追施水溶肥对马铃薯植株氮磷钾含量及产量的影响

Effects of Topdressing Water Soluble Fertilizer on Yield and Nitrogen,Phosphorus and Potassium Contents in Potato Plants

水溶性肥是可以溶于水的一种新肥料,属于一种速效性肥料。为进一步探究追施水溶肥在马铃薯生产种植中的应用效果,以马铃薯品种尤金为试验材料,设基肥无追肥以及基肥追施6、12、18 kg·667 m^-2水溶肥4个处理,测定植株中的氮磷钾含量。结果表明:追施水溶肥提高了植株中全氮和全钾含量,且均在施肥量12 kg·667 m^-2时表现出明显增加。而对于植株的茎秆和叶片全磷含量影响不显著,根系中磷的含量在施肥量为18 kg·667 m^-2时表现显著高于对照。水溶肥的追施对块茎产量影响显著,施肥量18 kg·667 m^-2时产量最高,而施肥量为12 kg·667 m^-2时经济效益最高。

Water soluble fertilizer is a new kind of fertilizer which can be dissolved in water and belongs to a kind of quick acting fertilizer.In order to further explore the application effect of top dressing water-soluble fertilizer in potato production and planting,the potato variety Eugene was used as the experimental material,and the four treatments of no top dressing of basic fertilizer and top dressing of 6,12 and 18 kg·667 m^-2 water-soluble fertilizer were set up to determine the content of nitrogen,phosphorus and potassium in the plant.The results showed that the content of total nitrogen and total potassium in the plant increased with the application of water-soluble fertilizer,and both of them increased significantly at the application rate of 12 kg·667 m^-2.However,there was no significant effect on the total P content of stem and leaf,and the P content of root system was significantly higher than that of control when the fertilization was 18 kg·667 m^-2.The yield of tuber was the highest when applying 18 kg·667 m^-2 fertilizer,and the economic benefit was the highest when applying 12 kg·667 m^-2 fertilizer.