Effects of combined nitrogen and potassium application on yield and quality of pepper cultivated on organic substrate
DI Qianqian
JI Enling
ZHU Yanying
DU Qingjie
XIAO Huaijuan
WANG Jiqing
Abstract：Absrtact:In order to find out the optimal nitrogen and potassium application amount of pepper under organic substrate cultivation with peanut shell as the main raw material,the effects of different nitrogen and potassium fertilization on the growth,quality and yield of pepper were studied.The plants were subjected to different nitrogen and potassium applica-tion(a total of 9 treatments).There are three nitrogen levels(N1,0 kg·hm-2;N2,207 kg·hm-2;N3,414 kg·hm-2)and three potassium levels(K1,0 kg·hm-2;K2,405 kg·hm-2;K3,810 kg·hm-2).The results showed that the combined application of nitrogen and potassium had significant effects on the growth,quality and yield of pepper.The growth condition of pep-per was the best under the combined treatment of N2K2.Under the conditions of K2 and K3,the comprehensive score of pepper quality decreased with the increase of nitrogen fertilizer,and the yield of pepper decreased with the increase of ni-trogen fertilizer at K3 level.Considering the factors of quality and yield,the optimal fertilization amount was less than 120 kg·hm-2 for nitrogen and 525-825 kg·hm-2 for potassium under the substrate cultivation condition of peanut shell.
Keywords：Capsicum annuum L.Substrate cultivationFertilizing amountYieldQuality
Publication Date：2025-04-05
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 130-137 )