论文部分内容阅读
[目的]研究钾、钙、钠交互作用对蔬菜生长和养分吸收的影响。[方法]通过盆栽试验共11处理研究钾、钙、钠交互作用对小白菜生长和钾、钙养分吸收效果的影响。[结果]施用钾肥或钙、钾配施均能提高小白菜对钾、钙的吸收,钙、钾之间存在交互作用。适量的钙对小白菜吸收钾素产生促进作用,过量的钙则产生抑制作用。钙、钾用量分别0.33、0.67g/盆(Ca2K3处理)时效果最佳,可显著提高小白菜干物质积累量和钙、钾吸收量。[结论]在土壤钠水平较低时,施用一定量的钙能有效缓解钠对小白菜的胁迫作用。
[Objective] The research aimed to study the effects of the interaction of potassium, calcium and sodium on the growth and nutrient absorption of vegetables. [Method] The effects of potassium, calcium and sodium on the growth and the absorption of potassium and calcium in Brassica chinensis by pot experiment were studied. [Result] The application of potassium fertilizer or the combination of calcium and potassium could increase the absorption of potassium and calcium in Chinese cabbage. There was interaction between calcium and potassium. Appropriate amount of calcium absorption of cabbage to promote potassium production, excessive calcium is inhibited. Calcium, potassium dosage respectively 0.33,0.67g / pot (Ca2K3 treatment) when the best, can significantly increase the accumulation of dry matter in cabbage and calcium and potassium absorption. [Conclusion] Applying a certain amount of calcium could effectively relieve sodium stress on Chinese cabbage when soil sodium level was low.