【摘要】：采用環(huán)刀法,測定了瓊東南萬寧興隆地區(qū)典型黃色磚紅壤上不同土地利用及不同初始含水量下的土壤入滲過程,分析對比了3種常用入滲模型的適宜性。結(jié)果表明,不同土地利用方式之間,胡椒園土壤初始入滲率、穩(wěn)定入滲率和1 h累積入滲量等入滲指標(biāo)均明顯高于自然草地土壤和咖啡園土壤,入滲性能最佳;雖然自然草地的穩(wěn)定入滲率和1 h累積入滲量等指標(biāo)略高于咖啡園土壤,但二者整體入滲性能相差不大。造成上述入滲性能差異的原因與不同種植園對土壤改造程度不同而引起土壤質(zhì)地變化有關(guān)。不同初始含水量對土壤入滲過程也有顯著影響,隨土壤初始含水量增加,初始入滲率、穩(wěn)定入滲率和1 h累積入滲量等指標(biāo)均呈下降趨勢,表明土壤越濕潤,土壤入滲性能也相應(yīng)減弱。Kostiakov模型和Horton模型對不同土地利用和初始含水量下的土壤入滲過程擬合效果較好,可作為今后黃色磚紅壤土壤入滲的適宜模型。本研究結(jié)果可為瓊東南黃色磚紅壤地區(qū)農(nóng)業(yè)生產(chǎn)及相關(guān)灌溉策略制定提供參考。
[Abstract]:Soil infiltration process under different land use and different initial water content on typical yellow latosol in Wangning Xinglong area, southeast of Qiongnan was determined by circular knife method, and the suitability of three common infiltration models was analyzed and compared. The results showed that the initial infiltration rate, stable infiltration rate and 1 h cumulative infiltration rate of pepper garden soil were significantly higher than those of natural grassland soil and coffee garden soil, and the infiltration performance was the best among different land use patterns. Although the steady infiltration rate and 1 h cumulative infiltration rate of natural grassland were slightly higher than those of coffee garden soil, there was no significant difference in the overall infiltration performance between them. The difference of infiltration performance is related to the change of soil texture due to the different degree of soil modification in different plantations. With the increase of soil initial water content, the initial infiltration rate, stable infiltration rate and 1 h cumulative infiltration rate all showed a decreasing trend, indicating that the soil was wetter. Kostiakov model and Horton model had a good fitting effect on soil infiltration process under different land use and initial water content, which could be used as a suitable model for soil infiltration in yellow latosol red soil in the future. The results of this study can provide reference for agricultural production and irrigation strategy formulation in yellow latosol area of southeast Qiongnan.
【作者單位】： 中國熱帶農(nóng)業(yè)科學(xué)院香料飲料研究所;農(nóng)業(yè)部香辛飲料作物遺傳資源利用重點(diǎn)實(shí)驗(yàn)室;海南省熱帶香辛飲料作物遺傳改良與品質(zhì)調(diào)控重點(diǎn)實(shí)驗(yàn)室;
【基金】：中央級(jí)公益性科研院所基本科研業(yè)務(wù)費(fèi)專項(xiàng)“香草蘭、胡椒、可可高效施肥技術(shù)研究與示范”(No.1630142017013)
【分類號(hào)】：S152.7
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本文編號(hào)：2464155