【摘要】 通过室内培育和柑桔田间试验 ,研究了控释肥的释氮速率及对柑桔的效应。结果表明 ,控释肥的氮素释放速率缓慢 ,在柑桔上施用增产效果显著 ,且可提高果实品质。与普通肥相比 ,施用控释肥可增产 12 %～ 2 6% ,并使单果重增加 ,果形大小较匀称 ,果实中可溶性固形物、总糖及还原糖含量增加 ,糖酸比提高 ,Vc含量也略有增加。两种控释肥中 ,控II肥的效果优于控I肥。更多还原

【Abstract】 Laboratory and field experiments were carried out for investigating the rate of nitrogen release and the effect of controlled release fertilizer (CRF) on citrus. The result showed that the nitrogen release rate of CRF was slower than that of normal compound fertilizer. Compared with normal compound fertilizer, CRF applied in citrus could increase yield by 12%-26%,improve fruit shape, and increase fruit weight, the content of solubility solid matter, total sugar,reductive sugar and the ratio of sugars to acids. The content of Vc in fruit with the treatment of CRF was close to or more than that with the treatment of normal compound fertilizer. CRF II was more suitable than CRF I in citrus.更多还原