶段；栽培茬口 |
| DOI： |
| 分类号:S626.5 |
| 基金项目: |
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| Study on Water Requirement Characteristics of Tomato in Different Cultivation Seasons in Solar Greenhouse |
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LI Yang, CHEN Zhenzhen, ZHANG Dalong, WEI Min
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College of Horticultural Science and Engineering of Shandong Agricultural University,Tai’an
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| 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 |
