彭阳县马铃薯氮磷钾养分平衡定位试验研究  

Study on Experiment of NPK Nutrient Balance Positioning for Potatoes in Pengyang County

作　　者：火勇[1] 

机构地区：[1]宁夏回族自治区彭阳县农业技术推广服务中心,宁夏彭阳756500

出　　处：《现代农业科技》2011年第15期100-101,103,共3页Modern Agricultural Science and Technology

基　　金：农业部财政支农项目"测土配方施肥"

摘　　要：通过田间试验设计,建立了宁夏南部山区马铃薯施肥量与产量数学模型,并进行了检验,确定了模型的可靠性,马铃薯施磷肥与钾肥、不施氮肥减产减收,连作时施纯氮12 kg/666.7 m2、五氧化二磷8.25 kg/666.7 m2、氧化钾7.32 kg/666.7 m2为最优经济施肥量,施纯氮12 kg/666.7 m2、五氧化二磷8.69 kg/666.7 m2、氧化钾8.02 kg/666.7 m2为最高施肥量,施五氧化二磷3~6 kg/666.7 m2、氧化钾0~3 kg/666.7 m2范围内产量效益最高。A field experiment was designed to establish potato fertilizer and yield model in the mountainous area of southern Ningxia,and tests were conducted to determine the reliability of the models.When Potassium fertilizer,phosphorus fertilizer was employed and nitrogen fertilizer was not,the potato production reduced.the optimal economic amount of fertilizetion in cropping was N 12 kg/666.7 m2,P2O5 8.25 kg/666.7 m2,K2O 7.32 kg/666.7 m2,the highest amount of fertilization was N 12 kg/666.7 m2,P2O5 8.69 kg/666.7 m2,K2O 8.02 kg/666.7 m2.The yield benefit was highest when the fertilization amount was P2O5 3～6 kg/666.7 m2,K2O 0～3 kg/666.7 m2.

关 键 词：马铃薯 氮磷钾养分 平衡定位 宁夏彭阳 

分 类 号：S532.062[农业科学—作物学] S147.2