钾对棉花生育及光合生理特性的影响研究进展综述

棉花作为喜钾作物,钾的缺乏已经成为限制棉花提高产量和品质的最关键的营养元素。棉花施钾能增加叶面积,提高叶绿素的含量和增强二氧化碳的同化率,也会对内源激素的含量变化产生影响。本文主要综述了钾素对棉花生长发育和光合生理特性影响的研究进展情况,并提出有待进一步解决的问题。

Research Progress on Effects of Potassium to Growth and Photosynthesis physiology in Cotton

The cotton is a plant which needs much potassium.The lack of potassium is the most important element which limits output and quality of cotton.The use of potassium can increase leaf area ,the content of the chlorophyll, can strengthen the assimilation rate of carbon dioxide, it can also influence the content of the endogenous hormonal.In this article, the aspects mentioned above were reviewed and it was pointed out that some further studies on effects caused by potassium of cotton quality should be strengthened.