关键词: 黄淮海平原, 沙地, 土壤, 理化性状

Abstract: The author selected Yanjin station as an example to research the differences of sandy land soil properties under different development and exploitation in Huang Huai Hai Plain. The experiment consisted of six treatments: (1) Farmland: Sandy waste land formerly, afterwards through a series of ameliorating measures, such as applying organic and chemical fertilizers, culturing leguminous forage or crop, and avoiding continuous cropping, etc.. (2) Orchard land: Sandy waste land formerly, and ameliorated with the same measures as farmland. (3) Closed dune:let it fertilize naturally. (4) Developed sand ridge: predatory developing pattern. (5) Predatorily used farmland. (6) Bare sandy waste land. After 7~8 years, comparing with the content in bare sandy waste land the fine grain contents in the above (1), (2), (3) lands increased by 9~16.64 times, physical clay by 1.17~3.67 times, soil organic matter by 8.4~12.6 times, total N by 3.6~5.25 times, total P by 1.52~2.19 times, alkaline hydrolysising N by 2.15~3.02 times, fast effective P by 4~9.15 times, and fast effective K by 1.36~2.54 times.

Key words: Huang Huai Hai Plain, sandy land, soil, physical and chemical properties