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应用GPS和GIS定位技术,对黑龙江省松嫩平原和三江平粮食主产区土壤按20 km×20 km的网格进行取样,对土壤速效养分状况与分布特征进行了研究。结果表明,黑龙江省松嫩平原和三江平原粮食主产区土壤缺氮面积占87.9%,缺磷面积占46.1%,缺钾面积占72.4%,缺硫面积占86.1%,缺锌面积占61.3%,缺硼面积占43.6%。应采用松嫩平原地区重点补磷和锌,三江平原地区重点补硼,中南部地区重点补氮磷钾和全面补硫的施肥策略。
By using GPS and GIS positioning technology, the 20 km × 20 km grids were sampled from the main producing areas of Songnen Plain and Sanjiang Plain in Heilongjiang Province, and the available nutrient status and distribution characteristics were studied. The results showed that 87.4% of the soil nitrogen deficiency area, 46.1% of the phosphorus deficiency area, 72.4% of the potassium deficiency area, 86.1% of the sulfur deficiency area and 61.3% of the zinc deficiency area were occupied in the major grain-producing areas of Songnen Plain and Sanjiang Plain in Heilongjiang Province. , Boron area accounted for 43.6%. Key phosphorus and zinc should be used in the Songnen Plains region, the key boron in the Sanjiang Plain, central and southern parts of key nitrogen, phosphorus and potassium fertilizers and comprehensive sulfur fertilization strategy.