盐化潮土中硫酸钾对玉米产量及氮钾交互作用的影响

基金项目: 国家自然科学基金和中国科学院院长基金资助项目

The influences of potassium sulfate on maize yield and interaction of nitrogen and potassium

摘要: 通过田间试验探讨了轻度盐渍化潮土中施用硫酸钾对夏玉米干物质产量及氮钾养分吸收和再利用的影响。在速效钾含量较高的供试土壤中，施钾对高产夏玉米具有明显的增产效果和促进植物对氮钾的吸收，但明显降低了生长后期植物体中钾和氮的再循环率。
- 轻度盐渍化潮土 /
- 硫酸钾 /
- 夏玉米 /
- 干物质产量
Abstract: Field experiment was carried out to study the effects of K₂SO₄ application on maize yield,biomass,N and K uptake and their re-use in slightly salinized Chao soil.The results showed that for the tested soil with high available K content, K supply greatly increased the output of summer corn and improved N and K uptake by the plants,but reduced the recycling rate of N and K in the plants significantly at the later growth stage.
- Slightly salinized Chao soil /
- Potassium sulfate /
- Maize /
- Biomass