雪峰蜜桔"2+X"氮肥总量控制试验

Qiong ZHANG,Peng-da DENG,Tian-tian LIU,Li-min SHEN,Jing-ni DONG,Ying CHEN, Jian-jun CHEN,Jun TANG

Hunan Agricultural Sciences（2019）

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Abstract

为了探索雪峰蜜桔科学施肥方法、优化柑橘施肥方案,通过"2+X"氮肥总量控制试验,研究在不同氮量配比的施肥情况下对雪峰蜜桔产量和经济效益的影响.结果表明:与无氮区相比,常规施肥区、优化施肥区、70％优化氮区和130％优化氮区增产显著,分别增产658.0、720.4、595.0和628.0 kg/667m2,增产率分别达47.6％、52.1％、43.0％和45.4％;从肥料的产投比来看,优化施肥区与70％优化氮区效益最好.分析可得氮肥投入以优化氮量较好,过多和过少都会影响雪峰蜜桔的产量和效益.

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