A pot experiment was carried out to evaluate the effects of supplying different rate of NH4+ - N/NO3- -N fertilizers on the growth, tubers yield and quality of potato under drip fertigation system. The results obtained were as follows: Under this experiment condition, biomasses of potato were no different among the five treatments in NH4+ - N/NO3- - N ratio. NH4+ - N fertilizer could improve N concentration and NO3- - N fertilizer could improve Ca concentration in potato tuber. The content of starch, dry matter and ash had no difference among the five treatments in NH4+ - N/NO3- - N ratio. There had no significant effects on increasing potato tubers yield among the different nitrogen fertilizer treatments, and the commodity rate was the highest in treatment SO/SO in NH4+ - N/NO3- - N ratio, the data as 92. 01%.%在盆栽试验条件下,以滴灌施肥方式探讨滴施不同铵硝比例氮肥对马铃薯生长、产量和品质的影响.研究结果表明:在本试验条件下,滴施不同铵硝比例氮肥对马铃薯植株生物量的积累差异不显著；滴施铵态氮肥有利于提高马铃薯块茎中N的浓度,而滴施硝态氮肥有利于提高马铃薯块茎中Ca的浓度；滴施不同铵硝比例氮肥处理马铃薯的淀粉含量、干物质含量、灰分含量等均差异不显著,块茎产量也差异不显著,但马铃薯商品薯比例以滴施铵硝比例为50/50氮肥处理的最高,达到92.01％.
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