【摘要】：以3年生克瑞森地下滴灌葡萄園為研究對象,分析土壤垂直方向上20、40、60、80 cm處的土壤溫度日變化、土壤溫度在葡萄不同生育期的變化及年變化特征。結(jié)果表明,地下滴灌葡萄園各深度的土壤溫度日變化趨勢基本相同,近地表處土壤溫度日變化幅度相對較大,深層土壤溫度日變化趨勢平緩;以04:00、08:00、14:00、22:00代表土壤溫度變化特征時刻的各深度土壤溫度,在葡萄整個生育期內(nèi)變化趨勢均勻,萌芽期開始上升,果實生長期土壤溫度達(dá)到最大值,后開始下降;葡萄園土壤溫度在年變化過程中先上升后下降,7月達(dá)到最大值,土壤溫度變化曲線隨土壤深度的增加振幅減小;土壤深度40 cm處的年平均溫度為13.14℃,高于其他深度土壤年平均溫度;各深度土壤溫度與氣溫有明顯的二次函數(shù)關(guān)系,并隨土層深度的變化顯著性逐漸降低。
文內(nèi)圖片：
圖片說明：地下滴灌葡萄園不同深度土連溫度日變化規(guī)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，

本文編號：2511618