本文選題：渭北旱塬　切入點(diǎn)：蘋果　出處：《干旱區(qū)地理》2016年02期

【摘要】：為研究蘋果不同生長階段果園內(nèi)外溫度的變化特征,利用小氣候梯度自動(dòng)測定系統(tǒng)定位觀測果園冠層溫度、樹體溫度、不同高度層的空氣溫度以及不同深度的土壤溫度,并與對(duì)照地的溫度要素對(duì)比分析。結(jié)果表明:園內(nèi)外溫度日變化均呈單峰趨勢,冠層溫度峰值出現(xiàn)時(shí)間與園外氣溫一致,空氣溫度與樹體溫度較園外延遲1~2 h。園內(nèi)土壤溫度10 cm最高,其它層次變化與園外一致,隨深度增加而升高。園內(nèi)空氣溫度、冠層溫度、土壤溫度日較差在果樹生長始期最大,休眠期最小,樹體溫度日較差生長始期最大結(jié)果期最小。果園內(nèi)外氣溫差在結(jié)果期最為明顯最大達(dá)到3.0℃左右,園內(nèi)夜間高白天低。冠層溫度白天高于園外且在生長始期最顯著,夜間低于園外在結(jié)果期最為明顯達(dá)到15.0℃左右。樹體溫度與果園外溫度差在生長始期最大達(dá)到7.0℃,結(jié)果期最小。生長始期和結(jié)果期園內(nèi)土壤溫度在12∶00~22∶00之間低于園外,而休眠期則一直高于園外。
[Abstract]:In order to study the variation characteristics of apple temperature in and out of orchard at different growth stages, the canopy temperature, tree body temperature, air temperature of different height layer and soil temperature of different depth were observed by microclimate gradient automatic measuring system. The results showed that the diurnal variation of the temperature in and out of the garden showed a single peak trend, and the peak time of the canopy temperature was the same as that of the temperature outside the garden. The air temperature and the tree temperature were delayed by 1 ~ 2 h. The soil temperature in the garden was the highest, and the change of the other layers was the same as that outside the garden. The air temperature, the canopy temperature and the diurnal difference of the soil temperature in the orchard were the largest in the beginning of the fruit tree growth, and the change of the other layers was the same as that outside the garden. The dormancy period was the minimum, and the maximum fruiting period was the minimum at the beginning of the growing stage of the daily temperature range of the tree, and the maximum temperature difference between the orchard and the orchard was about 3.0 鈩，

本文編號(hào)：1656682