摘要
以9年生桉树人工林分为研究对象,分析了不同施肥配方对桉树(Eucalyptus robusta)人工林的材种结构及大径材出材量及出材率状况的影响。结果表明,桉树人工林大径材株数占比最高的为处理12(N肥300 g/株,P肥800 g/株,K肥200 g/株),占比为21.62%;施肥2年后,处理10(N肥140 g/株,P肥500g/株,K肥60 g/株)对大径材出材量的增加效果最为显著,达192.01%,施肥3年后,处理11(N肥230 g/株,P肥330 g/株)对大径材出材量的增加效果最为显著,达150.45%,施肥4年后,处理12对大径材出材量的增加效果最为显著,达136.57%;施肥2年后,处理12的大径材出材率最好,比对照增加211.29%,施肥3年后,处理10的大径材出材率增长最多,比对照增加183.82%,施肥4年后,处理10的大径材出材率增加最多,比对照增加118.81%;N肥和P肥对大径材出材量的增长在4年内均有显著影响,在施肥4年后,N肥和P肥对大径材出材率的增长影响显著。
Taking 9-year-old eucalyptus plantation as the research object,the effects of different fertilization formulas on wood species structure,yield and yield of large-diameter wood of Eucalyptus robusta plantation were analyzed.The results showed that the treatment 12(N fertilizer 300g/plant,P fertilizer 800 g/plant,K fertilizer 200 g/plant)with the highest proportion of large-diameter wood plants in Eucalyptus robusta plantation accounted for 21.62%of the total plants;After 2 years of fertilization,treatment 10(N fertilizer 140 g/plant,P fertilizer 500 g/plant,K fertilizer 60 g/plant)had the most significant effect on the increase of large-diameter timber yield,reaching 192.01%.After 3 years of fertilization,treatment 11(N fertilizer 230 g/plant,P fertilizer 330 g/plant)had the most significant effect on the increase of large-diameter timber yield,reaching 150.45%.After 4 years of fertilization,treatment 12had the most significant effect on the increase of large-diameter timber yield,reaching 136.57%;After 2 years of fertilization,the yield of large-diameter wood of treatment 12 was the best,with an increase of 211.29%compared with the control.After 3 years of fertilization,the yield of large-diameter wood of treatment 10 increased the most,with an increase of 183.82%compared with the control.After 4 years of fertilization,the yield of large-diameter wood of treatment 10 increased the most,with an increase of 118.81%compared with the control;N and P fertilizer had a significant effect on the growth of large-diameter wood yield within 4 years.After 4years of fertilization,N and P fertilizer had a significant effect on the growth of large-diameter wood yield.
作者
陈德洋
CHEN De-yang(Guangxi Zhuang Autonomous Region State Owned Yachang Forest Farm,Leye 533200,Guangxi,China)
出处
《湖北农业科学》
2021年第S02期335-338,361,共5页
Hubei Agricultural Sciences
作者简介
陈德洋(1980-),男,广西乐业人,工程师,主要从事森林培育研究,(电话)13977612130(电子信箱)932212367@qq.com。
