A comprehensive study was conducted to analyse the influence of film mulching on the soil water content (SWC), plant physiological and morphological parameters, yield and irrigation water use efficiency (IWUE) of cucumber grown in a greenhouse. The experiment was designed to set the film mulching (M1) and non-film mulching (M0) applications under two irrigation levels (T1: sufficient irrigation; T2: insufficient irrigation). Thus, four treatments, i.e. T1M1, T1M0, T2M1 and T2M0 were set. The response of plant growth, physiology characteristics, yield and SWC under the designed treatments was analysed based on the data from two planting years (2019 and 2020). Applying film mulching effectively improved the SWC by approximately 10%. The cucumber plant height, stem diameter and leaf area index (LAI) under the T2M1 treatment increased by 38.0–63.1, 16.5–24.9 and 84.0–89.4%, respectively, compared to the T2M0 treatment. The maximum yield was found in the T1M1 treatment, which increased by 24.2–27.5% compared to T1M0. Film mulching increased cucumber yield by 18.0–24.7% compared to non-film mulching. It was also observed that film mulching under insufficient drip irrigation had a positive influence on plant morphological parameters (photosynthetic rate and stomatal conductance). Among the four treatments, the maximum photosynthetic rate (= 20.69 μmol m⁻² s⁻¹) and stomatal conductance (= 0.47 μmol m⁻² s⁻¹) were found in the T2M1 treatment. The sap flow rate under the T2M1 treatment was close to that under the T1M0 treatment, while the largest variation in the sap flow rate occurred under the T1M1 treatment, and the smallest variation occurred under the T2M0 treatment. It can be concluded that the effect of the film mulching technique on cucumber yield and IWUE was significant under insufficient drip irrigation.

中文翻译：

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地膜覆盖对滴灌不足黄瓜生理形态参数及产量的影响

综合研究分析了覆膜对温室黄瓜土壤含水量（SWC）、植物生理形态参数、产量和灌溉水分利用效率（IWUE）的影响。实验设计在两个灌溉水平（T1：充分灌溉；T2：灌溉不足）下设置地膜覆盖（M1）和非覆盖覆盖（M0）应用。因此，设置了四个处理，即T1M1、T1M0、T2M1和T2M0。根据两个种植年份（2019 年和 2020 年）的数据，分析了设计处理下植物生长、生理特性、产量和 SWC 的响应。应用地膜覆盖有效地提高了约 10% 的 SWC。T2M1处理下黄瓜株高、茎粗和叶面积指数（LAI）分别增加38.0~63.1、16。与 T2M0 治疗相比，分别为 5–24.9 和 84.0–89.4%。在 T1M1 处理中发现最大产量，与 T1M0 相比增加了 24.2-27.5%。与不覆膜相比，覆膜黄瓜产量提高了 18.0-24.7%。还观察到在滴灌不足的情况下覆膜对植物形态参数（光合速率和气孔导度）有积极影响。四个处理中，最大光合速率（= 20.69 μmol m 还观察到在滴灌不足的情况下覆膜对植物形态参数（光合速率和气孔导度）有积极影响。四个处理中，最大光合速率（= 20.69 μmol m 还观察到在滴灌不足的情况下覆膜对植物形态参数（光合速率和气孔导度）有积极影响。四个处理中，最大光合速率（= 20.69 μmol m^-2  s ^-1 ) 和气孔导度 (= 0.47 μmol m ^-2  s ^-1 ) 在 T2M1 处理中被发现。T2M1处理下的液流量与T1M0处理接近，而T1M1处理下液流量变化最大，T2M0处理下变化最小。可以得出结论，在滴灌不足的情况下，覆膜技术对黄瓜产量和IWUE的影响显着。