椰糠栽培番茄耗水量与气象因子相关性研究

Correlation between Water Consumption of Tomato under Coconut Coir Cultivation Condition and Meteorological Factors

为实现椰糠栽培方式下番茄的节水高产,同时为智能化灌溉提供理论支持,本试验采用称重法测定番茄的逐日、逐小时耗水量,记录日光温室内气象因子,并分析其相关性,制定灌溉模型,为番茄椰糠栽培合理灌溉提供数据支撑。试验结果表明:苗期逐日耗水量为94.1 m L/株,开花期为539.2 m L/株,结果期为746.8 m L/株。苗期逐小时耗水量为17.1 m L/株,开花期逐小时耗水量为44.4 m L/株,结果期逐小时耗水量为76.4 m L/株。得出耗水量与累计光辐射能相关性最强,制定了不同生长阶段的线性模型,为建立椰糠栽培条件下番茄科学灌溉制度提供理论支撑,为进一步实现利用气象因子智能调控灌溉打下基础。

For water-saving of tomato under coconut coir cultivation condition and providing theoretical support for intelligent irrigation, in this experiment, the daily and hourly water consumption of tomato is measured by the weighing method, the environmental factors in greenhouse is recorded, the correlation is analyzed, and the irrigation model is formulated to provide data for reasonable irrigation of tomato under coconut coir cultivation condition. The results show that daily water consumption at the seedling stage, flowering stage, and fruiting stage is 94.1, 539.2, 746.8 mL/plant, respectively. Hourly water consumption at the seedling stage, flowering stage, and fruiting stage is 17.1, 44.4, 76.4 mL/plant, respectively. The correlation between water consumption and cumulative radiation is the biggest. The linear model for different growth stages is formulated to provide theoretical support to establish reasonable irrigation system of tomato under coconut eoir cultivation condition and lay foundation for the further intelligence irrigation by using environmental factors.