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The nitrogen, phosphorus and potassium requirements of black spruce and red pine in the early seedling stage.

机译：黑云杉和赤松苗期初期的氮，磷，钾需求量。

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作者
Hallett, Ronald Dean.;
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作者单位

University of New Brunswick (Canada).;

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授予单位 University of New Brunswick (Canada).;
学科 Engineering General.
学位 M.Sc.F.
年度 1970
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原文格式 PDF
正文语种 eng
中图分类工程基础科学;
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入库时间 2022-08-17 11:51:59

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机译：图1：土壤有机物质（SOM），总氮（TN），总磷（TP），可用磷（AP），可用钾（AK），可获得的钾（RK）和pH值的百分比，与对照相比（= 0 ％）在玉米幼苗（a）和连接（b）阶段。

The nitrogen, phosphorus and potassium requirements of black spruce and red pine in the early seedling stage.

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