| 尹 梅，王贵宝，洪丽芳，付利波，陈 华，陈检锋，任石所，张勤斌，黄 惠，苏 帆.磷钾肥对云南旱作马铃薯产量和养分吸收的影响[J].干旱地区农业研究,2015,33(1):91~97 |
| 磷钾肥对云南旱作马铃薯产量和养分吸收的影响 |
| Effect of phosphorus, potassium levels on yield and nutrition absorption of upland potato in Yunnan |
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| DOI：10.16302/j.cnki.1000-7601.2015.01.015 |
| 中文关键词: 马铃薯 磷钾水平 肥料利用率 农学利用率 产量 |
| 英文关键词:potato phosphorus and potassium levels fertilizer utilization efficiency agronomic efficiency yield |
| 基金项目:公益性行业科研专项经费项目(201203013)；国际植物营养所(IPNI)项目、国家科技支撑计划项目(2012BAD40B01) |
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| 中文摘要: |
| 在云南省曲靖地区的低肥力和中高肥力试验地分别开展旱作马铃薯的田间小区试验,研究磷钾施用量对马铃薯生物量、养分利用、产量和经济效益的影响。结果表明：相同施肥量的条件下，中高肥力试验地的东山组马铃薯产量远高于低肥力的越州组，产量相差10 305.00～20 140.20 kg·hm-2；越州组NP2K3(N,150 kg·hm-2; P2O5,90 kg·hm-2; K2O, 405 kg·hm-2)处理产量产值最高，NP2K1(N,150 kg·hm-2; P2O5,90 kg·hm-2; K2O, 135 kg·hm-2)处理净收益最高； 东山组NP2K2(N,150 kg·hm-2; P2O5,90 kg·hm-2; K2O, 270 kg·hm-2)处理产量、产值及净收益均是最高； 两组试验的马铃薯干重变化趋势相似，NP2K2处理的干重积累量较多，无钾无磷处理干重积累少；马铃薯体内累积K最多，其次为N，最后为P， NPK养分吸收积累的高峰期在马铃薯块茎膨大期到淀粉积累期； 东山组的马铃薯PK利用效率明显高于越州组。NP1K2(N,150 kg·hm-2; P2O5,45 kg·hm-2; K2O, 270 kg·hm-2)处理的P肥利用率和P素农学效率较高，P肥利用率和P素农学效率都有随施P量增加而降低的趋势。NP2K1处理的K肥利用率和K素农学效率最高，K肥利用率和K素农学效率均有随施K量增加而降低的趋势。 |
| 英文摘要: |
| The field experiments have been set up on low and middle-high fertility farmland in Yunnan Qujing, with the aims of investigating the effects of phosphorus, potassium levels on biomass, yield and fertilizer utilization rate of upland potato. The results indicated that the yield of potato for middle-high fertility land in Dongshan was higher than that for low fertility land in Yuezhou, being 10 305.00～20 140.20 kg·hm-2 when the same fertilizer rate was applied. In Yuezhou, yield with NP2K3(N,150 kg·hm-2; P2O5,90 kg·hm-2; K2O, 405 kg·hm-2) treatment and income with NP2K1(N,150 kg·hm-2; P2O5,90 kg·hm-2; K2O, 135 kg·hm-2) treatment are the highest. In Dongshan, yield and income with NP2K2(N,150 kg·hm-2; P2O5,90 kg·hm-2; K2O, 270 kg·hm-2) treatment are the highest. The change trends of potato dry biomass for both field experiments were similar. Potato dry biomass with NP2K2 treatment was higher than the others, and without P or K treatment was lower than the others. The amount of K accumulation was the highest in potato, followed by N and P. The high rate of NPK accumulation of potato occurred from tuber growth period to starch accumulation period. PK efficiency of potato in Dongshan was considerably higher than that in Yuezhou. P utilization rate and agronomic P efficiency of potato with NP1K2(N,150 kg·hm-2; P2O5,45 kg·hm-2; K2O, 270 kg·hm-2) were higher than those of other treatments. P utilization rate and agronomic P efficiency of potato decreased with increasing of P application. K utilization rate and agronomic K efficiency of potato with NP2K1 were higher than those of other treatments. Kutilization rate and agronomic K efficiency of potato decreased with increasing of K application. |
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