减施基肥追施钾肥对设施辣椒产量的影响

为探索追施钾肥对辣椒减肥增效的应用效果，通过设置5个施肥处理：常规施肥(CK)、80%常规施肥(T₁)、80%常规施肥+高钾水溶肥(T₂)、60%常规施肥(T₃)、60%常规施肥+高钾水溶肥(T4)，开展不同施肥方式对设施辣椒物候期、形态特征、花果特性、产量的影响研究。结果表明：与当地常规施肥相比，T₂处理在常规施肥减少20%基肥的基础上，在花期、果期有针对性地追施高钾水溶肥，可使辣椒采收期延长14d，单株结果数增加2.6个，有效实现增产9579.0kg/hm²，增产幅度达到41.0%，增效达38 316元/hm²。该施肥方式可作为辣椒减肥增效生产的参考。

Effects of Reducing Base Chemical Fertilizers and Applying Potassium Fertilizers on Pepper Yield in Greenhouse

Abstract: In order to explore the application effect of potassium fertilizer on reduction and increase efficiency of pepper, five fertilization treatments were set: conventional fertilization (CK), 80% conventional fertilization (T1), 80% conventional fertilization + high potassium water-soluble fertilizer (T2), 60% conventional fertilization (T3), 60% conventional fertilization + high potassium water-soluble fertilizer (T4), the effects of different fertilization methods on phenological period, morphological characteristics, flower or fruit characteristics and yield of pepper in greenhouse was studied. The results show that compared with the local conventional fertilization, T2 treatment which on the basis of reducing base fertilizer by 20% under conventional fertilization, the targeted application of high potassium water-soluble fertilizer at flowering and fruiting stages could prolong the harvest period for 14 days, increase the numbers of fruit per plant by 2.6, and effectively increase the yields of 9 579.0 kg/hm2 by 41.0% and increase profits of 38 316 yuan/hm2 . This fertilization method could be used as reference for feitilizer reduction and increasing efficiency of pepper planting.