耕作对八一镇农田土壤温度的影响
发布时间：2019-05-22 15:45
【摘要】：土壤温度是影响植物生长发育和养分转化的重要因素,为阐明耕翻和不耕翻对不同层次土壤温度及温度传导的影响,以八一镇农田为研究对象,采用ECH2O土壤水分温度测定系统,对不同层次(2、10、20、30和40 cm)土壤温度进行测定。结果表明:土壤温度呈单峰型日变化规律,表层2 cm土壤温度最大值出现在14∶00,最小值出现在08∶00,随着土壤层次的加深,土壤温度最大值和最小值出现明显的延迟效应;耕作对土壤日均温度的影响主要表现在表层2cm,随着土壤层次的加深,耕作的影响效应逐渐减小;未耕翻土壤表层紧实的结构有利于表层热量向下层土壤传导,从而使下层土壤日均温高于耕翻土壤。
[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，
本文编号：2483043
[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，
本文编号：2483043
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