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设施农业在我国农业生产中已经占有愈加重要的地位。由于设施栽培中大量施用化肥使土壤出现了明显的酸化趋势,盐渍化加重,磷等营养元素明显富集;而钙等中、微量元素肥料施用较少,氮磷钾与钙等中微量元素的养分平衡受到影响。基于此,主要介绍土壤中磷素和钙素的现有状况。自改革开放以来,我国设施农业取得了长足的发展,尽管我国设
Facility agriculture has occupied an increasingly important position in China’s agricultural production. Due to the large amount of chemical fertilizers applied in the cultivation, the soil showed obvious acidification tendency, the salinization was aggravated, and phosphorus and other nutrients were obviously enriched. However, the application of trace element fertilizers was less, the contents of nitrogen, phosphorus, potassium and calcium and other trace elements The nutrient balance is affected. Based on this, we mainly introduce the current status of phosphorus and calcium in soil. Since the reform and opening up, the development of China’s facility agriculture has made great strides, although our country has set up