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Effects of fertilization treatments on the growth and physiology of Korean pine cuttings
ZHANG Suyan, XIE Zixiong, CHI Yao, SHAO Jiajia, WANG Zihan, MIAO Zhen, ZHANG Peng, ZHANG Hanguo, WANG Chao
Journal of Nanjing Forestry University (Natural Sciences Edition) ›› 2026, Vol. 50 ›› Issue (3) : 161-168.
PDF(1833 KB)
PDF(1833 KB)
Effects of fertilization treatments on the growth and physiology of Korean pine cuttings
【Objective】This study examined the effects of fertilization on the growth and physiological traits of Korean pine(Pinus koraiensis)cuttings,in order to provide theoretical supports and practical guidances for managing P. koraiensis cutting orchards and enhancing cutting yield and quality.【Method】Using clonal plantlets from a P. koraiensis cutting orchard,various fertilization treatments(single and combined applications)were implemented. We analyzed the responses of cutting growth(length,diameter,bud length,bud diameter,and sprouting number)and physiological parameters(chlorophyll content,soluble sugar and soluble protein content)to different levels of nitrogen(N),phosphorus(P),potassium(K),nitrogen-phosphorus(NP),and nitrogen-phosphorus-potassium(NPK). The optimal fertilization treatment for promoting cutting growth and nutrient accumulation was comprehensively identified using principal component analysis combined with the membership function method.【Result】Fertilization significantly promoted the growth of P. koraiensis cuttings and increased their chlorophyll,soluble sugar,and soluble protein contents. Among the treatments,P1(0.1 kg of P fertilizer per plant)was most effective in promoting soluble protein accumulation. P2(0.2 kg of P fertilizer per plant)performed best in enhancing cutting length,diameter,chlorophyll content,and soluble sugar levels. P3(0.3 kg of P fertilizer per plant)achieved the highest sprouting number on the main shoot,followed by P2.【Conclusion】Fertilization effectively improved the growth and quality of P. koraiensis cuttings. The application of 0.2 kg of phosphorus fertilizer per plant yielded the most favorable results in promoting cutting growth and enhancing overall cutting quality.
Pinus koraiensis(Korean pine)clone / fertilization / orchard / cutting yield / cutting quality
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