【摘要】：以河北平原區(qū)望都灌溉試驗站為例,選取210m×210m的正方形田塊進(jìn)行試驗,在該范圍內(nèi)布置64個測點(diǎn),分別測量0~30、30~50、50~80cm三個深度的土壤含水率信息。利用經(jīng)典統(tǒng)計和地統(tǒng)計方法分析了田間土壤含水率的空間變異結(jié)構(gòu),并采用協(xié)同克里格插值技術(shù)得到了該區(qū)域土壤含水率的空間分布狀況。結(jié)果表明,0~30cm土層及50~80cm土層的土壤含水率具有中等空間相關(guān)性,其相關(guān)距離分別為66.4、75.7m,而30~50cm土層表現(xiàn)出了強(qiáng)烈的空間相關(guān)性,相關(guān)距離為88.2m,研究結(jié)果可為實現(xiàn)灌區(qū)精準(zhǔn)灌溉和土壤墑情預(yù)測提供科學(xué)的理論指導(dǎo)。
[Abstract]:Taking Wangdu irrigation test station in Hebei plain as an example, the square field with 210m 脳 210m was selected to carry out the experiment. Within this range, 64 measuring points were arranged to measure the soil moisture content information at three depths of 0 ~ 30, 30 ~ 50 and 50 ~ 80 cm, respectively. The spatial variation structure of soil moisture content in the field was analyzed by means of classical and geostatistical methods, and the spatial distribution of soil moisture content in the region was obtained by using collaborative Kriging interpolation technique. The results showed that the soil moisture content of 0~30cm soil layer and 50~80cm soil layer had moderate spatial correlation, and the correlation distance was 66.4 m and 75.7 m respectively, while that of 30~50cm soil layer showed strong spatial correlation, the correlation distance was 88.2 m, and the correlation distance of 30~50cm soil layer was 88.2 m. The results can provide scientific theoretical guidance for accurate irrigation and soil moisture prediction in irrigation districts.
【作者單位】： 河北農(nóng)業(yè)大學(xué)城鄉(xiāng)建設(shè)學(xué)院;保定市水利局;
【基金】：河北農(nóng)業(yè)大學(xué)青年科學(xué)基金(QN201319)
【分類號】：S152.7
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本文編號：2433020