石灰性褐土施用氮钾对青椒产量和品质的影响

为了探讨石灰性褐土上施用钾肥对青椒产量和品质的影响,采用盆栽试验研究了施钾对青椒产量及硝态氮、还原糖、蛋白及Vc含量的影响。试验结果表明:单施适量氮肥对青椒有一定的增产作用,但当氮肥用量超过0 45g/kg土时,反而导致减产。在施用氮肥的基础上配施钾肥,不仅能显著地提高青椒产量,而且能明显减少施氮对品质造成的不利影响,氮、钾之间表现出良好的交互作用。

Effects of Combined N-K Fertilizer on Yield and Quality of Green Pepper in Calcareous Cinnamon Soil

In order to study the effects of K fertilizer and combined N-K fertilizer on yield and quality of green pepper in calcareous cinnamon soil, the experiments were carried out with the results as follows:1) In the treatment with N fertilizer alone, the yield of green pepper was enhanced, however,more nitrogen fertilizer (0.45 gN/kg) decreased yield sharply;2) Combined N-K fertilizer with proper ratio significantly enhanced the yield of green pepper;3) The proper N-K fertilizer ratio is not only important for high yield, but also necessary for high quality of green pepper.