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试验旨在探索宁夏南部半干旱半湿润地区马铃薯覆膜种植对氮、磷、钾三要素的搭配要求,掌握其最优的施肥技术,用以指导大面积示范推广和大田生产。结果表明:在试验所代表的半干旱、半湿润地区覆膜种植马铃薯,以种植宁薯12号品种为例,在基础地力肥沃、水分供应充足情况下,磷肥施用量对产量影响最大,施用磷肥是夺取高产的关键,以施纯磷10kg/667m2为宜,同时,还应依实际情况配合施入适量钾肥(纯钾15kg/667m2左右);肥料三要素对马铃薯干物质含量的影响不是很大。
The purpose of this experiment is to explore the matching requirements of three factors of nitrogen, phosphorus and potassium in semi-arid and semi-humid areas of southern Ningxia and to master the optimal fertilization technology to guide large area demonstration and field production. The results showed that in the semi-arid and semi-humid areas represented by the experiment, potato was planted by film mulching. Taking Ningshu 12 as an example, under the conditions of fertile soil and sufficient water supply, the amount of P fertilizer had the greatest impact on the yield. Is the key to capture high yield, to apply pure phosphorus 10kg / 667m2 is appropriate, but also should be based on the actual situation with the application of appropriate amount of potash (pure potassium 15kg / 667m2 or so); fertilizer three factors on potato dry matter content is not significant.