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魔芋灰分缓释肥的养分释放特性 被引量:1
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作者 向天勇 吴永尧 肖蓉 《浙江农业科学》 2010年第1期151-155,共5页
以魔芋加工废弃物魔芋灰分和凹凸土为原料,控制总用量在6%左右,魔芋灰分/凹凸土比例为1/1、1/2、1/3,与KH2PO4、KCl(P2O5/K2O为11/18)充分混匀压片制成缓释肥。120 d时,土壤养分累积释放量在72%-87%,大量释放时段集中在60-120 d,符合... 以魔芋加工废弃物魔芋灰分和凹凸土为原料,控制总用量在6%左右,魔芋灰分/凹凸土比例为1/1、1/2、1/3,与KH2PO4、KCl(P2O5/K2O为11/18)充分混匀压片制成缓释肥。120 d时,土壤养分累积释放量在72%-87%,大量释放时段集中在60-120 d,符合作物的常规需肥规律;灰分中葡甘聚糖通过吸水溶胀实现对肥料养分的包埋吸附,10%用量以内,其用量与包埋吸附能力呈正相关;凹凸土可有效延长缓释肥药片的崩解时间,在旱地土壤上,还可以通过空间阻断增强药片的缓释能力。 展开更多
关键词 缓释肥 葡甘聚糖 魔芋灰分
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Effects of Nitrogen, Phosphate and Potassium Fertilizers on Soft Rot of Konjac Based on Grey Correlation Analysis
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作者 杨秀莲 张云 +3 位作者 张晋恒 梁艳丽 谢世清 赵庆云 《Agricultural Science & Technology》 CAS 2014年第10期1710-1713,共4页
[Objective] The effects of different application amounts of nitrogen, phos-phate and potassium fertilizers on soft rot of konjac were investigated in this study. [Method] The grey correlation analysis was adopted to e... [Objective] The effects of different application amounts of nitrogen, phos-phate and potassium fertilizers on soft rot of konjac were investigated in this study. [Method] The grey correlation analysis was adopted to evaluate the correlation be-tween the application amount of nitrogen, phosphate and potassium fertilizers and the occurrence of soft rot of konjac. [Result] The excessive application of nitrogen fertilizer would induce the occurrence of soft rot of konjac, but the application of potassium fertilizer had a good control effect on soft rot. [Conclusion] The applica-tion amount of nitrogen fertilizer should be control ed reasonably in the planting of konjac, but the application amount of phosphate and potassium fertilizer could be in-creased to some extent, reducing the occurrence of soft rot of konjac. 展开更多
关键词 Grey correlation analysis KONJAC Nitrogen fertilizer Phosphate fertilizer Potassium fertilizer Soft rot
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