不同灌溉施肥方式对马铃薯产量和养分吸收的影响

作为世界第四大粮食作物，提高马铃薯产量和水肥资源的利用率，对于满足人们粮食需求和生态环境可持续发展意义重大。为了探索一种高效的马铃薯灌溉施肥的方法，通过田间试验，研究了不同灌溉方式（滴灌、微喷灌和大水漫灌）和施肥量(525、600、675、750 kg/hm2)对马铃薯产量和水肥资源利用的影响。结果表明，与传统处理相比，滴灌处理使提高马铃薯出苗成活率显著提高10%；在相同施肥的情况下，滴灌处理提高马铃薯产量和偏生产力；在不影响产量的前提下，滴灌处理达到了节水37%，节肥55%的效果。综上可见滴灌对提高马铃薯产量和资源利用率都有积极意义。

Effects of Different Fertigation Methods on Yield and Nutrient Uptake of Potato

As the fourth grain crop, it is important to improve the yield of potato and water and fertilizers resource use efficiency for meeting food demand and environmental sustainability. For exploring a way of efficient fertigation on potato, field plot trials were conducted to study the effects of different irrigation methods (drip irrigation, micro-irrigation and traditional irrigation) and different fertilizer rates (525, 600, 675, 750 kg/hm2) on potato yield and water use efficiency. The results showed that, drip irrigation significantly increase the seedling rate of potato from 85% of traditional irrigation treatment to 95%. Under the same amount of the fertilizer, drip irrigation increased potato yield and partial factor productivity of applied fertilizer. Compared to the traditional irrigation, drip irrigation saved 37% water and 55% fertilizer with the same yield. In conclusion, the drip irrigation is appropriate for increasing potato yield and improving the water use efficiency.