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Chinese Agricultural Science Bulletin ›› 2019, Vol. 35 ›› Issue (9): 109-114.doi: 10.11924/j.issn.1000-6850.casb17090146

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Nutrient Input Affects Soil Nutrients in Pinggu Peach Orchards

  

  • Received:2017-09-27 Revised:2017-11-09 Accepted:2017-12-22 Online:2019-03-26 Published:2019-03-26

Abstract: In 2016, 101 peaches in Pinggu District were studied, and the status of fertilization and its effect on soil nutrient were investigated. The results showed that the organic fertilizer investigated in peach orchards was mainly composed of chicken manure, sheep manure, pig manure and cow dung, while the chemical fertilizer is mainly compound fertilizer or NPK with the application. In 2016 total N, total P2O5 and total K2O inputs is 1.6 times, 1.6 times and 1.8 times higher than in 2006.Due to the excessive nutrient input in peach orchards for years. in 2006, the contents of soil organic matter, total nitrogen, available nitrogen, available phosphorus and available potassium in peach orchards were significantly higher than those in 2006 or the second soil survey in 1981.According to the survey results, the change trend of average alkali nitrogen content in soil was not obvious as nitrogen fertilizer was applied in the soil, the average effective phosphorus content increased significantly as phosphate fertilizer was applied in the soil, and the content of available potassium in soil increased first and then decreased as the potash input was increased.The average available N content in the soil with the application of nitrogen fertilizer increased significantly with the increase of the amount of potassium fertilizer. The content of available potassium in the soil was the highest Rising trend after falling. The results also showed that the nitrogen surplus of Pinggu soil was 444.6 kg N / hm2, and crop nitrogen absorption / nitrogen application accounted for only 45%; phosphorus surplus of Pinggu soil was 516.6 kg N / hm2, and crop phosphorus absorption / phosphorus application accounted for only 22%; thus it can be seen, the nitrogen and phosphorus nutrient surpluses in peach orchards have resulted in increased risk of soil nitrogen and phosphorus in orchard soils.Therefore, peach orchards are to carry out a reasonable nutrient management to ensure the formation of production and quality, and the sustainable development of peach orchards.