黄土高原地区南瓜优质施肥模式研究  

Study on optimum fertilization model of Pumpkin quality in loess plateau

作　　者：高静[1] 梁银丽[1] 陈甲瑞[1] 熊亚梅[1] 周茂娟[1] 贺丽娜[1] 

机构地区：[1]西北农林科技大学,陕西杨凌712100

出　　处：《干旱地区农业研究》2008年第3期86-89,108,共5页Agricultural Research in the Arid Areas

基　　金：中国科学院知识创新项目(KZCX2-XB2-05-01);国家科技支撑项目(2006BAD09B07);中国科学院水土保持研究所领域前沿项目(SW04302)

摘　　要：安塞试验站2005-2006连续两年采用N、P、K三因素最优设计，田试不同施肥量对南瓜Vc和干物质两项营养品质的影响，探讨南瓜优质的N、P、K肥效反应模式。结果表明，N肥对南瓜Vc含量的影响最大，K肥对干物质含量的影响最大，N与P交互作用和N与K交互作用对南瓜Vc、干物质含量影响显著。筛选出南瓜优质的较佳施肥量为：施氮90～95kg／hm^2，施磷75～80kg／hm^2，施钾25～30kg／hm^2。N：P2O5：K2O=1．00：0．83：0．28.The experiment for optimum design of N, P and K fertilization model was conducted to study the influence of different fertilization rate to pumpkin dry matter quality and Vc content. The results showed that N had significant effect on Vc content of pumpkin, and P had significant effect on the content of dry matter, while the influence of N and P, N and K correlation to pumpkin dry matter and Vc content was remarkable. The optimum amount of N, P, and K fertilization was nitrogen N 90-95 kg/hm^2, phosphorous P2O5 75 - 80 kg/hm^2 and potassium 25 - 30 kg/hm^2. The N ： P2O5 ： K proportion was 1 ： 0.83 ： 0.28 .

关 键 词：南瓜 氮 磷 钾 品质 施肥模式 

分 类 号：S642.1[农业科学—蔬菜学]