| 磷肥对青饲玉米的效应 |
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| 引用本文： | 杜永芹.磷肥对青饲玉米的效应[J].上海交通大学学报(农业科学版),1992(2). |
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| 作者姓名： | 杜永芹 |
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| 作者单位： | 上海农科院作物所 上海201106 |
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| 摘 要： | 在亩施75kg 碳铵和7.5kg 钾肥的基础上,施用磷肥对玉米生长有明显的作用,能较好地提高玉米的干物重及产量。在亩施0～80kg 妇磷肥用量范围内,产量与磷肥用量呈抛物线回归,其肥效的回归方程为 y=2162.93+31.411x—O.246x~2,r=0.998,最高产量的磷肥用量为65.9kg/亩。在土壤有效磷不足(4.5ppm)的情况下,以亩施过磷酸钙60kg 效果为好。
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| 关 键 词： | 磷肥 青饲玉米 产量 |
THE EFFECT OF PHOSPHATE FERTILIZER ON FODDER CORN |
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| Du Yongqin.THE EFFECT OF PHOSPHATE FERTILIZER ON FODDER CORN[J].Journal of Shanghai Jiaotong University (Agricultural Science),1992(2). |
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| Authors: | Du Yongqin |
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| Abstract: | On the basis of using 75kg ammonium bicarbonate and 7.5kg potash fertilizer per mu, the effects of applying phosphate fertilizer on growing of maize,dry weight and yield of fod- der corn were significantly improved.In range of applying 0 to 80kg phoshate ferilizer per mu,the output and consumption of phosphate fertilizer showed regression of parabola,the regression equation of effect of phosphate fertilizer,as follow:Y=2162.93+ 31.411x-0.246x~2,r=0.988,when using 65.9kg phosphate fertilizer per mu,the yield reached the climax.It can get a good result to apply 60kg/mu superphospate when effection phosphate lacked in soil. |
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| Keywords: | Phosphate ferterlizer Fodder corn Out-put |
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