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甘薯不同磷肥用量的肥效 被引量:4

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摘要 开展了甘薯不同磷肥用量的肥效研究。结果表明:在氮钾肥施足的情况下,甘薯增施磷肥可提高甘薯结薯数、单薯重和大中薯比例,从而提高产量和效益,但施用量必须因地力、氮钾肥施用量进行合理配比,才能真正达到降低成本,提高产量,减轻污染,增产增收的最佳效果,磷肥施用量过少或过多均不能达到预期目的,单产鲜薯4.5万kg/hm2以施过磷酸钙375~562.5 kg/hm2为宜。
作者 陈金英
出处 《农技服务》 2010年第8期993-994,共2页 AGRICULTURAL TECHNOLOGY SERVICE
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