Abstract:

【Objective】 To study the effect of microclimate on the quality of grape fruit under the control of mist, and to determine the way of mist control with high quality and high yield, so as to provide theoretical basis and data support for promoting water-saving and quality improvement of grape. 【Methods】 the basis of conventional drip irrigation, a micro spray mist control irrigation technology was formed by superposing with micro spray.Through monitoring the changes of temperature, humidity, fruit quality and other indicators in vineyard under the micro spray mist control, the response relationship between micro climate factors and grape fruit quality under the mist control was clarified. 【Results】 with CK treatment, the mean temperature in daytime was 1.5-3.0℃ lower, the mean temperature at night was 1.3-2.1℃ lower, the mean temperature difference was 0.1-1.6℃ lower, the mean temperature was 1.5-2.5℃ lower, the mean humidity in daytime was 5.7%-7.6%, the mean humidity at night was 4.7%-7.0%, and the mean humidity was 5.0%-7.0%.In terms of fruit quality, soluble solids content of WP₁, WP₂, WP₃ and CK were 21.5%, 21.1%, 19.5% and 19.1% respectively, total sugar content was 19.1%, 18.2%, 17.9% and 17.5% respectively, total acid content was 4.0, 5.1, 5.9 and 6.4 g/L respectively, VC content was 2.8, 2.5, 2.5 and 2.1 μg/g respectively.Meanwhile, the fruit 0.26 higher than CK treatment In the process of grape fruit growth and development, the average humidity at night the key microclimate factor that the greatest impact.According to the correlation and regression model, when the average humidity at night 46.2%-51.1%, it beneficial to improve the quality of grape fruit. 【Conclusion】 the critical period of grape fruit growth, using the technology of mist control under the shelf and spraying water for 1 hour every day is beneficial to improve the quality of grape fruit, and the average humidity at night can be used to analyze and predict the growth and quality changes of grape fruit in this area.

Key words: grape; microclimate; fruit quality; response relationship

摘要：

【目的】 分析弥雾调控技术下微气候变化对葡萄果实品质的影响,研究优质高产的弥雾调控技术方式,为葡萄节水提质提供理论基础和数据支撑。【方法】 在常规滴灌的基础上与微喷叠加,组成微喷弥雾调控灌水技术处理,监测各微喷弥雾调控处理下葡萄园温度、湿度、果实品质等指标变化,分析弥雾调控下微气候因子与葡萄果实品质的响应关系。【结果】 采用弥雾调控可有效降低葡萄园温度和增加湿度,与CK处理相比,白天平均温度低1.5~3.0℃,夜晚平均温度低1.3~2.1℃,平均温度差低0.1~1.6℃,平均温度低1.5~2.5℃,白天平均湿度高5.7%~7.6%,夜晚平均湿度高4.7%~7.0%,平均湿度高5.0%~7.0%。葡萄果实品质,WP₁、WP₂、WP₃和CK处理可溶性固形物含量分别为21.5%、21.1%、19.5%和19.1%,总糖含量分别为19.1%、18.2%、17.9%和17.5%,总酸含量分别为4.0、5.1、5.9和6.4 g/L,VC含量分别为2.8 、2.5、2.5和2.1 μg/g,弥雾调控处理果粒均重高出CK处理0.26、0.18、0.26 g。在葡萄果实生长发育过程中,晚上平均湿度是影响最大的关键微气候因子,当夜晚平均湿度值为46.2%~51.1%时,有利于提高葡萄果实品质。【结论】 在葡萄果实生长关键期,采用架下弥雾调控技术,每天喷水1 h,有利于提高葡萄果实品质,并可以用晚上平均湿度对葡萄果实生长和品质变化进行分析和预测。

关键词: 葡萄, 微气候, 果实品质, 响应关系