【摘要】：土壤溫度是影響植物生長發(fā)育和養(yǎng)分轉(zhuǎn)化的重要因素,為闡明耕翻和不耕翻對不同層次土壤溫度及溫度傳導的影響,以八一鎮(zhèn)農(nóng)田為研究對象,采用ECH2O土壤水分溫度測定系統(tǒng),對不同層次(2、10、20、30和40 cm)土壤溫度進行測定。結(jié)果表明:土壤溫度呈單峰型日變化規(guī)律,表層2 cm土壤溫度最大值出現(xiàn)在14∶00,最小值出現(xiàn)在08∶00,隨著土壤層次的加深,土壤溫度最大值和最小值出現(xiàn)明顯的延遲效應(yīng);耕作對土壤日均溫度的影響主要表現(xiàn)在表層2cm,隨著土壤層次的加深,耕作的影響效應(yīng)逐漸減小;未耕翻土壤表層緊實的結(jié)構(gòu)有利于表層熱量向下層土壤傳導,從而使下層土壤日均溫高于耕翻土壤。
[Abstract]:Soil temperature is an important factor affecting plant growth and nutrient transformation. In order to elucidate the effects of ploughing and non-ploughing on soil temperature and temperature conduction at different levels, the farmland in Bayi Town was studied by ECH2O soil moisture temperature measurement system. Soil temperatures at different levels (2, 10, 20, 30 and 40 cm) were measured. The results showed that the soil temperature showed a single peak diurnal variation, the maximum value of 2 cm soil temperature appeared at 14 鈮，

本文編號：2483043