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澳洲坚果叶片氮含量并无明显的临界点，高产植株的施肥管理主要以经验性标准为依据。植株氮营养水平低，也能取得产量高质量好的坚果。本研究旨在确定植株产量与其叶片氮状况之间的关系。试验设置3种氮肥施用量：每株施尿素0．skg、1．skg和2．skg；5种施肥方案：①在4月份（初
There is no obvious critical point for nitrogen content in macadamia leaves. The fertilization management of high yielding plants is mainly based on empirical criteria. Plant nitrogen nutrition is low, but also to obtain high yield and good quality nuts. The purpose of this study was to determine the relationship between plant yield and leaf nitrogen status. Three types of nitrogen fertilizer were applied in experiment: 0 urea per plant. skg, 1. skg and 2. skg; 5 kinds of fertilization programs: ① in April (early