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滴灌施肥对红毛丹产量、养分吸收利用和土壤肥力的影响

Journal of Irrigation and Drainage(2016)

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Abstract
通过田间小区试验,探讨了不施肥、常规施肥和滴灌施肥3种不同灌溉施肥方式对红毛丹产量、养分吸收利用及土壤肥力的影响.结果表明:滴灌施肥下红毛丹产量最高(5 570.4 kg/hm2),较常规施肥和不施肥分别增产24.84%和149.34%.滴管施肥条件下,植株成熟叶含N、P、K量显著提高,氮、磷、钾肥农学效率及肥料偏生产力分别为33.86、48.06、27.69、19.31 kg/kg,较常规施肥分别提高170.23%、91.70%、65.71%、73.03%.且土壤有机质、pH值较FP处理显著提高,增幅分别为4.7%、2.4%,矿质养分维持稳定供应.滴灌施肥对提高红毛丹产量和养分资源利用率都有积极意义.
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