黄淮海平原沙地不同治理利用措施下土壤性质的差异

Sandy Land Soil Properties Under Different Development and Exploitation in Huang Huai Hai Plain

延津站经过７～８ａ改造后，试区内的农业用地、果园用地、封育沙垄地较试区外未封育裸露沙垄地，粉粒含量增加９～１６．６４倍，物理性粘粒含量增加１．１７～３．６７倍，土壤有机质含量增加８．４～１２．６倍，全Ｎ含量增加３．６～５．２５倍，全Ｐ含量增加１．５２～２．１９倍，碱解Ｎ含量增加２．１５～３．０２倍，速效Ｐ含量增加４～９．１５倍，速效Ｋ含量增加１．３６～２．５４倍。同时，在土壤粒度、有机质和养分含量等方面也都有不同程度的提高。结果表明，沙地采用综合开发治理技术是沙地发展农业生产的有效措施，为黄淮海平原沙地农业开发提供了重要依据。

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.