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选择吉林省具有代表性的9个站点,对吉林省大田土壤的氨态氮、速效单质磷、速效单质钾、PH值和有机质进行了观测。结果表明,我省各地土壤氨态氮和速效单质磷的含量,均是优质地段>中等地段>劣质地段;同一地块不同层次表现为从上到下(10～30cm)养分含量逐渐减少,表层养分含量明显高于底层,即10cm氮、磷含量>20cm氮、磷含量>30cm氮、磷含量,而土壤钾含量与土质优劣无明显关系,不同深度的钾含量变化也不明显;白城、松原土壤呈碱性,永吉呈酸性,其它测站呈中性;同时分析了播种前和收获后土壤养分变化、PH值变化及养分丰缺情况。
Nine representative sites in Jilin Province were selected to study the contents of ammonia nitrogen, available elemental phosphorus, available elemental K, pH value and organic matter in the soil of Jilin Province. The results showed that the contents of ammonia nitrogen and available elemental phosphorus in the soil were high quality area> middle quality area> inferior quality area. The nutrient content decreased from top to bottom (10 ~ 30cm) The contents of nitrogen and phosphorus> 30cm nitrogen and phosphorus content> 30cm, while the content of potassium in soil had no significant relationship with the soil quality, and the potassium content in different depths did not change obviously. Songyuan soil was alkaline, Yongji acidic, other stations were neutral; at the same time before and after sowing soil nutrient changes, changes in pH value and nutrient abundance situation.