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当前位置: 首页 > 文章 > 施氮量对马铃薯磷钾利用和土壤磷钾含量的影响 湖北农业科学 2016,55 (15) 3842-3845
Position: Home > Articles > Effects of Nitrogen Application Rates on Winter Potato Phosphorus, Potassium Utilization and Soil Phosphorus, Potassium Content Hubei Agricultural Sciences 2016,55 (15) 3842-3845

施氮量对马铃薯磷钾利用和土壤磷钾含量的影响

作  者：
韦剑锋;宋书会;韦冬萍;熊建文;梁和
单  位：
广西大学农学院;广西科技大学鹿山学院
关键词：
马铃薯(Solanum tuberosum L.);施氮量;土壤;磷素;钾素
摘  要：
为了提高肥料利用效率,采用田间试验方法,在基施等量磷肥(P2O5150 kg/hm2)和钾肥(K2O 360 kg/hm2)条件下,研究施氮量(0、80、160、240 kg/hm2)对马铃薯(Solanum tuberosum L.)费乌瑞它磷钾利用和土壤磷钾含量变化的影响。结果表明,马铃薯干物质、全磷及全钾积累总量随施氮量的增加而递增,但施氮量达160 kg/hm2以上时再增施氮肥增加不显著;增加施氮量,磷肥和钾肥的肥料效率略呈上升趋势,但磷肥和钾肥的收获指数、经济效率及生理效率略呈下降趋势。马铃薯收获后,种植地土壤尤其是0~30 cm土层的速效磷和速效钾含量显著增加,但各土层速效磷和速效钾含量随施氮量的增加呈递减趋势。施氮量还影响干物质、全磷及全钾在马铃薯各器官的分配。因此,本研究条件下,N、P2O5、K2O施用量可在160、150、360 kg/hm2基础上适当减量。
译  名：
Effects of Nitrogen Application Rates on Winter Potato Phosphorus, Potassium Utilization and Soil Phosphorus, Potassium Content
作  者：
WEI Jian-feng;SONG Shu-hui;WEI Dong-ping;XIONG Jian-wen;LIANG He;Lushan College of Guangxi University Science and Technology;Agricultural College of Guangxi University;
关键词：
potato(Solanum tuberosum L;;);;nitrogen application rate;;soil;;phosphorus;;potassium
摘  要：
In order to improve fertilizer utilization-efficiency,a field experiment was conducted with equal amount of phosphorus fertilizer(P_2O_5 150 kg / hm~2) and potassium fertilizer(K_2O 360 kg / hm~2) application, and the effects of N application rates(0,80,160,240 kg / hm~2) on the phosphorus,potassium use efficiency of potato cultivar Favorite and the change of soil phosphorus, potassium content of soil were investigated. The results showed that the total dry matter,total P and total K accumulation amount of potato were increased significantly with the N applied, but there were no significant difference between application 160 kg / hm~2 and application 240 kg / hm~2. The fertilizer efficiency of phosphorus and potassium was increased with the increase of N application rates, but the harvest index, economical efficiency rate,physiology use efficiency of phosphorus fertilizer and potassium fertilizer were decreased slightly. After potato harvest, the content of available phosphorus and available potassium in 0 ~30 cm soil layer increased significantly, but the content of available phosphorus and available potassium in soil profile were decreased with the increase of N application rates. The N application rates had influence on dry matter, total P and total K distribution in potato organs. Therefore,the N,P_2O_5,K_2 O application amount could be reduced appropriately on the basis of 160 kg / hm~2,150 kg / hm~2,360 kg / hm~2 in the present study.

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