地下滴灌葡萄园土壤温度的时空变化特征
发布时间:2019-07-08 13:32
【摘要】:以3年生克瑞森地下滴灌葡萄园为研究对象,分析土壤垂直方向上20、40、60、80 cm处的土壤温度日变化、土壤温度在葡萄不同生育期的变化及年变化特征。结果表明,地下滴灌葡萄园各深度的土壤温度日变化趋势基本相同,近地表处土壤温度日变化幅度相对较大,深层土壤温度日变化趋势平缓;以04:00、08:00、14:00、22:00代表土壤温度变化特征时刻的各深度土壤温度,在葡萄整个生育期内变化趋势均匀,萌芽期开始上升,果实生长期土壤温度达到最大值,后开始下降;葡萄园土壤温度在年变化过程中先上升后下降,7月达到最大值,土壤温度变化曲线随土壤深度的增加振幅减小;土壤深度40 cm处的年平均温度为13.14℃,高于其他深度土壤年平均温度;各深度土壤温度与气温有明显的二次函数关系,并随土层深度的变化显著性逐渐降低。
文内图片:
图片说明:地下滴灌葡萄园不同深度土连温度日变化规律
[Abstract]:The diurnal variation of soil temperature, the variation of soil temperature at 80 cm and the variation of soil temperature in different growth stages of grape were analyzed in the vertical direction of 20, 40, 60 and 80 cm, taking the 3-year-old Cleson underground drip irrigation vineyard as the research object. The results showed that the diurnal variation trend of soil temperature in each depth of underground drip irrigation vineyard was basically the same, the diurnal variation range of soil temperature near the surface was relatively large, and the diurnal variation trend of deep soil temperature was gentle. At 04: 00, 08: 00, 14: 00, 22: 00 represents the soil temperature of each depth at the characteristic time of soil temperature change, the change trend is uniform during the whole growth period of grape, the germination period begins to rise, the soil temperature reaches the maximum during the fruit growth period, and then begins to decrease, the vineyard soil temperature increases at first and then decreases, and reaches the maximum in July, and the amplitude of soil temperature change curve decreases with the increase of soil depth. The annual average temperature at 40 cm of soil depth is 13.14 鈩,
本文编号:2511618
文内图片:
图片说明:地下滴灌葡萄园不同深度土连温度日变化规律
[Abstract]:The diurnal variation of soil temperature, the variation of soil temperature at 80 cm and the variation of soil temperature in different growth stages of grape were analyzed in the vertical direction of 20, 40, 60 and 80 cm, taking the 3-year-old Cleson underground drip irrigation vineyard as the research object. The results showed that the diurnal variation trend of soil temperature in each depth of underground drip irrigation vineyard was basically the same, the diurnal variation range of soil temperature near the surface was relatively large, and the diurnal variation trend of deep soil temperature was gentle. At 04: 00, 08: 00, 14: 00, 22: 00 represents the soil temperature of each depth at the characteristic time of soil temperature change, the change trend is uniform during the whole growth period of grape, the germination period begins to rise, the soil temperature reaches the maximum during the fruit growth period, and then begins to decrease, the vineyard soil temperature increases at first and then decreases, and reaches the maximum in July, and the amplitude of soil temperature change curve decreases with the increase of soil depth. The annual average temperature at 40 cm of soil depth is 13.14 鈩,
本文编号:2511618
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