DRIS诊断法在柑桔施肥中应用研究
Aplication of DRIS on Applying Fertilizer to Citrus
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摘要: 1991~1993年对雪柑、福桔的春梢营养枝叶片测定N、P、K、Ca、Mg,计算DRIS指数,观察诸营养元素的平衡关系,结果表明丘陵红壤山地果园严重缺Ca、Mg.通过增施Ca、Mg肥,观察其对叶片营养元素含量、产量及果实性状的影响。Abstract: From 1991 to 1993, contents of N、P、K, Ca and Mg in the leaves of spring shoots in xue-gan and Fuju were analysed, and the index of DRIS (Diagnosis and Recommendation Integrated Sys-tem) was determinated. The equilibrium of such elements was investigated.The index showed that the orchard in hilly land was deficient in Ca and Mg. Effects of applying Ca and Mg ferilizer on thc contents of nutrition elements in the leaf.yield and fruit character were also investigated.
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Key words:
- DRIS /
- Citrus /
- Applying fertilizer
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