安徽农业科学
安徽農業科學
안휘농업과학
JOURNAL OF ANHUI AGRICULTURAL SCIENCES
2010年
7期
3607-3610
,共4页
关中平原%灌水定额%土层深度%土壤含水率
關中平原%灌水定額%土層深度%土壤含水率
관중평원%관수정액%토층심도%토양함수솔
Guanzhong Plain%Irrigation quota%Soil depth%Soil water content
[目的]研究不同灌水定额条件下土壤含水率变化.[方法]利用时域反射仪,对不同灌水定额入渗的土壤含水率进行测定;结合土壤质地特性,分析不同灌水定额下的土壤含水率随深度变化的曲线特征.[结果]不同土层深度土壤水分变化因灌溉水量不同而不同.不灌水时,0～70 cm土层土壤含水率为9.88%;70～100 cm土层土壤含水率逐渐增大,达17.00%;100～120 cm土层含水率达25.00%;120～180 cm土层土壤含水率为24.45%.灌水量为0.029 99 m~3/m~2时,0～30 cm土层土壤含水率逐渐增大,达30.00%;30～60 cm土层土壤含水率逐渐下降,降至25.00%,60～180 cm土层土壤含水率为25.00%;灌水量为0.059 97 m~3/m~2时,0～30 cm土层土壤含水率逐渐增大,达26.00%,30～100 cm土层土壤含水率为32.50%,120～180 cm土层土壤含水率恢复到未灌溉前状态;灌水量为0.089 96 m~3/m~2时,0～180 cm土层土壤含水率为25.86%.[结论]该研究结果对经济合理地利用水资源具有重要意义.
[目的]研究不同灌水定額條件下土壤含水率變化.[方法]利用時域反射儀,對不同灌水定額入滲的土壤含水率進行測定;結閤土壤質地特性,分析不同灌水定額下的土壤含水率隨深度變化的麯線特徵.[結果]不同土層深度土壤水分變化因灌溉水量不同而不同.不灌水時,0～70 cm土層土壤含水率為9.88%;70～100 cm土層土壤含水率逐漸增大,達17.00%;100～120 cm土層含水率達25.00%;120～180 cm土層土壤含水率為24.45%.灌水量為0.029 99 m~3/m~2時,0～30 cm土層土壤含水率逐漸增大,達30.00%;30～60 cm土層土壤含水率逐漸下降,降至25.00%,60～180 cm土層土壤含水率為25.00%;灌水量為0.059 97 m~3/m~2時,0～30 cm土層土壤含水率逐漸增大,達26.00%,30～100 cm土層土壤含水率為32.50%,120～180 cm土層土壤含水率恢複到未灌溉前狀態;灌水量為0.089 96 m~3/m~2時,0～180 cm土層土壤含水率為25.86%.[結論]該研究結果對經濟閤理地利用水資源具有重要意義.
[목적]연구불동관수정액조건하토양함수솔변화.[방법]이용시역반사의,대불동관수정액입삼적토양함수솔진행측정;결합토양질지특성,분석불동관수정액하적토양함수솔수심도변화적곡선특정.[결과]불동토층심도토양수분변화인관개수량불동이불동.불관수시,0～70 cm토층토양함수솔위9.88%;70～100 cm토층토양함수솔축점증대,체17.00%;100～120 cm토층함수솔체25.00%;120～180 cm토층토양함수솔위24.45%.관수량위0.029 99 m~3/m~2시,0～30 cm토층토양함수솔축점증대,체30.00%;30～60 cm토층토양함수솔축점하강,강지25.00%,60～180 cm토층토양함수솔위25.00%;관수량위0.059 97 m~3/m~2시,0～30 cm토층토양함수솔축점증대,체26.00%,30～100 cm토층토양함수솔위32.50%,120～180 cm토층토양함수솔회복도미관개전상태;관수량위0.089 96 m~3/m~2시,0～180 cm토층토양함수솔위25.86%.[결론]해연구결과대경제합리지이용수자원구유중요의의.
[Objective] The aim was to study variation of soil water content under different irrigation quota. [Method] By using Trime-TDR apparatus, soil water content with different irrigation quota infiltration was measured; combining the characteristics of soil texture, curve characteristics of soil water content variation with soil depth under different irrigation quota were analyzed. [Result] The results showed that different irrigation quota has resulted in variation of soil moisture in different layer depth. Soil moisture content was 9.88%, gradually going up 17%, reaching 25%, 24.45% in soil layer of 0-70 cm, 70-100 cm, 100-120 cm, 120-180 cm respectively without irrigation. Soil moisture content increase to 30%, gradually going down 25%, 25% in soil layer of 0-30 cm, 30-60 cm, 60-180 cm correspondingly when irrigation quota was 0.029 99 m~3/m~2. Soil moisture conternt was going up 26%, 32.5%, restoring the status before irrigation in soil layer of 0-30 cm, 30-100 cm, 120-180 cm accordingly when irrigation quota was 0.059 97 m~3/m~2. Soil moisture was 25.86% in soil layer of 0-180 cm when irrigation quota was 0.089 96 m~3/m~2.[Conclusion] The results will have significance for rational use of water resources.
