石灰性土壤上钾氮营养对青椒养分吸收及光合作用的影响

Effect of Combined Nitrogen and Potassium Fertilization on Nutricnt Absorption and Photosynthetic efficiency of Green Pepper on Carbonate Cinnamon Soil

应用二次回归通用旋转组合设计的方法，通过田间试验，研究了石灰性土壤上，钾、氮配施对青椒养分吸收及光合作用的影响。结果表明：钾、氮配施后显著增加了青椒植株地上部全Ｎ，全Ｐ和全Ｋ的含量，并相对减轻了Ｋ对Ｃａ、Ｍｇ的抑制作用，增强了青椒对Ｃａ、Ｍｇ的吸收，提高了光合强度，为青椒高产优质奠定了物质基础。

To study the effects of N-K application on the nutrient absorption and photosynthetic efficiency of green pepper,a field experiment was carried out,using the method of quadratic regression current rotational combination design,on carbonate cinnamon soil.The results showed that application N and K at proper rations significantly increased the contents of total nitrogen,total phosphorus and total potassium in the upper part of green pepper and relatively decreased inhibition of potassium to calcium and magnesium and improved the photosynthetic efficiency of green peper,which provided a nutritional foundation for the high yield and high quality of green pepper.