leached soil 中文意思是什麼
leached soil
解釋
淋溶土-
Contrasting stone coal to the soil developed from it and water to water leached from stone coal shows that slight fluorine pollution of surface water and plant resulted from weathering of stone coal and leaching
摘要通過對比典型剖面上的石煤及其風化發育的土壤的氟含量、流經石煤層的水與不經過石煤層的水的氟含量，研究石煤風化、淋溶時氟對土壤、地表水和農作物的影響。 -
Much of the goodness has been leached from the soil by the action of continuous heavy rain
土壤中不少肥力已被連續的暴雨浸濾走了。 -
A leached soil formed mainly in cool, humid climates
灰壤，灰化土一種淋洗的土壤，主要形成於陰涼而濕潤的地帶 -
Most highly weathered and leached upland soils in s. e asia are so deficient in primary nutrients that economic yields of healthy crops cannot be produced, unless nutrients are added to the soil
東南亞大多數高度風化和淋溶的旱地土壤主要養分貧乏，以致除非向土壤施加養分，否則不可能獲得健康作物的經濟產量。 -
Cadmium ( cd ) is one of the mostly polluting heavy metal. first, to characterize the adsorption property of cadmium, cadmium adsorption isotherms in soils were determined by the batch experiment, and the adsorption parameters were obtained ; second, miscible displacement experiments were carried out in saturated homogeneous soil columns under steady - state water flow, and the dynamics of flux concentration of cadmium leached in soils were measured
首先，用批量平衡法開展了鎘在砂質壤土、壤質砂土和粉壤土中的吸附特性的試驗研究，獲得吸附常數；其次，採用易混合置換實驗的方法，對其在穩定流場飽和土壤中的運移進行了室內研究，獲得了目標溶質鎘在定濃度輸入條件下的出流液濃度動態。 -
( 3 ) the amount of nitrogen leached was in the decreasing order as no3 - fertilizer > urea > nh4 + - fertinzer, and the main form of n leached was the n fertilizers added. the amount of nitrogen leached from sand soil exceed in that from clay soil
（ 3 ）在滴灌施肥條件下，三種氮肥（硝態氮、銨態氮和尿素態氮）在兩種質地的土壤中的淋失量均是硝態氮肥尿素銨態氮肥，淋失的氮素主要為肥料氮。 -
But on the later condition the trend of accumulation turned to be stable in the w3 treatment ( vseawater / v pure water = 1 ) - in root zone soil, variation of sar value accorded with total salt accumulations and sometimes decreased at the treatment where the v seawater / v pure water > 1. contents of cl - and na + which were the main ions and leached obviously in 0 - 60cm soil were greatly influenced by rainfall, but the rainfall did not affected the contents of ca2 +, mg2 + and k + whose ability of leaching is worse than that of cl - and na + in the root zone soil obviously. the vertical distribution of salt ions in the 0 - 60cm soil were mainly affected by the ratio of v seawater / v pure water in the irrigation water on the condition of not enough rainfall, but on the cont
海水灌溉下，耕層土壤中鹽分含量受降雨量影響很大，足夠的降雨條件下，鹽分不會積累，降雨量較低時，鹽分積累明顯，但在50海水處理下趨于平衡狀態；耕層土壤sar值的變化情況和鹽分含量變化情況相一致，在灌溉水中海水濃度大於50時有所下降；土壤中主要鹽離子為cl ~ -和na ~ + ， 0 - 60cm土層內， na ~ + 、 cl ~ -明顯的向土壤底層遷移，其在土壤中的含量受降雨影響顯著，而ca ~ （ 2 + ） 、 mg ~ （ 2 + ）和k ~ +在土壤中遷移能力較低，其含量受降雨影響較小； 0 - 60cm層次土壤鹽分的縱向分佈在降雨量較低的條件下主要受灌溉水中海水濃度的影響，而在降雨充分的條件下，地面覆蓋程度成為重要的影響鹽分和水分脅迫下菊芋的生理響應及其海水灌溉研究因子之一。 -
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移規律室內模擬試驗研究，發現隨著土壤初始含水量的增加，相同入滲歷時內的累積入滲量和濕潤鋒都在增加。 -
And no3 - - n can be leached to soil layer below die wetting depth. the convection - dispersion equation with the retardation coefficient yield by method has been adopted to model nh4 - - n transport in saturated soil, simulation results are compared well with experimental results
基於批平衡得到nh _ 4 ~ + ? n的吸附延遲系數，利用對流一彌散方程模擬nh _ 4 ~ + ? n在飽和土壤中的遷移過程，模擬結果與試驗結果吻合較好。 -
Nitrate was leached from the soil when water application was started. irrigation, fertilizer and temperature strategy had a large effect on the temporal envelopment in nitrate leaching. the more the irrigating quota is
45mm灌水與30mm灌水相比15cm硝態氮含量明顯降低，而30 、 45cm土層含量相對增加，施肥量、溫度越高土壤各層中硝態氮含量越高。
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