龙眼施用长效氮肥的效应研究

Effect of slow-release Nitrogenous Fertilizers Application in Longan

龙眼幼年树和龙眼幼龄结果树施用涂层尿素、长效尿素、长效碳铵等 3个长效氮肥品种和普通尿素肥效对比试验 ,结果表明 ,涂层尿素、长效尿素对龙眼幼年树生长量有不同程度的增加 ;涂层尿素对提高龙眼幼龄结果树秋梢生长量和果实产量有正效应 ;长效氮肥对龙眼果实品质无不良影响 。

Common urea and slowrelease nitrogenous fertilizers including coatedurea, slowrelease urea and slowrelease ammonium bicarbonate were fertilized to longan in field experiments. The results were summarized as follows: The growth increment to some extent of young plant longan by fertilization of coatedurea and slowrelease urea increased. Coatedurea application could promote the growth of autumn shoots and the fruit yield of young bearing longan tree. The slowrelease nitrogenous fertilizers had no significantly effect on the fruit quality and coatedurea application could improve the nitrogen content of the leaves.