soil n. 1.泥土,土壤;土質(zhì)。 2.土地,國土。 3.滋生地,溫床。 4.農(nóng)業(yè)生活,務(wù)農(nóng)。 clayey [sandy] soil 黏[砂]壤。 poor [rich] soil 瘦[肥]土。 high soil 輕質(zhì)土。 alluvial soil 沖積土。 arable soil 耕地。 a tiller [child, son] of the soil 農(nóng)民;本地人。 the lord of the soil 領(lǐng)主,地主。 soil conservation 土壤保持。 soil invaders 【農(nóng)業(yè)】土壤寄居菌。 on foreign soil 在外國。 one's native [parent] soil 故鄉(xiāng),祖國。 n. 1.臟東西,污物,污穢,污斑。 2.糞尿,肥料。 a soil pipe 污水管。 night soil 糞便。 vt. 1.弄臟,弄污;污染,污損。 2.污辱,敗壞。 3.給…上糞[施肥]。 vi. 被弄臟,變臟。 soil one's hands with 〔比喻〕因…弄臟手;染手。 It soils easily. 那東西容易臟。 soil a field 給田施肥。 soiled clothes 臟衣服。 vt. (給畜舍內(nèi)畜牲)喂青草[青飼料];(用青飼料給畜牲)通便;催肥。 soiling crops 青飼料作物。
The influence of initial soil conditions on water penetration and soil moisture distribution 荒漠地區(qū)土壤初始狀況對水平入滲的影響
The wetting front moved nearly parallel to the soil surface , and its length could be described by a power function of time , when the distribution of initial soil water was uniform 當(dāng)初始含水量分布均勻時(shí),降雨入滲過程中濕潤鋒面幾乎平行坡面運(yùn)移,濕潤鋒深度與時(shí)間的關(guān)系可用冪函數(shù)描述。
By the experiments , some main factors influenced watering effect were analyzed . the results show that watering volume , initial soil water content , and width of water ditch influenced the watering effect differently 對影響灌水效果的幾個(gè)主要因素進(jìn)行了分析,實(shí)驗(yàn)表明,灌水量、土壤初始含水率、灌水溝寬度對灌水效果都有不同程度的影響。
The results indicated that even if there was different at initial soil condition , such as initial moisture content and initial salt content , salt content in soil profile and sar at top soil increased greatly after the high salinity water infiltrated 結(jié)果表明盡管土壤初始條件存在差異,但灌高礦化度水后,土壤含鹽量和溶液濃度總體增加,且土壤剖面特別是表層的sar明顯增大。
The results showed that the lower initial soil moisture content was , the less infiltration occurred and wetting front moved slowly , and soil salt were leached more efficiently . at the same time , salt reduced in the top soil and salt accumulated at the wetting front 通過對土壤初始含水量下土壤水鹽運(yùn)移規(guī)律室內(nèi)模擬試驗(yàn)研究,發(fā)現(xiàn)隨著土壤初始含水量的增加,相同入滲歷時(shí)內(nèi)的累積入滲量和濕潤鋒都在增加。
When the saline water ( < 3g / l ) infiltrated to 45cm , the top soil of 0 - 37cm was desalinized , when the saline water of 3g / l infiltrated , the desalinized depth was 0 - 15cm . moreover , sar of top soil increased with the sar of the infiltration water . 3 . through lab experiment , the characteristics of soil water and salt movement under different initial soil moisture content were analyzed 當(dāng)濕潤深度為45cm時(shí),小于3g l的微咸水入滲后, 0 - 37cm土層處于脫鹽狀態(tài),而3g l的微咸水入滲, 0 - 15cm土層處于脫鹽狀態(tài), 15cm - 35cm土層含鹽量基本等于初始含鹽量,但濕潤鋒處含鹽量很高。