【摘 要】
：
研究控释氮肥对苹果产量和果树氮含量的影响,结合已有的实践经验,得出结论:控释氮肥的释放分为逐渐增大、释放高峰、逐渐减小3个阶段;控释氮肥,如方法得当,可增加叶片和枝条
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研究控释氮肥对苹果产量和果树氮含量的影响,结合已有的实践经验,得出结论:控释氮肥的释放分为逐渐增大、释放高峰、逐渐减小3个阶段;控释氮肥,如方法得当,可增加叶片和枝条中氮素含量,提高果实产量及糖、钙、维生素C含量,降低氮含量。
The effect of controlled release nitrogen fertilizer on apple yield and fruit nitrogen content was studied. Based on the existing practical experience, it was concluded that the release of controlled release nitrogen fertilizer was gradually increased, peaked and gradually decreased in three stages. If the method is proper, the content of nitrogen in leaves and shoots can be increased, the fruit yield and the content of sugar, calcium and vitamin C can be increased and the nitrogen content can be reduced.
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