salt-affected soil 中文意思是什麼
salt-affected soil
解釋
鹽漬土壤-
Characteristics of humus in maturing salt - affected soil
鹽漬土熟化過程中腐殖質特性的研究 -
The characteristics of soil elements in salt - affected soil area in quzhou, hebei
河北曲周鹽漬土區土壤元素特徵 -
Chemical characteristics of groundwater in salt - affected soil area in quzhou, hebei
河北曲周鹽漬土區的地下水化學特徵 -
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。 -
Desalting experiment of intensely salt - affected soil by planting rice in the da ' an paleochannel of the songnen plain
長期定位施肥殘留養分對作物產量及土壤化學性質的影響 -
In the profile of aeration zone, the matrix potential of soil water and salt capacity in the soil can be affected by the lithology
即含水量大的地方的水土勢和土壤中總的含鹽量也大,含水量小的地方水土勢和土壤中總的含鹽量也小。 -
The plants growing on the land surface can be affected by the occurrence and movement of water and salt in the aeration zone. in order to understand the characteristics of occurrence of water and salt in the aeration zone, we installed three tensionmeter systems. which includes 35 ceramic cups, in the soil of ejnqi oasis on the downstream of heihe river in inner mongolia province. the moisture potential distribution in aeration zone was observed, and the samples of water and soil were collected along the heihe river
為了了解綠洲包氣帶水分、鹽份的分佈特徵,我們在黑河下游的內蒙古額濟納旗綠洲安裝了3組35支負壓計,觀測包氣帶中的水土勢,並沿黑河河谷從下游的額濟納旗到中游的張掖採集土樣和水樣,測試土壤的易溶鹽和潛水的化學成分,從包氣帶中水土勢和鹽份兩個方面來研究乾旱地區水分和鹽份在包氣帶中賦存和運移規律。
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