期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：300
期号：2
页码：1-6
DOI：10.1088/1755-1315/300/2/022120
出版社：IOP Publishing
摘要：In order to explore soil physical-chemical properties and water quality in Bailiang town, Heyang county of Shaanxi Province, the soil physical-chemical properties of newly increased cultivated land, the water heavy metal contents of chromium, copper, zinc, arsenic, selenium, cadmium, mercury and lead of Yellow River water and groundwater in the project area were measured. The results showed that the pH value, total salt content and heavy metal content of the Yellow River and groundwater were all in line with the farmland irrigation water quality Standard, which could guarantee irrigation use. The type of soil in the 0~30 cm was sandy loam, the bulk density of 0~30 cm soil layer was 1.52 g cm−3, and the saturated hydraulic conductivity was 229.41 cm d−1, which could meet the needs of planting soil quality requirements, but sandy loam soil with large saturated water conductivity was easy to leak water and fertilizer. Meanwhile, the content of exchangeable calcium of 0~30 cm soil layer was in a very rich state(38.6~90.1 cmol kg -1), and the content of available potassium (36~128 mg kg−1)and effective boron(0.56~0.89 mg kg−1)were moderate, the content of organic matter(1.06~2.65 g kg−1), total nitrogen(0.18~0.33 g kg−1), available phosphorus(3.2~8.4 mg kg−1) and available silicon content(41.0~68.6 mg kg−1)were in a state of lack. These results indicate that the organic fertilizer, green manure, straw and small amounts of fertilizer could be used to increase the content of organic matter, and other nutrient elements in the cultivated layer. It was recommended to design the loess tillage layer and plow pan layer, which played the role of water retention and fertilizer retention, and was suitable for the growth of aquatic crops.
