庆阳市果园土壤养分动态变化及施肥措施

通过对庆阳市苹果园土壤养分状况的变化分析表明:苹果园土壤有机质、全氮、碱解氮、速效磷的含量2006年较1980年均有所增加,分别增加2.36 g/kg、0.15 g/kg、8.3 mg/kg、2.8 mg/kg,速效钾含量2006年较1980年减少705 mg/kg.根据土壤肥力变化提出了保持土壤养分平衡,提高土壤肥力的培肥措施.

Dynamic Change of Soil Nutrient and Fertilization Measure in Apple Garden of Qingyang City

By analyzing the change of soil nutrient in apple garden of Qingyang city,the results indicated that soil organic substance,total nitrogen,alkali nitrogen and available phosphorus in 2006 increased 2.36 g/kg,0.15 g/kg,8.3 mg/kg,2.8 mg/kg respectively than in 1980,on the contrary available kalium decreased 7.5 mg/kg.According to the change trend,we advanced fertilization measure of keeping balance of soil nutrient and increasing soil fertility.