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農(nóng)田土壤含水率和堅實度采集儀設(shè)計與試驗
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Test on the Field Soil Moisture and Compaction Acquisition Instrument
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    摘要:

    設(shè)計了可以定位、快速、同步測量農(nóng)田土壤含水率和堅實度的采集儀。在探討該儀器測量原理和軟硬件設(shè)計的基礎(chǔ)上,對其測量的準(zhǔn)確性進(jìn)行了試驗分析。某苗圃地,選定5m×5m的30個采樣點,用農(nóng)田信息采集儀和烘干法分別測量各點的土壤含水率,并對測量值進(jìn)行簡單相關(guān)分析，其相關(guān)系數(shù)為0.9179,達(dá)到極顯著性相關(guān)。以同樣的方式,采用農(nóng)田信息采集儀和SC900型數(shù)字土壤堅實度儀,分別測量30個采樣點10cm和20cm深度處的土壤堅實度值,并對兩種方法在兩個深度時的測量值進(jìn)行相關(guān)性分析,其相關(guān)系數(shù)分別為0.8267和0.9245,達(dá)到極顯著性相關(guān)。試驗結(jié)果表明,該采集儀對農(nóng)田土壤含水率和堅實度測量的準(zhǔn)確性可滿足農(nóng)業(yè)生產(chǎn)要求。

    Abstract:

    A field information acquisition instrument for positioning, rapid and simultaneous measurement of soil moisture content and compaction was designed. Based on the measurement theory and the software and hardware design of the instrument, the accuracy of measurement was analyzed. 30 soil samples were taken from a tree nursery with the sampling interval of 5 m×5 m. The soil moisture content was measured by the field information acquisition instrument and drying method, respectively. The correlation analysis of the measurement values was carried out and the correlation coefficient is 0.9179. In the same way, 30 samplings of soil compaction in deeps of 10cm and 20cm were measured by the field information acquisition instrument and SC900 digital soil compactness instrument. The correlation analysis to the measurement values of tow depths by both methods was carried out and the correlation coefficients were 0.8267 and 0.9245, respectively. The test results showed that the measurement accuracy of acquisition instrument for the soil moisture content and compaction in field satisfied the requirement of agriculture production.

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張淑娟,裘正軍,王鳳花,趙華民,張海紅.農(nóng)田土壤含水率和堅實度采集儀設(shè)計與試驗[J].農(nóng)業(yè)機械學(xué)報,2010,41(9):75-79. Test on the Field Soil Moisture and Compaction Acquisition Instrument[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(9):75-79.

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